Publications

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mir529a modulates panicle architecture through regulating squamosa promoter binding-like genes in rice (oryza sativa).mir529a affects rice panicle architecture by targeting osspl2,osspl14 and osspl17 genes that could regulate their downstream panicle related genes. the panicle architecture determines the grain yield and quality of rice, which could be regulated by many transcriptional factors. the squamosa promoter binding-like (spl) transcription factors are involved in the regulation of panicle development, which are targeted by mir156 and mir529. the expression profile demonstrated that mir529a is preferenti ...201728551765
a rice nac transcription factor promotes leaf senescence via aba biosynthesis.it is well known that abscisic acid (aba)-induced leaf senescence and premature leaf senescence negatively affect the yield of rice (oryza sativa). however, the molecular mechanism underlying this relationship, especially the upstream transcriptional network that modulates aba level during leaf senescence, remains largely unknown. here, we demonstrate a rice nac transcription factor, osnac2, that participates in aba-induced leaf senescence. overexpression of osnac2 dramatically accelerated leaf ...201728500268
genome-wide identification of histone modifiers and their expression patterns during fruit abscission in litchi.modifications to histones, including acetylation and methylation processes, play crucial roles in the regulation of gene expression in plant development as well as in stress responses. however, limited information on the enzymes catalyzing histone acetylation and methylation in non-model plants is currently available. in this study, several histone modifier (hm) types, including six histone acetyltransferases (hats), 11 histone deacetylases (hdacs), 48 histone methyltransferases (hmts), and 22 h ...201728496451
rice sucrose partitioning mediated by a putative pectin methyltransferase and homogalacturonan methylesterification.homogalacturonan (hg) is the main component of pectins. hg methylesterification has recently emerged as a key determinant controlling cell attachment, organ formation, and phyllotaxy. however, whether and how hg methylesterification affects intercellular metabolite transport has rarely been reported. here, we identified and characterized knockout mutants of the rice (oryza sativa) osqua2 gene encoding a putative pectin methyltransferase. osqua2 mutants exhibit a remarkable decrease in the degree ...201728495893
integration of cerium chemical forms and subcellular distribution to understand cerium tolerance mechanism in the rice seedlings.rare earth elements (rees) accumulate in the soil and ecosystem. cerium (ce) is one of the main additives in ree-containing fertilizers. however, little information is available on ce distribution patterns and chemical forms in rice. the subcellular distribution and chemical forms of ce were investigated in the rice seedlings (oryza sativa l., cv. zhonghua 11) exposed to 0, 10, 20, 40, 80, and 160 μm ce. the elongation of root and shoot was significantly inhibited by 20, 40, 80, and 160 μm ce. c ...201728547370
low-cesium rice: mutation in ossos2 reduces radiocesium in rice grains.in japan, radiocesium contamination in foods has become of great concern and it is a primary issue to reduce grain radiocesium concentration in rice (oryza sativa l.). here, we report a low-cesium rice mutant 1 (lcs1) with the radiocesium concentration in grain about half that in the wild-type cultivar. genetic analyses revealed that a mutation in ossos2, which encodes a serine/threonine-protein kinase required for the salt overly sensitive (sos) pathway in plants, is responsible for the decreas ...201728546542
accumulation, translocation and conversion of six arsenic species in rice plants grown near a mine impacted city.paddy rice (oryza sativa l.) as the staple food in china was found to be efficient in accumulating arsenic (as) due to cultivated in flooded paddy soil. uptake and translocation of as in rice plant depended on the as species. in this work, rice plant samples including roots, straws and grains as well as rhizosphere soils were collected from paddy fields near changsha, a mine impacted city in southern china. the total as concentrations in the collected samples were observed in the descending orde ...201728531558
development of a new heat tolerance assay system for rice spikelet sterility.reduction in rice yield caused by high temperature-induced spikelet sterility has been a serious concern in rice production. to date, several screening methods have been used, although their reproducibility is sometimes poor due to artifacts mainly caused by varietal differences in heading dates and panicle heights (i.e., the distance from the lamps).201728491121
osphyb-mediating novel regulatory pathway for drought tolerance in rice root identified by a global rna-seq transcriptome analysis of rice genes in response to water deficiencies.water deficiencies are one of the most serious challenges to crop productivity. to improve our understanding of soil moisture stress, we performed rna-seq analysis using roots from 4-week-old rice seedlings grown in soil that had been subjected to drought conditions for 2-3 d. in all, 1,098 genes were up-regulated in response to soil moisture stress for 3 d, which causes severe damage in root development after recovery, unlikely that of 2 d. comparison with previous transcriptome data produced i ...201728491065
