| assessment of aegilops tauschii for resistance to biotypes of wheat curl mite (acari: eriophyidae). | aegilops tauschii, the wild diploid d-genome progenitor of wheat, triticum aestivum l., is an important source of resistance to several arthropod pests and pathogens. a total of 108 ae. tauschii accessions from different geographic regions were evaluated for resistance to biotypes of the wheat curl mite, aceria tosichella keifer, from kansas, nebraska, and montana. the wheat curl mite is the only vector known to transmit wheat streak mosaic virus. wheat curl mite resistance was detected in germp ... | 2003 | 14503608 |
| wheat curl mite resistance: interactions of mite feeding with wheat streak mosaic virus infection. | the majority of plant viruses are dependent on arthropod vectors for spread between plants. wheat streak mosaic virus (family potyviridae, genus tritimovirus, wsmv) is transmitted by the wheat curl mite, aceria tosichella keifer, and this virus and vector cause extensive yield losses in most major wheat (triticum aestivum l.)-growing regions of the world. many cultivars in use are susceptible to this vector-virus complex, and yield losses of 10-99% have been documented. wheat curl mite resistanc ... | 2011 | 21882710 |
| wheat cultivar-specific disease synergism and alteration of virus accumulation during co-infection with wheat streak mosaic virus and triticum mosaic virus. | triticum mosaic virus (trimv), the type member of the newly proposed poacevirus genus, and wheat streak mosaic virus (wsmv), the type member of tritimovirus genus of the family potyviridae, infect wheat naturally in the great plains and are transmitted by wheat curl mites. in this study, we examined the ability of these viruses to infect selected cereal hosts, and found several differential hosts between trimv and wsmv. additionally, we examined the interaction between wsmv and trimv in three wh ... | 2010 | 20128696 |
| molecular markers indicate that the wheat curl mite, aceria tosichella keifer, may represent a species complex in australia. | the wheat curl mite (wcm), aceria tosichella keifer, is an eriophyoid pest of cereals, and the vector responsible for transmitting wheat streak mosaic virus. several authors have suggested cryptic species of this mite identified through morphological variation, but this has never been conclusively demonstrated. here, we use the mitochondrial 16s rrna gene and two nuclear markers (internal transcribed spacer 1 and adenine nucleotide translocase) to show that wcm from australia consists of at leas ... | 2009 | 19224660 |
| fully biologically active in vitro transcripts of the eriophyid mite-transmitted wheat streak mosaic tritimovirus. | abstract infectious rna of wheat streak mosaic virus (wsmv) has been produced using a full-length cdna clone as a template for in vitro transcription with sp6 rna polymerase. infectivity was dependent on the use of template plasmid dna that had not undergone spontaneous rearrangement during amplification in escherichia coli. the presence of wsmv in systemically infected wheat plants inoculated with in vitro transcripts was confirmed by reverse-transcription polymerase chain reaction of the wsmv ... | 1999 | 18944643 |
| c-banding and fluorescence in situ hybridization studies of the wheat-alien hybrid 'agrotana'. | 'agrotana', a wheat-alien hybrid (2n = 56), is a potential source of resistance to common root rot, stem rust, wheat streak mosaic virus, and the wheat curl mite. however, the origin of 'agrotana', reported to be durum wheat x agropyron trichophorum (pubescent wheatgrass), is uncertain. the objective of this investigation was to determine the chromosome constitution of 'agrotana' using c-banding and fluorescence in situ hybridization techniques. the f1 hybrid of 'agrotana' x 'chinese spring' whe ... | 1994 | 18470093 |
| substitution of conserved cysteine residues in wheat streak mosaic virus hc-pro abolishes virus transmission by the wheat curl mite. | substitutions in the amino-proximal region of wheat streak mosaic virus (wsmv) hc-pro were evaluated for effects on transmission by the wheat curl mite (aceria tosichella keifer). alanine substitution at cysteine residues 16, 46 and 49 abolished vector transmission. although alanine substitution at cys(20) had no effect, substitution with arginine reduced vector transmission efficiency. random substitutions at other positions (lys(7) to asn, asn(19) to ile, and arg(45) to lys) did not affect vec ... | 2007 | 17680324 |
