Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
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| within-host dynamics of the emergence of tomato yellow leaf curl virus recombinants. | tomato yellow leaf curl virus (tylcv) is a highly damaging begomovirus native to the middle east. tylcv has recently spread worldwide, recombining with other begomoviruses. recent analysis of mixed infections between tylcv and tomato leaf curl comoros begomovirus (tolckmv) has shown that, although natural selection preserves certain co-evolved intra-genomic interactions, numerous and diverse recombinants are produced at 120 days post-inoculation (dpi), and recombinant populations from different ... | 2013 | 23472190 |
| discovering host genes involved in the infection by the tomato yellow leaf curl virus complex and in the establishment of resistance to the virus using tobacco rattle virus-based post transcriptional gene silencing. | the development of high-throughput technologies allows for evaluating gene expression at the whole-genome level. together with proteomic and metabolomic studies, these analyses have resulted in the identification of plant genes whose function or expression is altered as a consequence of pathogen attacks. members of the tomato yellow leaf curl virus (tylcv) complex are among the most important pathogens impairing production of agricultural crops worldwide. to understand how these geminiviruses su ... | 2013 | 23524390 |
| the tomato yellow leaf curl virus resistance genes ty-1 and ty-3 are allelic and code for dfdgd-class rna-dependent rna polymerases. | tomato yellow leaf curl virus disease incited by tomato yellow leaf curl virus (tylcv) causes huge losses in tomato production worldwide and is caused by different related begomovirus species. breeding for tylcv resistance has been based on the introgression of multiple resistance genes originating from several wild tomato species. in this study we have fine-mapped the widely used solanum chilense-derived ty-1 and ty-3 genes by screening nearly 12,000 plants for recombination events and generati ... | 2013 | 23555305 |
| a plant virus manipulates the behavior of its whitefly vector to enhance its transmission efficiency and spread. | plant viruses can produce direct and plant-mediated indirect effects on their insect vectors, modifying their life cycle, fitness and behavior. viruses may benefit from such changes leading to enhanced transmission efficiency and spread. in our study, female adults of bemisia tabaci were subjected to an acquisition access period of 72 h in tomato yellow leaf curl virus (tylcv)-infected and non-infected tomato plants to obtain viruliferous and non-viruliferous whiteflies, respectively. insects th ... | 2013 | 23613872 |
| highly sensitive serological methods for detecting tomato yellow leaf curl virus in tomato plants and whiteflies. | tomato yellow leaf curl virus (tylcv) is a member of the genus begomovirus in the family geminiviridae, which causes severe losses in tomato production in tropic and subtropic regions. | 2013 | 23647724 |
| the role of bacterial chaperones in the circulative transmission of plant viruses by insect vectors. | persistent circulative transmission of plant viruses involves complex interactions between the transmitted virus and its insect vector. several studies have shown that insect vector proteins are involved in the passage and the transmission of the virus. interestingly, proteins expressed by bacterial endosymbionts that reside in the insect vector, were also shown to influence the transmission of these viruses. thus far, the transmission of two plant viruses that belong to different virus genera w ... | 2013 | 23783810 |
| peptide aptamers that bind to geminivirus replication proteins confer a resistance phenotype to tomato yellow leaf curl virus and tomato mottle virus infection in tomato. | geminiviruses constitute a large family of single-stranded dna viruses that cause serious losses in important crops worldwide. they often exist in disease complexes and have high recombination and mutation rates, allowing them to adapt rapidly to new hosts and environments. thus, an effective resistance strategy must be general in character and able to target multiple viruses. the geminivirus replication protein (rep) is a good target for broad-based disease control because it is highly conserve ... | 2013 | 23824791 |
| eugenol enhances the resistance of tomato against tomato yellow leaf curl virus. | tomato yellow leaf curl virus disease (tylcvd) causes severe to economic losses in tomato crops in china. the control of tylcvd is based primarily on the use of synthetic insecticide to control its vector whitefly (bemisia tabaci). to look for an alternative method for disease control, we investigated the effect of eugenol on controlling tylcvd. the potential of eugenol to trigger systemic acquired resistance (sar) in tomato (jiangsu 14) plants against tylcv was also investigated. | 2014 | 23852671 |
| differential effects of an exotic plant virus on its two closely related vectors. | concurrent spread of tomato yellow leaf curl virus (tylcv) with invasion of bemisia tabaci q rather than b in china suggests a more mutualistic relationship between tylcv and q than b. to assess this hypothesis, we quantified the impacts of tylcv on the performance and competitiveness of b and q in the laboratory. the results showed that relative to their non-infected counterparts feeding on cotton (a non-host for tylcv), infected b exhibited significant reductions in life-history traits, wherea ... | 2013 | 23864010 |
| virus infection of a weed increases vector attraction to and vector fitness on the weed. | weeds are important in the ecology of field crops, and when crops are harvested, weeds often become the main hosts for plant viruses and their insect vectors. few studies, however, have examined the relationships between plant viruses, vectors, and weeds. here, we investigated how infection of the weed datura stramonium l. by tomato yellow leaf curl virus (tylcv) affects the host preference and performance of the tylcv vector, bemisia tabaci (gennadius) q. the results of a choice experiment indi ... | 2013 | 23872717 |
| pcr-rflp-based typing for differentiation of tomato yellow leaf curl virus (tylcv) genotypes from infected host plants in korea. | a polymerase chain reaction (pcr) using two sets of primers designed from published tomato yellow leaf curl virus (tylcv) genomes was developed to distinguish from the tylcv-il groups. the specificity of the two sets of primers was proven by testing against control tylcv genomes and the symptomatic leaves of 34 different tomato cultivars naturally infected with tylcv in greenhouses. one set for tylcv-il strain-specific primers (tylcv-uni-f and tylcv-uni-r) amplified full-length genome fragments ... | 2013 | 23884784 |
| recruitment of the host plant heat shock protein 70 by tomato yellow leaf curl virus coat protein is required for virus infection. | a functional capsid protein (cp) is essential for host plant infection and insect transmission of tomato yellow leaf curl virus (tylcv) and other monopartite begomoviruses. we have previously shown that tylcv cp specifically interacts with the heat shock protein 70 (hsp70) of the virus insect vector, bemisia tabaci. here we demonstrate that during the development of tomato plant infection with tylcv, a significant amount of hsp70 shifts from a soluble form into insoluble aggregates. cp and hsp70 ... | 2013 | 23894631 |
| recent evolution of a novel begomovirus causing tomato leaf curl disease in the al-batinah region of oman. | for last two decades, begomoviruses (family geminiviridae) have been a major constraint for tomato production in oman, particularly in the al-batinah region, the major agricultural area of oman. farms in the al-batinah region were surveyed during january-march and november-december in 2012 and january-february in 2013. leaf samples of tomato plants showing typical leaf curl disease symptoms were collected and analyzed for begomoviruses. out of fifteen begomovirus clones sequenced, seven were sho ... | 2014 | 24052149 |