| plant virus hc-pro is a determinant of eriophyid mite transmission. | the eriophyid mite transmitted wheat streak mosaic virus (wsmv; genus tritimovirus, family potyviridae) shares a common genome organization with aphid transmitted species of the genus potyvirus. although both tritimoviruses and potyviruses encode helper component-proteinase (hc-pro) homologues (required for nonpersistent aphid transmission of potyviruses), sequence conservation is low (amino acid identity, approximately 16%), and a role for hc-pro in semipersistent transmission of wsmv by the wh ... | 2005 | 15994799 |
| influence of volunteer wheat plant condition on movement of the wheat curl mite, aceria tosichella, in winter wheat. | the wheat curl mite (wcm), aceria tosichella keifer, is the vector of wheat streak mosaic virus and high plains virus which cause significant crop loss in winter wheat throughout the western great plains. volunteer wheat emerging before harvest, as a result of severe hail, is the primary source of mites and virus that infect fall-planted winter wheat. wind-borne movement of the wcm is of key importance in the spread and infection of the virus complex. significant movement of wcm from wheat has b ... | 2003 | 14974690 |
| molecular cytogenetic discrimination and reaction to wheat streak mosaic virus and the wheat curl mite in zhong series of wheat--thinopyrum intermedium partial amphiploids. | thinopyrum intermedium (2n = 6x = 42, jjjsjsss) is potentially a useful source of resistance to wheat streak mosaic virus (wsmv) and its vector, the wheat curl mite (wcm). five partial amphiploids, namely zhong 1, zhong 2, zhong 3, zhong 4, and zhong 5, derived from triticum aestivum x thinopyrum intermedium crosses produced in china, were screened for wsmv and wcm resistance. zhong 1 and zhong 2 had high levels of resistance to wsmv and wcm. the other three partial amphiploids, zhong 3, 4, and ... | 2003 | 12669806 |
| colony establishment and maintenance of the eriophyid wheat curl mite aceria tosichella for controlled transmission studies on a new virus-like pathogen. | high plains disease (hpd) is of serious economic concern for wheat and corn production, but little is known about the virus-like causal agent. in the field, hpd is often associated with wheat streak mosaic virus (wsmv) and both pathogens are transmitted by the same eriophyid wheat curl mite, aceria tosichella keifer. the objective of this study was to develop methods for establishing and maintaining hpd-transmitting wheat curl mite colonies for their use in studies on hpd. towards this goal, mit ... | 2003 | 12565164 |
| three distinct mechanisms facilitate genetic isolation of sympatric wheat streak mosaic virus lineages. | cross-protection and vector transmission bottlenecks have been proposed as mechanisms facilitating genetic isolation of sympatric viral lineages. molecular markers were used to monitor establishment and resolution of mixed infections with genetically defined strains of wheat streak mosaic virus (wsmv). two closely related wsmv strains from the u.s. (type and sidney 81) exhibited reciprocal cross-protection in wheat, confirming this classic phenomenon as a mechanism of genetic isolation. in contr ... | 2001 | 11289805 |
| molecular characterization of haynaldia villosa chromatin in wheat lines carrying resistance to wheat curl mite colonization. | wheat-haynaldia villosa (l.) schur, hybrid lines were tested as potential sources of resistance to colonization by the wheat curl mite, the vector of wheat streak mosaic virus. two lines, add 6v-1 and sub 6v-1, were found to be mite-resistant. fluorescence in situ hybridization using total genomic dna, from h. villosa in the presence of unlabelled wheat dna, confirmed that add 6v-1 is a disomic wheat-h. villosa chromosome addition line. sub 6v-1 turned out to be a homoeologous wheat-h. villosa c ... | 1996 | 24162394 |
| development of pcr markers linked to resistance to wheat streak mosaic virus in wheat. | wheat streak mosaic virus (wsmv), vectored by the wheat curl mite (acer tulipae), is an important disease of wheat (triticum aestivum l.) in the north american great plains. resistant varieties have not been developed for two primary reasons. first, useful sources of resistance have not been available, and second, field screening for virus resistance is laborious and beyond the scope of most breeding programs. the first problem may have been overcome by the development of resistance to both the ... | 1996 | 24162306 |
| in vitro transcripts of wild-type and fluorescent protein-tagged triticum mosaic virus (family potyviridae) are biologically active in wheat. | triticum mosaic virus (trimv) (genus poacevirus, family potyviridae) is a recently described eriophyid mite-transmitted wheat virus. in vitro rna transcripts generated from full-length cdna clones of trimv proved infectious on wheat. wheat seedlings inoculated with in vitro transcripts elicited mosaic and mottling symptoms similar to the wild-type virus, and the progeny virus was efficiently transmitted by wheat curl mites, indicating that the cloned virus retained pathogenicity, movement, and w ... | 2015 | 26214124 |
| nine eriophyoid mite species from iran (acari, eriophyidae). | nine eriophyoid mites, including two new species and five new records, from iran are described and illustrated. they are aceria acroptiloni shevchenko & kacalev, 1974, rec. n. on rhaponticum repens (l.) hidalgo (asteraceae); aceria anthocoptes (nalepa, 1892), rec. n. on cirsium arvense (l.) scop. (asteraceae); aceria lactucae (canestrini, 1893), rec. n. on lactuca virosa l. (asteraceae); aceria pulicarissp. n. on pulicaria gnaphalodes (vent.) boiss. (asteraceae); aceria tosichella keifer, 1969 o ... | 2011 | 22144865 |
| wheat genotypes with combined resistance to wheat curl mite, wheat streak mosaic virus, wheat mosaic virus, and triticum mosaic virus. | the wheat curl mite, aceria tosichella keifer, (wcm) is a global pest of bread wheat that reduces yields significantly. in addition, wcm carries wheat streak mosaic virus (wsmv, family potyviridae, genus tritimovirus), the most significant wheat virus in north america; high plains wheat mosaic virus (hpwmov, genus emaravirus, formerly high plains virus); and triticum mosaic virus (trimv, family potyviridae, genus poacevirus). viruses carried by wcm have reduced wheat yields throughout the u.s. g ... | 2017 | 28087646 |
| population dynamics of the wheat curl mite (acari: eriophyidae) during the heading stages of winter wheat. | the wheat curl mite (aceria tosichella keifer) is the only known vector of three viruses in wheat-wheat streak mosaic virus, wheat mosaic virus, and triticum mosaic virus. the economic impact of this disease complex is linked to the presence of suitable hosts prior to winter wheat maturing in early summer and the movement of wheat curl mite from wheat to oversummering hosts prior to wheat harvest. previous research has documented the prevalence and density of mite populations on maturing wheat h ... | 2017 | 28334133 |
| multiple categories of resistance to wheat curl mite (acari: eriophyidae) expressed in accessions of aegilops tauschii. | the wheat curl mite, aceria tosichella keifer, is an important pest in the western plains of the united states as well as in most major wheat-growing regions of the world. this mite is a vector of the economically important diseases wheat streak mosaic virus (wsmv), triticum mosaic virus (trimv), and high plains virus (hpv). this study looked at seven accessions of aegilops tauschii (coss) schmal to determine if they exhibit antibiosis, tolerance, and/or antixenosis to the wheat curl mite using ... | 2012 | 23356085 |
| population genetics of the wheat curl mite (aceria tosichella keifer) in australia: implications for the management of wheat pathogens. | the wheat curl mite (wcm), aceria tosichella keifer, is a polyphagous eriophyoid mite and the primary vector of wheat streak mosaic virus (wsmv) and five other viral pathogens in cereals. previous research using molecular markers and a series of laboratory experiments found a. tosichella in australia to consist of two genetically distinct lineages, which have broad overlapping distributions and differ in their ability to transmit wsmv under controlled conditions. this pattern of transmission als ... | 2011 | 22030277 |
| hairpin rna derived from viral nia gene confers immunity to wheat streak mosaic virus infection in transgenic wheat plants. | wheat streak mosaic virus (wsmv), vectored by wheat curl mite, has been of great economic importance in the great plains of the united states and canada. recently, the virus has been identified in australia, where it has spread quickly to all major wheat growing areas. the difficulties in finding adequate natural resistance in wheat prompted us to develop transgenic resistance based on rna interference (rnai). an rnai construct was designed to target the nuclear inclusion protein 'a' (nia) gene ... | 2010 | 20374525 |