| phylogenetic relationships, recombination analysis, and genetic variability among diverse variants of tomato yellow leaf curl virus in iran and the arabian peninsula: further support for a tylcv center of diversity. | the discovery of five strains of tylcv in iran, including the most well-known and widespread, tylcv-il, spurred a detailed study of the full-length genomes of additional tylcv field isolates and an in-depth analysis of phylogenetic relationships, extent of recombination, and genetic variability of tylcv isolates within iran and throughout the arabian peninsula. phylogenetic analysis of complete genome sequences of tylcv isolates from iran and other countries revealed four monophyletic clusters c ... | 2014 | 24068582 |
| tomato yellow leaf curl virus alters the host preferences of its vector bemisia tabaci. | bemisia tabaci, the whitefly vector of tomato yellow leaf curl virus (tylcv), seriously reduces tomato production and quality. here, we report the first evidence that infection by tylcv alters the host preferences of invasive b. tabaci b (middle east-minor asia 1) and q (mediterranean genetic group), in which tylcv-free b. tabaci q preferred to settle on tylcv-infected tomato plants over healthy ones. tylcv-free b. tabaci b, however, preferred healthy tomato plants to tylcv-infected plants. in c ... | 2013 | 24096821 |
| mapping and introgression of a tomato yellow leaf curl virus tolerance gene, ty-1. | the whitefly-transmitted tomato yellow-leaf curl gemini-virus (tylcv) is a major pathogen of tomatoes. the wild tomato species lycopersicon chilense, which is resistant to the virus, was crossed to the cultivated tomato, l. esculentum. the backcross-1 selfed (bc1s1) generation was inoculated and a symptomless plant was selected. this plant was analyzed using 61 molecular markers, which span the tomato genome, to determine which l. chilense chromosome segments were introgressed. a bc2s1 populatio ... | 1994 | 24185918 |
| v2 of tomato yellow leaf curl virus can suppress methylation-mediated transcriptional gene silencing in plants. | tomato yellow leaf curl virus (tylcv) is a dna virus belonging to the genus begomovirus. tylcv replicates using double-stranded dna intermediates that can become the target of plant transcriptional gene silencing (tgs). here, we show that the v2 protein of tylcv can suppress tgs of a transcriptionally silenced green fluorescent protein (gfp) transgene in nicotiana benthamiana line 16-tgs. through bisulfite sequencing and chop-pcr, we demonstrated that the tylcv v2 can reverse gfp transgene silen ... | 2014 | 24187017 |
| molecular detection and partial characterization of tomato yellow leaf curl virus in sri lanka. | tomato yellow leaf curl virus (tylcv) is an important plant virus on one of the economically most important vegetable crops; tomato (lycopersicon esculentum mill.). this had not been molecularly detected before, in sri lanka. tylcv-gn-sl was isolated from apparently infected tomato plants using modified cetyltrimethyl ammonium bromide (ctab) method in gannoruwa. associated begomoviruses were detected using deng 541/deng 540 and av 494/ac 1048 primer pairs. tylcv was detected for the first time i ... | 2012 | 24205755 |
| comparative transcriptome profiling of a resistant vs. susceptible tomato (solanum lycopersicum) cultivar in response to infection by tomato yellow leaf curl virus. | tomato yellow leaf curl virus (tylcv) threatens tomato production worldwide by causing leaf yellowing, leaf curling, plant stunting and flower abscission. the current understanding of the host plant defense response to this virus is very limited. using whole transcriptome sequencing, we analyzed the differential gene expression in response to tylcv infection in the tylcv-resistant tomato breeding line cln2777a (r) and tylcv-susceptible tomato breeding line tmxa48-4-0 (s). the mixed inoculated sa ... | 2013 | 24260487 |
| complete genome sequence of a new begomovirus associated with yellow mosaic disease of hemidesmus indicus in india. | the complete dna a genome of a virus isolate associated with yellow mosaic disease of a medicinal plant, hemidesmus indicus, from india was cloned and sequenced. the length of dna a was 2825 nucleotides, 35 nucleotides longer than the unit genome of monopartite begomoviruses. comparison of the nucleotide sequence of dna a of the virus isolate with those of other begomoviruses showed maximum sequence identity of 69 % to dna a of ageratum yellow vein china virus (ayvcnv; aj558120) and 68 % with to ... | 2014 | 24276235 |
| facultative symbiont hamiltonella confers benefits to bemisia tabaci (hemiptera: aleyrodidae), an invasive agricultural pest worldwide. | bacterial symbionts infect most insect species, including important pests such as whitefly, bemisia tabaci (gennadius) (hemiptera: aleyrodidae), and often exert important effects on host ecology. the facultative symbiont hamiltonella is found at high frequencies in the b. tabaci med (type: mediterranean-med) in china. the prevalence of this symbiont in natural populations suggests beneficial effects of infection or manipulation of host reproduction. to date, however, no empirical studies on the ... | 2013 | 24280594 |
| identification of a disease complex involving a novel monopartite begomovirus with beta- and alphasatellites associated with okra leaf curl disease in oman. | okra leaf curl disease (olcd) is an important viral disease of okra in tropical and subtropical areas. the disease is caused by begomovirus-satellite complexes. a begomovirus and associated betasatellite and alphasatellite were identified in symptomatic okra plants from barka, in the al-batinah region of oman. analysis of the begomovirus sequences showed them to represent a new begomovirus most closely related to cotton leaf curl gezira virus (clcugev), a begomovirus of african origin. the seque ... | 2014 | 24287711 |
| lamium amplexicaule (lamiaceae): a weed reservoir for tomato yellow leaf curl virus (tylcv) in korea. | after the first identification of tomato yellow leaf curl virus (tylcv) in the southern part of korea in 2008, tylcv has rapidly spread to tomato farms in most regions of korea. from 2008 to 2010, a survey of natural weed hosts that could be reservoirs of tylcv was performed in major tomato production areas of korea. about 530 samples were collected and identified as belonging to 25 species from 11 families. pcr and southern hybridization were used to detect tylcv in samples, and replicating for ... | 2014 | 24327090 |
| a bead-based suspension array for the multiplexed detection of begomoviruses and their whitefly vectors. | bead-based suspension array systems enable simultaneous fluorescence-based identification of multiple nucleic acid targets in a single reaction. this study describes the development of a novel approach to plant virus and vector diagnostics, a multiplexed 7-plex array that comprises a hierarchical set of assays for the simultaneous detection of begomoviruses and bemisia tabaci, from both plant and whitefly samples. the multiplexed array incorporates genus, species and strain-specific assays, offe ... | 2014 | 24388931 |
| plant virus differentially alters the plant's defense response to its closely related vectors. | the whitefly, bemisia tabaci (hemiptera: aleyrodidae), is one of the most widely distributed agricultural pests. in recent years, b. tabaci q has invaded china, and q has displaced b in many areas now. in a number of regions of the world, invasion by b and/or q has been followed by outbreaks of tomato yellow leaf curl virus (tylcv). our previous study showed tylcv directly and indirectly modified the feeding behavior of b. tabaci in favor of q rather than b. | 2013 | 24391779 |