| eriophyid mite transmission and host range of a brome streak mosaic virus isolate derived from a full-length cdna clone. | biolistic inoculation of hordeum vulgare and phalaris paradoxa with a brome streak mosaic virus (brsmv) full-length cdna clone (pbrsmv(fl)) led to typical leaf streak symptoms in both plant species. infected h. vulgare plants showed a more stunted growth 8 weeks after symptom appearance compared to brsmv wild type (brsmv(wt))-infected plants. moreover, a slightly higher virus titer was observed in brsmv(fl)-inoculated h. vulgare, a. sativa and p. paradoxa plants. the biological activity of brsmv ... | 2008 | 17957328 |
| thinopyrum ponticum and th. intermedium: the promising source of resistance to fungal and viral diseases of wheat. | thinopyrum ponticum and th. intermedium provide superior resistance against various diseases in wheat (ttricum aestivum). because of their readily crossing with wheat, many genes for disease resistance have been introduced from the wheatgrasses into wheat. genes for resistance to leaf rust, stem rust, powdery mildew, barley yellow dwarf virus, wheat streak mosaic virus, and its vector, the wheat curl mite, have been transferred into wheat by producing chromosome translocations. these genes offer ... | 2009 | 19782957 |
| quantifying wheat yield across the field as a function of wheat streak mosaic intensity: a state space approach. | wheat streak mosaic virus (wsmv), vectored by the wheat curl mite aceria tosichella, is one of the major limiting factors in wheat production in the texas panhandle. the mites are blown by wind into wheat fields from nearby volunteer wheat fields or fields supporting vegetation which harbor virulent mites. consequently, gradients of wheat streak severity are often observed stretching from the edges of wheat fields into the center or beyond. to describe the magnitude of the spatial relationships ... | 2009 | 19271985 |
| sequence diversity of wheat mosaic virus isolates. | wheat mosaic virus (wmov), transmitted by eriophyid wheat curl mites (aceria tosichella) is the causal agent of high plains disease in wheat and maize. wmov and other members of the genus emaravirus evaded thorough molecular characterization for many years due to the experimental challenges of mite transmission and manipulating multisegmented negative sense rna genomes. recently, the complete genome sequence of a nebraska isolate of wmov revealed eight segments, plus a variant sequence of the nu ... | 2016 | 26590326 |
| isolation, transmission and purification of the high plains virus. | the wheat curl mite (aceria tosichella keifer) often simultaneously transmits the high plains virus and wheat streak mosaic virus under field conditions, resulting in doubly infected plants. in this study, a pure culture of the high plains virus (isolate hpv95id), which was infected with both high plains virus and wheat streak mosaic virus, was mechanically transmitted from barley (hordeum vulgáre l.) to maize (zea mays l.) by vascular puncture inoculation. different water temperatures and durat ... | 2006 | 16672165 |
| nested deletion analysis of wheat streak mosaic virus hc-pro: mapping of domains affecting polyprotein processing and eriophyid mite transmission. | a series of in-frame and nested deletion mutations which progressively removed 5'-proximal sequences of the wheat streak mosaic virus (wsmv) hc-pro coding region (1152 nucleotides) was constructed and evaluated for pathogenicity to wheat. wsmv hc-pro mutants with 5'-proximal deletions of 12 to 720 nucleotides systemically infected wheat. boundary sequences flanking the deletions were stable and unaltered by passage through plants for all deletion mutants except hcd12 (lacking hc-pro codons 3-6) ... | 2006 | 16540139 |
| hessian fly resistance gene h13 is mapped to a distal cluster of resistance genes in chromosome 6ds of wheat. | h13 is inherited as a major dominant resistance gene in wheat. it was previously mapped to chromosome 6dl and expresses a high level of antibiosis against hessian fly (hf) [mayetiola destructor (say)] larvae. the objective of this study was to identify tightly linked molecular markers for marker-assisted selection in wheat breeding and as a starting point toward the map-based cloning of h13. fifty-two chromosome 6d-specific microsatellite (simple sequence repeat) markers were tested for linkage ... | 2005 | 15942758 |
| potential new sources of wheat curl mite resistance in wheat to prevent the spread of yield-reducing pathogens. | the wheat curl mite (wcm), aceria tosichella keifer (trombidiformes: eriophyidae), is a major pest in cropping regions of the world and is recognised as the primary vector of several yield-reducing pathogens, primarily affecting wheat. management of wcm is complicated due to several aspects of the mite's biology and ecology; however, commercially viable mite resistant wheat varieties may offer practical long-term management options. unfortunately, mite populations have adapted to previously iden ... | 2014 | 24705793 |
| phylogenetic analyses reveal extensive cryptic speciation and host specialization in an economically important mite taxon. | the wheat curl mite (wcm) is a major pest in cereal crops around the world and the vector of at least four known pathogens capable of reducing yields in crops such as wheat, corn, barley, oats, millet and rye. current taxonomy recognizes wcm as a single species, aceriatosichella; however, recent genetic, physiological and ecological studies have shown that wcm is likely to be a species complex. in this study we assessed genetic variation and phylogenetic relationships among wcm from four contine ... | 2013 | 23246929 |
| the effect of temperature, relative humidity, and virus infection status on off-host survival of the wheat curl mite (acari: eriophyidae). | the wheat curl mite, aceria tosichella keifer, is an eriophyid pest of wheat, although its primary economic impact on wheat is due to the transmission of wheat streak mosaic (wsmv), wheat mosaic (also known as high plains virus), and triticum mosaic (trimv) viruses. these viruses cause significant annual losses in winter wheat production throughout the western great plains. temperature and humidity are factors that often influence arthropod survival, especially during dispersal from their hosts, ... | 2015 | 26470294 |
| wheat curl mite, aceria tosichella, and transmitted viruses: an expanding pest complex affecting cereal crops. | the wheat curl mite (wcm), aceria tosichella, and the plant viruses it transmits represent an invasive mite-virus complex that has affected cereal crops worldwide. the main damage caused by wcm comes from its ability to transmit and spread multiple damaging viruses to cereal crops, with wheat streak mosaic virus (wsmv) and wheat mosaic virus (wmov) being the most important. although wcm and transmitted viruses have been of concern to cereal growers and researchers for at least six decades, they ... | 2013 | 23179064 |
| genetic characterization of north american populations of the wheat curl mite and dry bulb mite. | the wheat curl mite, aceria tosichella keifer, transmits at least three harmful viruses, wheat streak mosaic virus (wsmv), high plains virus (hpv), and triticum mosaic virus (trimv) to wheat (triticum aestivum l.) throughout the great plains. this virus complex is considered to be the most serious disease of winter wheat in the western great plains. one component of managing this disease has been developing mite resistance in wheat; however, identification of mite biotypes has complicated deploy ... | 2012 | 23156180 |
| exceptionally high levels of genetic diversity in wheat curl mite (acari: eriophyidae) populations from turkey. | recent research on the wheat curl mite species complex has revealed extensive genetic diversity that has distinguished several genetic lineages infesting bread wheat (triticum aestivum l.) and other cereals worldwide. turkey is the historical region of wheat and barley (hordeum vulgare l.) domestication and diversification. the close relationship between these grasses and the wheat curl mite provoked the question of the genetic diversity of the wheat curl mite in this region. the scope of the st ... | 2015 | 26470350 |
| wheat streak mosaic virus coat protein is a determinant for vector transmission by the wheat curl mite. | wheat streak mosaic virus (wsmv; genus tritimovirus; family potyviridae), is transmitted by the wheat curl mite (aceria tosichella keifer). the requirement of coat protein (cp) for wsmv transmission by the wheat curl mite was examined using a series of viable deletion and point mutations. mite transmission of wsmv was completely abolished with deletions comprising cp amino acids 58-100. in contrast, the amino-proximal (amino acids 6-27 and 36-57) and carboxy-terminal (14 amino acids) regions of ... | 2018 | 29128755 |