| association of an alphasatellite with tomato yellow leaf curl virus and ageratum yellow vein virus in japan is suggestive of a recent introduction. | samples were collected in 2011 from tomato plants exhibiting typical tomato leaf curl disease symptoms in the vicinity of komae, japan. pcr mediated amplification, cloning and sequencing of all begomovirus components from two plants from different fields showed the plants to be infected by tomato yellow leaf curl virus (tylcv) and ageratum yellow vein virus (ayvv). both viruses have previously been shown to be present in japan, although this is the first identification of ayvv on mainland japan; ... | 2014 | 24424499 |
| emergence and diversity of begomoviruses infecting solanaceous crops in east and southeast asia. | over the past three decades diseases caused by whitefly-transmitted geminiviruses (begomoviruses) have emerged to be important constraints to the production of solanaceous crops, particularly tomato (solanum lycopersicum) and peppers (capsicum spp.), in many tropical and subtropical regions of the world. the most studied of these is tomato yellow leaf curl virus (tylcv), which has spread to many other areas from its likely origin in the mediterranean basin region. the virus is usually associated ... | 2014 | 24440320 |
| degradation mechanisms of the tomato yellow leaf curl virus coat protein following inoculation of tomato plants by the whitefly bemisia tabaci. | tomato yellow leaf curl virus (tylcv) is a begomovirus infecting tomato cultures worldwide. tylcv is transmitted to plants by the whitefly bemisia tabaci. once in the plant, the virus is subjected to attack by the host-plant defences, which may include sequestration in aggregates, proteolysis, ubiquitination, 26s proteasome degradation and autophagy. elucidating how the virus avoids destruction will make it possible to understand infection and possibly devise countermeasures. | 2014 | 24464776 |
| female-biased symbionts and tomato yellow leaf curl virus infections in bemisia tabaci. | the female-biased infection of facultative symbionts has been found in bemisia tabaci; however, whether there are any differences in tomato yellow leaf curl virus (tylcv) and obligate symbiont infection rates between females and males is unknown. determining whether such differences exist would be very important for understanding the spread of the plant virus and of the symbionts. we compared both symbiont infection types, including obligate and facultative symbionts, and the rates of tylcv infe ... | 2014 | 24465416 |
| expression and functional characterisation of a soluble form of tomato yellow leaf curl virus coat protein. | tomato yellow leaf curl virus (tylcv), a member of the genus begomovirus within the family geminiviridae, is an important pathogen of tomato in many tropical, subtropical and temperate regions. tylcv is exclusively transmitted by the whitefly bemisia tabaci in a circulative manner. the viral coat protein (cp) has been assumed to play important roles in the entry of tylcv into the insect midgut cells. | 2014 | 24488592 |
| a review of the mechanisms and components that determine the transmission efficiency of tomato yellow leaf curl virus (geminiviridae; begomovirus) by its whitefly vector. | begomoviruses are a group of icosahedral single stranded dna viruses exclusively transmitted by the sweet potato whitefly bemisia tabaci in a persistent, circulative manner. in this mode of transmission, begomoviruses are acquired by their insect vector as intact virions from the plant phloem, move along the food canal, foregut and esophagus and reach the midgut where they are absorbed into the hemolymph via the filter chamber. the filter chamber is the site where most of the ingested food is fi ... | 2014 | 24508344 |
| molecular variability and evolution of a natural population of tomato yellow leaf curl virus in shanghai, china. | tomato yellow leaf curl virus (tylcv), belonging to the genus begomovirus of the family geminiviridae, is emerging as the most destructive pathogen of tomato plants. since the first report of tylcv in shanghai, china in 2006, tylcv has spread rapidly to 13 provinces or autonomous regions of china. in this study, the molecular variability and evolution of tylcv were monitored in shanghai from its first upsurge in 2006 until 2010. full-length genomic sequences of 26 isolates were obtained by rolli ... | 2014 | 24510706 |
| frequency-dependent assistance as a way out of competitive exclusion between two strains of an emerging virus. | biological invasions are the main causes of emerging viral diseases and they favour the co-occurrence of multiple species or strains in the same environment. depending on the nature of the interaction, co-occurrence can lead to competitive exclusion or coexistence. the successive fortuitous introductions of two strains of tomato yellow leaf curl virus (tylcv-mld and tylcv-il) in réunion island provided an ideal opportunity to study the invasion of, and competition between, these worldwide emergi ... | 2014 | 24598426 |
| implication of the bacterial endosymbiont rickettsia spp. in interactions of the whitefly bemisia tabaci with tomato yellow leaf curl virus. | numerous animal and plant viruses are transmitted by arthropod vectors in a persistent, circulative manner. tomato yellow leaf curl virus (tylcv) is transmitted by the sweet potato whitefly bemisia tabaci. we report here that infection with rickettsia spp., a facultative endosymbiont of whiteflies, altered tylcv-b. tabaci interactions. a b. tabaci strain infected with rickettsia acquired more tylcv from infected plants, retained the virus longer, and exhibited nearly double the transmission effi ... | 2014 | 24600010 |
| location of symbionts in the whitefly bemisia tabaci affects their densities during host development and environmental stress. | bacterial symbionts often enhance the physiological capabilities of their arthropod hosts and enable their hosts to expand into formerly unavailable niches, thus leading to biological diversification. many arthropods, including the worldwide invasive whitefly bemisia tabaci, have individuals simultaneously infected with symbionts of multiple genera that occur in different locations in the host. this study examined the population dynamics of symbionts that are located in different areas within b. ... | 2014 | 24632746 |
| histochemical visualization of ros and antioxidant response to viral infections of vegetable crops grown in azerbaijan. | extremes of environmental conditions, such as biotic stresses, strongly affect plant growth and development and may adversely affect photosynthetic process. virus infection is especially problematic in crops, because unlike other diseases, its impact cannot be reduced by phytosanitary treatments. the vegetable crops (solanum lycopеrsicum l, cucurbita melo l., cucumis sativus l., piper longum l., solánum melongéna l., vicia faba l.) showing virus-like symptoms were collected from fields located i ... | 2014 | 24661407 |
| rapid spread of a recently introduced virus (tomato yellow leaf curl virus) and its vector bemisia tabaci (hemiptera: aleyrodidae) in liaoning province, china. | in liaoning province, china, tomato yellow leaf curl virus (tylcv) was first detected in 2009 and in only four counties. to quantify the spread of tylcv and to identify potential factors influencing its spread in liaoning province, we assayed for tylcv within 1,055 whiteflies (bemisia tabaci (gennadius) complex) from 74 populations and 29 counties in 2011. the b. tabaci species of these individuals was determined based on molecular markers. tylcv was found in 13 counties (donggang, liaoyang, kaz ... | 2014 | 24665690 |