| behavioural responses to potential dispersal cues in two economically important species of cereal-feeding eriophyid mites. | passively dispersing organisms should optimise the time and direction of dispersal by employing behaviours that increase their probability of being successfully transported by dispersal agents. we rigorously tested whether two agriculturally important passively-dispersing eriophyoid species, wheat curl mite (wcm) and cereal rust mite (crm), display behaviours indicating their readiness to depart from current host plants in the presence of potential dispersal cues: wind, an insect vector and pres ... | 2017 | 28634374 |
| planting date and variety selection for management of viruses transmitted by the wheat curl mite (acari: eriophyidae). | wheat is an important food grain worldwide, and it is the primary dryland crop in the western great plains. a complex of three viruses (wheat streak mosaic, wheat mosaic, and triticum mosaic viruses) is a common cause of loss in winter wheat production in the great plains. all these viruses are transmitted by the wheat curl mite (aceria tosichella keifer). once these viruses are established, there are no curative actions; therefore, prevention is the key to successful management. a study was des ... | 2016 | 26516091 |
| cytological and molecular characterization of a chromosome interchange and addition lines in cadet involving chromosome 5b of wheat and 6ag of lophopyrum ponticum. | efforts to transfer wheat curl mite (eriophyes tulipae keifer) resistance from lophopyrum ponticum 10x (podb.) love to bread wheat (triticum aestivum l.) have resulted in the production of a number of cytogenetic stocks, including an addition line of 6ag, a "ditelo" addition line, and a wheat-lophopyrum translocation line. characterization of these lines with c-banding, in situ hybridization with a lophopyrum species-specific repetitive dna probe (pleucd2), and southern blotting with pleucd2 and ... | 1993 | 24193877 |
| a new eriophyid mite-borne membrane-enveloped virus-like complex isolated from plants. | a decade ago, a new mite-transmitted disease was described on wheat (triticum aesativum) and maize (zea mays) that due to its geographical location was referred to as high plains disease (hpd). to determine the etiology, we established colonies of hpd pathogen-transmitting eriophyid wheat curl mites (aceria tosichella) on wheat plants for maintenance of a continuous source of infected material. analyses of nucleic acid obtained from infected plants showed the presence of hpd-specific rnas rangin ... | 2006 | 16412487 |
| wheat curl mite (acari: eriophyidae) dispersal and its relationship with kernel red streaking in maize. | wheat curl mites, aceria tosichella keifer, dispersing from wheat (triticum spp.) to nearby corn (zea mays l.) fields play a role in the development of kernel red streaking in corn. these studies were undertaken to verify the relationship of wheat curl mite to kernel red streaking, to determine whether wheat is the main source of curl mites dispersing into corn and to determine whether planting corn in temporal or spatial isolation of wheat is a valid management strategy. these studies were cond ... | 2005 | 16334327 |
| thermal niches of two invasive genotypes of the wheat curl mite aceria tosichella: congruence between physiological and geographical distribution data. | the wheat curl mite (wcm), aceria tosichella keifer, is a major pest of cereals worldwide. it is also a complex of well-defined genetic lineages with divergent physiological traits, which has not been accounted for in applied contexts. the aims of the study were to model the thermal niches of the two most pestiferous wcm lineages, designated mt-1 and mt-8, and to assess the extent to which temperature determines the distribution of these lineages. wcm population dynamics were modeled based on th ... | 0 | 27123590 |
| spatial and host-related variation in prevalence and population density of wheat curl mite (aceria tosichella) cryptic genotypes in agricultural landscapes. | the wheat curl mite (wcm), aceria tosichella keifer, is a major pest of cereals worldwide that also comprises a complex of at least 16 genetic lineages with divergent physiological traits, including host associations and specificity. the goal of this study was to test the extent to which host-plant species and landscape spatial variation influence wcm presence and population density across the entire area of poland (>311,000 km2). three important findings arose from the results of the study. (1) ... | 0 | 28099506 |