| only minimal regions of tomato yellow leaf curl virus (tylcv) are required for replication, expression and movement. | the il-60 platform, consisting of a disarmed form of tomato yellow leaf curl virus (tylcv) and auxiliary components, was previously developed as a nontransgenic universal vector system for gene expression and silencing that can express an entire operon in plants. il-60 does not allow rolling-circle replication; hence, production of viral single-stranded (ss) dna progeny is prevented. we used this double-stranded (ds) dna-restricted platform (uncoupled from the dsdna→ssdna replication phase of pr ... | 2014 | 24719195 |
| sweet pepper confirmed as a reservoir host for tomato yellow leaf curl virus by both agro-inoculation and whitefly-mediated inoculation. | tomato yellow leaf curl virus (tylcv), a member of the genus begomovirus, has a single-stranded dna genome. tylcv can induce severe disease symptoms on tomato plants, but other hosts plants such as cucurbits and peppers are asymptomatic. a full-length dna clone of a korean tylcv isolate was constructed by rolling-circle amplification from tylcv-infected tomatoes in korea. to assess relative susceptibility of sweet pepper varieties to tylcv, 19 cultivars were inoculated with cloned tylcv by agro- ... | 2014 | 24777825 |
| upregulation of probing- and feeding-related behavioural frequencies in bemisia tabaci upon acquisition of tomato yellow leaf curl virus. | the behaviour of insect vectors can be altered by the acquisition of plant viruses. bemisia tabaci, which is the vector of tomato yellow leaf curl virus (tylcv), causes damage to susceptible tomato cultivars. here, the frequencies of several behavioural characteristics related to probing and feeding that are exhibited by non-viruliferous (nv) and tylcv-viruliferous (v) adult b. tabaci were compared using a sandwich-type parafilm cage. | 2014 | 24831051 |
| molecular characterization of a naturally occurring intraspecific recombinant begomovirus with close relatives widespread in southern arabia. | tomato leaf curl sudan virus (tolcsdv) is a single-stranded dna begomovirus of tomato that causes downward leaf curl, yellowing, and stunting. leaf curl disease results in significant yield reduction in tomato crops in the nile basin. tolcsdv symptoms resemble those caused by tomato yellow leaf curl virus, a distinct and widespread begomovirus originating in the middle east. in this study, tomato samples exhibiting leaf curl symptoms were collected from gezira, sudan. the associated viral genome ... | 2014 | 24890736 |
| bemisia tabaci q carrying tomato yellow leaf curl virus strongly suppresses host plant defenses. | the concurrence of tomato yellow leaf curl virus (tylcv) with the spread of its vector bemisia tabaci q rather than b in china suggests a more mutualistic relationship between tylcv and q. here, we investigated the hypothesis that viruliferous b and q have different effects on plant defenses. we found the fecundity of nonviruliferous b, nonviruliferous q, viruliferous q and viruliferous b was 11.080, 12.060, 10.760, and 11.220 respectively on plants previously attacked by the other biotype, howe ... | 2014 | 24912756 |
| genetic diversity, host range, and distribution of tomato yellow leaf curl virus in iran. | tomato yellow leaf curl virus (tylcv) is considered one of the most important tomato pathogens in tropical and subtropical regions including iran. during the years 2007 to 2009, a total number of 510 symptomatic and asymptomatic vegetable, ornamental and weed samples were collected from fields and greenhouses in ten provinces of iran. symptoms included stunting, yellowing, leaf curl and flower senescence. pcr with specific primers showed tylcv infection in 184 samples (36%) such as cucumber, pep ... | 2014 | 24957717 |
| differential identification of three species of curtovirus using loop-mediated isothermal amplification. | rapid and sensitive detection methods for three species of curtovirus were developed using a loop-mediated isothermal amplification (lamp) technique. a universal primer set for detecting the three main species of curtovirus at the same time, and three kinds of species-specific primer sets were designed and used for lamp reactions. results from the lamp reactions were visualized both by color changes after adding sybr green i staining dye and by dna laddering on agarose gel electrophoresis. the o ... | 2014 | 24957721 |
| water balance, hormone homeostasis, and sugar signaling are all involved in tomato resistance to tomato yellow leaf curl virus. | vacuolar water movement is largely controlled by membrane channels called tonoplast-intrinsic aquaporins (tip-aqps). some tip-aqp genes, such as tip2;2 and tip1;1, are up-regulated upon exposure to biotic stress. moreover, tip1;1 transcript levels are higher in leaves of a tomato (solanum lycopersicum) line resistant to tomato yellow leaf curl virus (tylcv) than in those of a susceptible line with a similar genetic background. virus-induced silencing of tip1;1 in the tomato resistant line and th ... | 2014 | 24989233 |
| three-way interactions between the tomato plant, tomato yellow leaf curl virus, and bemisia tabaci (hemiptera: aleyrodidae) facilitate virus spread. | plant defense responses can greatly affect plant viruses and their herbivore vectors. the current article reports on plant defense responses involving jasmonic acid (ja), salicylic acid (sa), and proteinase inhibitor (pi) in the three-way interaction between tomato plants, tomato yellow leaf curl virus, and the whitefly bemisia tabaci (gennadius) (hemiptera: aleyrodidae). the results showed that feeding by viruliferous b. tabaci increases the longevity and fecundity of nonviruliferous b. tabaci ... | 2014 | 25026648 |
| fine mapping of the tomato yellow leaf curl virus resistance gene ty-2 on chromosome 11 of tomato. | resistances to begomoviruses, including bipartite tomato mottle virus and monopartite tomato yellow leaf curl virus (tylcv), have been introgressed to cultivated tomato (solanum lycopersicum) from wild tomato accessions. a major gene, ty-2 from s. habrochaites f. glabratum accession "b6013," that confers resistance to tylcv was previously mapped to a 19-cm region on the long arm of chromosome 11. in the present study, approximately 11,000 plants were screened and nearly 157 recombination events ... | 2014 | 25076841 |
| effects of plant virus and its insect vector on encarsia formosa, a biocontrol agent of whiteflies. | in this study, we investigated the tritrophic interactions among a persistently transmitted plant virus, tomato yellow leaf curl virus (tylcv), its insect vector, the sweetpotato whitefly bemisia tabaci, and a parasitoid, encarsia formosa gahan, one of the most extensively used biological control agents. as an emerging invasive pest worldwide, the two most damaging whiteflies are b. tabaci b and q cryptic species. on healthy tomato plants, parasitoid-induced mortality was significantly higher in ... | 2014 | 25096549 |
| tomato yellow leaf curl virus resistance by ty-1 involves increased cytosine methylation of viral genomes and is compromised by cucumber mosaic virus infection. | tomato yellow leaf curl virus (tylcv) and related begomoviruses are a major threat to tomato production worldwide and, to protect against these viruses, resistance genes from different wild tomato species are introgressed. recently, the ty-1 resistance gene was identified, shown to code for an rna-dependent rna polymerase and to be allelic with ty-3. here we show that upon tylcv challenging of resistant lines carrying ty-1 or ty-3, low virus titers were detected concomitant with the production o ... | 2014 | 25136118 |
| specific cells in the primary salivary glands of the whitefly bemisia tabaci control retention and transmission of begomoviruses. | the majority of plant viruses are vectored by arthropods via persistent-circulative or noncirculative transmission. previous studies have shown that specific binding sites for noncirculative viruses reside within the stylet or foregut of insect vectors, whereas the transmission mechanisms of circulative viruses remain ambiguous. here we report the critical roles of whitefly primary salivary glands (psgs) in the circulative transmission of two begomoviruses. the middle east asia minor 1 (meam1) s ... | 2014 | 25210181 |
| a sensitive method for the quantification of virion-sense and complementary-sense dna strands of circular single-stranded dna viruses. | circular single-stranded dna (ssdna) viruses are the smallest viruses known to infect eukaryotes. high recombination and mutation rates have conferred these viruses with an evolutionary potential that has facilitated their emergence. their damaging effects on livestock (circoviruses) and crops (geminiviruses and nanoviruses), and the ubiquity of anelloviruses in human populations and other mammalian species, have resulted in increased interest in better understanding their epidemiology and infec ... | 2014 | 25241765 |
| a rapid and efficient method for construction of an infectious clone of tomato yellow leaf curl virus. | tomato yellow leaf curl virus (tylcv), a member of the genus begomovirus, is responsible for one of the most devastating viral diseases in tomato-growing countries and is becoming a serious problem in many subtropical and tropical countries. the climate in korea is getting warmer and developing subtropical features in response to global warming. these changes are being accompanied by tylcv, which is now becoming a large problem in the korean tomato industry. the most effective way to reduce dama ... | 2014 | 25289018 |
| quantification and localization of watermelon chlorotic stunt virus and tomato yellow leaf curl virus (geminiviridae) in populations of bemisia tabaci (hemiptera, aleyrodidae) with differential virus transmission characteristics. | bemisia tabaci (gennadius) is one of the economically most damaging insects to crops in tropical and subtropical regions. severe damage is caused by feeding and more seriously by transmitting viruses. those of the genus begomovirus (geminiviridae) cause the most significant crop diseases and are transmitted by b. tabaci in a persistent circulative mode, a process which is largely unknown. to analyze the translocation and to identify critical determinants for transmission, two populations of b. t ... | 2014 | 25365330 |
| new insecticides for management of tomato yellow leaf curl, a virus vectored by the silverleaf whitefly, bemisia tabaci. | greenhouse studies using a randomized complete block design were carried out to evaluate the effect of six insecticides on transmission of tomato yellow leaf curl virus (tylcv) by the silverleaf whitefly, bemisia tabaci biotype b gennadius (hemiptera: aleyrodidae) to tomato, lycopersicon esculentum (miller) (solanales: solanaceae), seedlings that were inoculated with whiteflies from a tylcv colony in cages 3, 7, or 14 d after treatment with insecticide. the purpose was to reveal differences in r ... | 2014 | 25368089 |
| management of whitefly-transmitted viruses in open-field production systems. | whiteflies are a key pest of crops in open-field production throughout the tropics and subtropics. this is due in large part to the long and diverse list of devastating plant viruses transmitted by these vectors. open-field production provides many challenges to manage these viruses and in many cases adequate management has not been possible. diseases caused by whitefly-transmitted viruses have become limiting factors in open-field production of a wide range of crops, i.e., bean golden mosaic di ... | 2014 | 25410102 |
| tylcv-is movement in planta does not require v2 protein. | tomato yellow leaf curl virus (tylcv), a major tomato pathogen causing extensive crop losses, is a whitefly-transmitted geminivirus. v2 mutants of tylcv-is and related viruses tend to induce symptomless infection with attenuated viral dna levels, while accumulating close to wild-type dna levels in protoplasts, suggesting v2 as a movement protein. the discovery of plant-silencing mechanisms and viral silencing suppressors, v2 included, led us to reconsider v2׳s involvement in viral movement. we s ... | 2015 | 25644513 |
| genome-wide analysis of bhlh transcription factor and involvement in the infection by yellow leaf curl virus in tomato (solanum lycopersicum). | the basic helix-loop-helix (bhlh) proteins are a superfamily of transcription factors that can bind to specific dna target sites. they have been well characterized in model plants such as arabidopsis and rice and have been shown to be important regulatory components in many different biological processes. however, no systemic analysis of the bhlh transcription factor family has yet been reported in tomatoes. tomato yellow leaf curl virus (tylcv) threatens tomato production worldwide by causing l ... | 2015 | 25652024 |
| assessment of the genetic diversity of tomato yellow leaf curl virus. | the objective of the present study was to analyze the genetic diversity of tomato yellow leaf curl virus (tylcv). representative tylcv sequences were searched in the national center for biotechnology information database. comprehensive analysis of tylcv was performed using bioinformatics by examining gene structure, sequence alignments, phylogeny, gc content, and homology. forty-eight representative tylcv sequences were selected from 48 regions in 29 countries. the results showed that all tylcv ... | 2015 | 25729988 |
| the tomato yellow leaf curl virus (tylcv) v2 protein inhibits enzymatic activity of the host papain-like cysteine protease cyp1. | the viral v2 protein is one of the key factors that tomato yellow leaf curl geminivirus (tylcv), a major tomato pathogen worldwide, utilizes to combat the host defense. besides suppressing the plant rna silencing defense by targeting the host sgs3 component of the silencing machinery, v2 also interacts with the host cyp1 protein, a papain-like cysteine protease likely involved in hypersensitive response reactions. the biological effects of the v2-cyp1 interaction, however, remain unknown. we add ... | 2015 | 25797621 |
| rna interference-based resistance in transgenic tomato plants against tomato yellow leaf curl virus-oman (tylcv-om) and its associated betasatellite. | tomato yellow leaf curl virus (tylcv), a monopartite begomovirus (family geminiviridae) is responsible for heavy yield losses for tomato production around the globe. in oman at least five distinct begomoviruses cause disease in tomato, including tylcv. unusually, tylcv infections in oman are sometimes associated with a betasatellite (tomato leaf curl betasatellite [tolcb]; a symptom modulating satellite). rna interference (rnai) can be used to develop resistance against begomoviruses at either t ... | 2015 | 25890080 |
| the tomato yellow leaf curl virus v2 protein forms aggregates depending on the cytoskeleton integrity and binds viral genomic dna. | the spread of tomato yellow leaf curl virus (tylcv) was accompanied by the formation of coat protein (cp) aggregates of increasing size in the cytoplasm and nucleus of infected tomato (solanum lycopersicum) cells. in order to better understand the tylcv-host interaction, we investigated the properties and the subcellular accumulation pattern of the non-structural viral protein v2. cp and v2 are the only sense-oriented genes on the virus circular single-stranded dna genome. similar to cp, v2 loca ... | 2015 | 25940862 |
| first complete genomic characterization and phylogeny of a new recombinant of tomato yellow leaf curl virus (genus begomovirus, family geminiviridae) from kuwait. | while whitefly-transmitted begomoviruses are economically important constraints to tomato production in kuwait, little is known about genomic features of these viruses from kuwait. a begomovirus isolated from severely diseased tomatoes, collected over a two-year period in the main tomato-growing areas of kuwait, was characterized at the molecular level. the complete genomic sequence of the begomovirus was determined, and phlylogeographic studies were conducted to better understand genetic divers ... | 2015 | 25951968 |
| tomato plant cell death induced by inhibition of hsp90 is alleviated by tomato yellow leaf curl virus infection. | to ensure a successful long-term infection cycle, begomoviruses must restrain their destructive effect on host cells and prevent drastic plant responses, at least in the early stages of infection. the monopartite begomovirus tomato yellow leaf curl virus (tylcv) does not induce a hypersensitive response and cell death on whitefly-mediated infection of virus-susceptible tomato plants until diseased tomatoes become senescent. the way in which begomoviruses evade plant defences and interfere with c ... | 2016 | 25962748 |
| recessive resistance derived from tomato cv. tyking-limits drastically the spread of tomato yellow leaf curl virus. | the tomato yellow leaf curl disease (tylcd) causes severe damage to tomato (solanum lycopersicum l.) crops throughout tropical and subtropical regions of the world. tylcd is associated with a complex of single-stranded circular dna plant viruses of the genus begomovirus (family geminiviridae) transmitted by the whitefy bemisia tabaci gennadius (hemiptera: aleyrodidae). the tomato inbred line tx 468-rg is a source of monogenic recessive resistance to begomoviruses derived from the hybrid cv. tyki ... | 2015 | 26008699 |
| transmission of tomato yellow leaf curl virus by bemisia tabaci as affected by whitefly sex and biotype. | bemisia tabaci is a serious pest of vegetables and other crops worldwide. the most damaging and predominant b. tabaci biotypes are b and q, and both are vectors of tomato yellow leaf curl virus (tylcv). previous research has shown that q outperforms b in many respects but comparative research is lacking on the ability of b and q to transmit viruses. in the present study, we tested the hypothesis that b and q differ in their ability to transmit tylcv and that this difference helps explain tylcv o ... | 2015 | 26021483 |
| assessing the genetic variation of ty-1 and ty-3 alleles conferring resistance to tomato yellow leaf curl virus in a broad tomato germplasm. | tomato yellow leaf curl virus (tylcv) hampers tomato production worldwide. our previous studies have focussed on mapping and ultimately cloning of the tylcv resistance genes ty-1 and ty-3. both genes are derived from solanum chilense and were shown to be allelic. they code for an rna-dependent rna polymerase (rdr) belonging to the rdrγ type defined by a dfdgd catalytic domain. in this study, we first fine-mapped the tylcv resistance in s. chilense la1932, la1960 and la1971. results showed that c ... | 2017 | 26028987 |
| synthesis and biological activity evaluation of novel amino acid derivatives as potential elicitors against tomato yellow leaf curl virus. | disease caused by tomato yellow leaf curl virus (tylcv) brings serious production losses of cultivated tomato worldwide. in our previous study, two novel amino acid derivatives exerted satisfactory antiviral activities against tylcv. in this study, the variation of tylcv, the transcriptional expression level of ty-1 and the enzyme activities of pod and ppo in tomato were monitored after treatment with two amino acid derivatives to illustrate the antiviral mechanism. the results showed the sympto ... | 2015 | 26162434 |
| replication of tomato yellow leaf curl virus in its whitefly vector, bemisia tabaci. | tomato yellow leaf curl virus (tylcv) is a begomovirus transmitted exclusively by the whitefly bemisia tabaci in a persistent, circulative manner. replication of tylcv in its vector remains controversial, and thus far, the virus has been considered to be nonpropagative. following 8 h of acquisition on tylcv-infected tomato plants or purified virions and then transfer to non-tylcv-host cotton plants, the amounts of virus inside whitefly adults significantly increased (>2-fold) during the first fe ... | 2015 | 26178995 |
| in silico analysis of gene content in tomato genomic regions mapped to the ty-2 resistance gene. | tomato yellow leaf curl virus is one of the main diseases affecting tomato production worldwide. previous studies have shown that ty-2 is an important resistance gene located between molecular markers c2_at2g28250 (82.3 cm) and t0302 (89.0 cm), and exhibits strong resistance to tomato yellow leaf curl virus in asia. in this study, ty-2 candidate genes were subjected to bioinformatic analysis for the sequenced tomato genome. we identified 69 genes between molecular markers c2_at2g28250 and t0302, ... | 2015 | 26214476 |
| immunity to tomato yellow leaf curl virus in transgenic tomato is associated with accumulation of transgene small rna. | gene silencing is a natural defense response of plants against invading rna and dna viruses. the rna post-transcriptional silencing system has been commonly utilized to generate transgenic crop plants that are "immune" to plant virus infection. here, we applied this approach against the devastating dna virus tomato yellow leaf curl virus (tylcv) in its host tomato (solanum lycopersicum l.). to generate broad resistance to a number of different tylcv viruses, three conserved sequences (the interg ... | 2015 | 26255053 |
| evaluating weeds as hosts of tomato yellow leaf curl virus. | bemisia tabaci (gennadius) biotype b transmits tomato yellow leaf curl virus (tylcv), which affects tomato production globally. prompt destruction of virus reservoirs is a key component of virus management. identification of weed hosts of tylcv will be useful for reducing such reservoirs. the status of weeds as alternate hosts of tylcv in florida remains unclear. in greenhouse studies, b. tabaci adults from a colony reared on tylcv-infected tomato were established in cages containing one of four ... | 2015 | 26314055 |
| tomato yellow leaf curl virus differentially influences plant defence responses to a vector and a non-vector herbivore. | plants frequently engage in simultaneous interactions with diverse classes of biotic antagonists. differential induction of plant defence pathways by these antagonists, and interactions between pathways, can have important ecological implications; however, these effects are currently not well understood. we explored how tomato yellow leaf curl virus (tylcv) influenced the performance of its vector (bemisia tabaci) and a non-vector herbivore (tetranychus urticae) occurring separately or together ... | 2016 | 26436779 |
| a novel route controlling begomovirus resistance by the messenger rna surveillance factor pelota. | tomato yellow leaf curl virus (tylcv) is a devastating disease of tomato (solanum lycopersicum) that can be effectively controlled by the deployment of resistant cultivars. the tylcv-resistant line ty172 carries a major recessive locus for tylcv resistance, designated ty-5, on chromosome 4. in this study, the association between 27 polymorphic dna markers, spanning the ty-5 locus, and the resistance characteristics of individual plants inoculated with tylcv in 51 segregating recombinant populati ... | 2015 | 26448569 |
| manipulation of host quality and defense by a plant virus improves performance of whitefly vectors. | pathogen-mediated interactions between insect vectors and their host plants can affect herbivore fitness and the epidemiology of plant diseases. while the role of plant quality and defense in mediating these tripartite interactions has been recognized, there are many ecologically and economically important cases where the nature of the interaction has yet to be characterized. the bemisia tabaci (gennadius) cryptic species mediterranean (med) is an important vector of tomato yellow leaf curl viru ... | 2015 | 26470098 |
| effectiveness of cyantraniliprole for managing bemisia tabaci (hemiptera: aleyrodidae) and interfering with transmission of tomato yellow leaf curl virus on tomato. | cyantraniliprole is the second xylem-systemic active ingredient in the new anthranilic diamide class. greenhouse (2006), growth chamber (2007), and field studies (2009-2010) were conducted to determine the efficacy of cyantraniliprole for managing bemisia tabaci (gennadius) biotype b and in interfering with transmission of tomato yellow leaf curl virus (tylcv) by this whitefly. cyantraniliprole applied as soil treatments (200 sc) or foliar sprays (100 od) provided excellent adult whitefly contro ... | 2015 | 26470209 |
| monitoring the dynamics of emergence of a non-canonical recombinant of tomato yellow leaf curl virus and displacement of its parental viruses in tomato. | recombinant viruses are increasingly being reported but the dynamics of their emergence is rarely documented. a new recombinant tomato yellow leaf curl virus (tylcv-is76) was detected for the first time in 2010 in southern morocco (souss). an original diagnostic tool was needed to fit its unusual recombination profile. although is76 was detected following the appearance of tylc symptoms on tolerant tomato plants, symptoms could not be associated to is76 or to a synergy with criniviruses. accordi ... | 2015 | 26519598 |
| temporal effects of a begomovirus infection and host plant resistance on the preference and development of an insect vector, bemisia tabaci, and implications for epidemics. | persistent plant viruses, by altering phenotypic and physiological traits of their hosts, could modulate the host preference and fitness of hemipteran vectors. a majority of such modulations increase vector preference for virus-infected plants and improve vector fitness, ultimately favouring virus spread. nevertheless, it remains unclear how these virus-induced modulations on vectors vary temporally, and whether host resistance to the pathogen influences such effects. this study addressed the tw ... | 2015 | 26529402 |
| insecticides promote viral outbreaks by altering herbivore competition. | while the management of biological invasions is often characterized by a series of single-specieg decisions, invasive species exist within larger food webs. these biotic interactions can alter the impact of control/eradication programs and may cause suppression efforts to inadvertently facilitate invasion spread and impact. we document the rapid replacement of the invasive bemisia middle east-asia minor i (meam1) cryptic biotype by the cryptic mediterranean (med) biotype throughout china and dem ... | 2015 | 26552266 |
| crispr/cas9-mediated viral interference in plants. | the crispr/cas9 system provides bacteria and archaea with molecular immunity against invading phages and conjugative plasmids. recently, crispr/cas9 has been used for targeted genome editing in diverse eukaryotic species. | 2015 | 26556628 |
| rapid accumulation and low degradation: key parameters of tomato yellow leaf curl virus persistence in its insect vector bemisia tabaci. | of worldwide economic importance, tomato yellow leaf curl virus (tylcv, begomovirus) is responsible for one of the most devastating plant diseases in warm and temperate regions. the dna begomoviruses (geminiviridae) are transmitted by the whitefly species complex bemisia tabaci. although geminiviruses have long been described as circulative non-propagative viruses, observations such as long persistence of tylcv in b. tabaci raised the question of their possible replication in the vector. we moni ... | 2015 | 26625871 |
| tomato yellow leaf curl virus confronts host degradation by sheltering in small/midsized protein aggregates. | tomato yellow leaf curl virus (tylcv) is a begomovirus transmitted by the whitefly bemisia tabaci to tomato and other crops. tylcv proteins are endangered by the host defenses. we have analyzed the capacity of the tomato plant and of the whitefly insect vector to degrade the six proteins encoded by the tylcv genome. tomato and whitefly demonstrated the highest proteolytic activity in the fractions containing soluble proteins, less-in large protein aggregates; a significant decrease of tylcv prot ... | 2016 | 26654789 |
| genome-wide analysis of tomato long non-coding rnas and identification as endogenous target mimic for microrna in response to tylcv infection. | recently, a large number of long noncoding rnas (lncrnas) have emerged as important regulators of many biological processes in animals and plants. however, how lncrnas function during plant dna virus infection is largely unknown. we performed strand-specific paired-end rna sequencing of tomato samples infected with tomato yellow leaf curl virus (tylcv) with three biological replicates. overall, we predicted 1565 lncrnas including long intergenic ncrnas (lincrnas) and natural antisense transcript ... | 2015 | 26679690 |
| field trial and molecular characterization of rnai-transgenic tomato plants that exhibit resistance to tomato yellow leaf curl geminivirus. | rna interference (rnai) is a widely used approach to generate virus-resistant transgenic crops. however, issues of agricultural importance like the long-term durability of rnai-mediated resistance under field conditions and the potential side effects provoked in the plant by the stable rnai expression remain poorly investigated. here, we performed field trials and molecular characterization studies of two homozygous transgenic tomato lines, with different selection markers, expressing an intron- ... | 2016 | 26713353 |
| tomato yellow leaf curl virus (tylcv-il): a seed-transmissible geminivirus in tomatoes. | tomato yellow leaf curl virus (tylcv) is one of the most well-known tomato-infecting begomoviruses and transmitted by bemisia tabaci. seed transmission has previously been reported for some rna viruses, but tylcv has not previously been described as a seed-borne virus. in 2013 and 2014, without whitefly-mediated transmission, tylcv was detected in young tomato plants germinated from fallen fruits produced from tylcv-infected tomato plants in the previous cultivation season. in addition, tylcv-is ... | 2016 | 26743765 |
| eugenol confers resistance to tomato yellow leaf curl virus (tylcv) by regulating the expression of slper1 in tomato plants. | tomato yellow leaf curl virus (tylcv) is one of the most devastating plant diseases, and poses a significant agricultural concern because of the lack of an efficient control method. eugenol is a plant-derived natural compound that has been widely used as a food additive and in medicine. in the present study, we demonstrated the potential of eugenol to enhance the resistance of tomato plants to tylcv. the anti-tylcv efficiency of eugenol was significantly higher than that of moroxydine hydrochlor ... | 2016 | 26776605 |
| tomato yellow leaf curl virus infection mitigates the heat stress response of plants grown at high temperatures. | cultured tomatoes are often exposed to a combination of extreme heat and infection with tomato yellow leaf curl virus (tylcv). this stress combination leads to intense disease symptoms and yield losses. the response of tylcv-susceptible and resistant tomatoes to heat stress together with viral infection was compared. the plant heat-stress response was undermined in tylcv infected plants. the decline correlated with the down-regulation of heat shock transcription factors (hsfs) hsfa2 and hsfb1, a ... | 2016 | 26792235 |
| the c2 protein of tomato yellow leaf curl sardinia virus acts as a pathogenicity determinant and a 16-amino acid domain is responsible for inducing a hypersensitive response in plants. | the role of the c2 protein in the pathogenicity of tomato yellow leaf curl sardinia virus (tylcsv) was investigated. here we report that agrobacterium-mediated transient expression of tylcsv c2 resulted in a strong hypersensitive response (hr) in nicotiana benthamiana, n. tabacum, and arabidopsis thaliana, with induction of plant cell death and production of h2o2. since hr is not evident in plants infected by tylcsv, it is expected that tylcsv encodes a gene (or genes) that counters this respons ... | 2016 | 26826600 |
| the role of corchorus in spreading of tomato yellow leaf curl virus on tomato in jeddah, saudi arabia. | corchorus (corchorus capsularis l. and corchorus olitorius l.) is one of the most important fiber crops grown in tropical and subtropical regions throughout the world. field survey was conducted and naturally infected leaf samples were collected from corchorus and tomato plants in jeddah, saudi arabia. the causal virus was transmitted by whiteflies to tomato plants and begomovirus infection was confirmed by polymerase chain reaction. the complete viral genome and associated betasatellites were a ... | 2016 | 26925440 |
| evaluation of recombinase polymerase amplification for detection of begomoviruses by plant diagnostic clinics. | plant viruses in the genus begomovirus, family geminiviridae often cause substantial crop losses. these viruses have been emerging in many locations throughout the tropics and subtropics. like many plant viruses, they are often not recognized by plant diagnostic clinics due in large part to the lack of rapid and cost effective assays. an isothermal amplification assay, recombinase polymerase amplification (rpa), was evaluated for its ability to detect three begomoviruses and for its suitability ... | 2016 | 27000806 |
| effects of host plant factors on the bacterial communities associated with two whitefly sibling species. | although discrepancy in the specific traits and ecological characteristics of bemisia tabaci between species are partially attributed to the b. tabaci-associated bacteria, the factors that affect the diversity of b. tabaci-associated bacteria are not well-understood. we used the metagenomic approach to characterize the b. tabaci-associated bacterial community because the approach is an effective tool to identify the bacteria. | 2016 | 27008327 |
| cotton leaf curl multan betasatellite dna as a tool to deliver and express the human b-cell lymphoma 2 (bcl-2) gene in plants. | the betasatellite dna associated with cotton leaf curl multan virus (clcumb) contains a single complementary-sense orf, βc1, which is a pathogenicity determinant. clcumb was able to replicate in plants in the presence of diverse helper geminiviruses, including tomato leaf curl virus-australia (tlcv-au), iranian isolate of tomato yellow leaf curl virus (tylcv-[ab]), and beet curly top virus (bctv-svr), and can be used as a plant gene delivery vector. to test the hypothesis that clcumb has the pot ... | 2016 | 27041273 |
| corrigendum: tomato yellow leaf curl virus infection mitigates the heat stress response of plants grown at high temperatures. | 2016 | 27166264 | |
| tomato yellow leaf curl virus benefits population growth of the q biotype of bemisia tabaci (gennadius) (hemiptera: aleyrodidae). | plant viruses can directly influence their insect vectors, and indirectly through their shared host plant, altering their behavior and performance in a mutualistic or rather antagonistic manner. one of the most studied begomovirus, tomato yellow leaf curl virus (tylcv), may also facilitate the expansion of its vector, the whitefly bemisia tabaci (gennadius). considering the likely expansion of the disease and its major vector, we studied the direct and the indirect effects of a mediterranean iso ... | 2014 | 27193818 |
| analysis of the mild strain of tomato yellow leaf curl virus, which overcomes ty-2 gene-mediated resistance in tomato line h24. | in tomato line h24, an isolate of the mild (mld) strain of tomato yellow leaf curl virus (tylcv-mld [jr:kis]) overcomes ty-2 gene-mediated resistance and causes typical symptoms of tomato yellow leaf curl disease (tylcd). no systemic infection with visible symptoms or accumulation of viral dna in the upper leaves was observed in h24 challenged with another isolate, tylcv-il (tylcv-il [jr:osaka]), confirming that h24 is resistant to the il strain. to elucidate the genomic regions that cause the b ... | 2016 | 27231006 |
| natural occurrence of tomato leaf curl new delhi virus in iranian cucurbit crops. | the main areas for field-grown vegetable production in iran were surveyed during the years of 2012-2014 to determine the occurrence of begomoviruses infecting these crops. a total of 787 leaf samples were collected from vegetables and some other host plants showing virus-like symptoms and tested by an enzyme-linked immunosorbent assay (elisa) using polyclonal antibodies produced against tomato yellow leaf curl virus (tylcv). according to the elisa results, 81 samples (10.3%) positively reacted w ... | 2016 | 27298595 |
| the autophagy pathway participates in resistance to tomato yellow leaf curl virus infection in whiteflies. | macroautophagy/autophagy plays an important role against pathogen infection in mammals and plants. however, little has been known about the role of autophagy in the interactions of insect vectors with the plant viruses, which they transmit. begomoviruses are a group of single-stranded dna viruses and are exclusively transmitted by the whitefly bemisia tabaci in a circulative manner. in this study, we found that the infection of a begomovirus, tomato yellow leaf curl virus (tylcv) could activate ... | 2016 | 27310765 |
| association of tomato leaf curl sudan virus with leaf curl disease of tomato in jeddah, saudi arabia. | tomato is an important vegetable crop and its production is adversely affected by leaf curl disease caused by begomovirus. leaf curl disease is a serious concern for tomato crops caused by begomovirus in jeddah, kingdom of saudi arabia. tomato leaf curl disease has been shown to be mainly caused either by tomato leaf curl sudan virus or tomato yellow leaf curl virus as well as tomato leaf curl oman virus. many tomato plants infected with monopartite begomoviruses were also found to harbor a symp ... | 2016 | 27366765 |
| the salicylic acid-mediated release of plant volatiles affects the host choice of bemisia tabaci. | the whitefly bemisia tabaci (gennadius) (hemiptera: aleyrodidae) causes serious crop losses worldwide by transmitting viruses. we have previously shown that salicylic acid (sa)-related plant defenses directly affect whiteflies. in this study, we applied exogenous sa to tomato plants in order to investigate the interaction between sa-induced plant volatiles and nonviruliferous b. tabaci b and q or b- and q-carrying tomato yellow leaf curl virus (tylcv). the results showed that exogenous sa caused ... | 2016 | 27376280 |
| deciphering the biology of deltasatellites from the new world: maintenance by new world begomoviruses and whitefly transmission. | deltasatellites are small noncoding dna satellites associated with begomoviruses. the study presented here has investigated the biology of two deltasatellites found in wild malvaceous plants in the new world (nw). infectious clones of two nw deltasatellites (from malvastrum coromandelianum and sidastrum micranthum) and associated begomoviruses were constructed. infectivity in nicotiana benthamiana and their natural malvaceous hosts was assessed. the nw deltasatellites were not able to spread aut ... | 2016 | 27400152 |
| comparative proteomic analysis provides novel insight into the interaction between resistant vs susceptible tomato cultivars and tylcv infection. | tomato yellow leaf curl virus (tylcv) is a member of the family geminiviridae, genus begomovirus. the virus is a widespread plant virus that causes important economic losses in tomatoes. genetic engineering strategies have increasingly been adopted to improve the resistance of tomatoes to tylcv. | 2016 | 27436092 |