oshkt1;5 mediates na+ exclusion in the vasculature to protect leaf blades and reproductive tissues from salt toxicity in rice.salt tolerance quantitative trait loci analysis of rice has revealed that the skc1 locus, which is involved in a higher k+ /na+ ratio in shoots, corresponds to the oshkt1;5 gene encoding a na+ -selective transporter. however, physiological roles of oshkt1;5 in rice exposed to salt stress remain elusive, and no oshkt1;5 gene disruption mutants have been characterized to date. in this study, we dissected two independent t-dna insertional oshkt1;5 mutants. measurements of ion contents in tissues an ...201728488420
endophytic fungi piriformospora indica mediated protection of host from arsenic toxicity.complex intercellular interaction is a common theme in plant-pathogen/symbiont relationship. cellular physiology of both the partners is affected by abiotic stress. however, little is known about the degree of protection each offers to the other from different types of environmental stress. our current study focused on the changes in response to toxic arsenic in the presence of an endophytic fungus piriformospora indica that colonizes the paddy roots. the primary impact of arsenic was observed i ...201728539916
genomic variation associated with local adaptation of weedy rice during de-domestication.de-domestication is a unique evolutionary process by which domesticated crops are converted into 'wild predecessor like' forms. weedy rice (oryza sativa f. spontanea) is an excellent model to dissect the molecular processes underlying de-domestication. here, we analyse the genomes of 155 weedy and 76 locally cultivated rice accessions from four representative regions in china that were sequenced to an average 18.2 × coverage. phylogenetic and demographic analyses indicate that chinese weedy rice ...201728537247
does arbuscular mycorrhizal fungus affect cadmium uptake and chemical forms in rice at different growth stages?effects of the arbuscular mycorrhizal fungus (amf) - rhizophagus intraradices (a mix of root pieces, mycelium pieces and spores) on the temporal variation of cd uptake and chemical forms in rice at four growth periods (tillering, jointing, flowering, and ripening stages) were investigated in soil added with 0, 2 and 10mgcdkg-1. results showed that the interactions amongst rice growth stages, soil cd concentrations and mycorrhizal inoculation had significant effects (p˂0.001) on root biomass, str ...201728531965
association mapping reveals novel genetic loci contributing to flooding tolerance during germination in indica rice.rice (oryza sativa l.) is the only cereal crop that possesses the ability to germinate under flooded or other oxygen-deficient conditions. rapid elongation of the coleoptile is a perfect response to flooding during germination, with coleoptile length differing among various rice varieties. despite multiple studies have uncovered valuable information concerning this trait by focusing on the physiological metabolism of oxygen stress, the underlying genetic mechanism still remains unknown. in the p ...201728487722
novel chitinase gene loc_os11g47510 from indica rice tetep provides enhanced resistance against sheath blight pathogen rhizoctonia solani in rice.sheath blight disease (shb), caused by the fungus rhizoctonia solani kühn, is one of the most destructive diseases of rice (oryza sativa l.), causing substantial yield loss in rice. in the present study, a novel rice chitinase gene, loc_os11g47510 was cloned from qtl region of r. solani tolerant rice line tetep and used for functional validation by genetic transformation of shb susceptible japonica rice line taipei 309 (tp309). the transformants were characterized using molecular and functional ...201728487708
a quantitative proteomic analysis of brassinosteroid-induced protein phosphorylation in rice (oryza sativa l.).the group of polyhydroxysteroid phytohormones referred to as the brassinosteroids (brs) is known to act on plant development and the stress response. br signal transduction relies largely on protein phosphorylation. by employing a label-free, ms (mass spectrometry)-based phosphoproteomic approach, we report here the largest profiling of 4,034 phosphosites on 1,900 phosphoproteins from rice young seedlings and their dynamic response to br. 1,821 proteins, including kinases, transcription factors ...201728439285
identification of qtls for yield and agronomic traits in rice under stagnant flooding conditions.stagnant flooding, where water of 25-50 cm remains until harvest time, is a major problem in rainfed lowland areas. most of the sub1 varieties, which can withstand around 2 weeks of complete submergence, perform poorly in these conditions. hence, varieties tolerant of stagnant flooding are essential.201728429297
diurnal changes in transcript and metabolite levels during the iron deficiency response of rice.rice (oryza sativa l.) is highly susceptible to iron (fe) deficiency due to low secretion levels of the mugineic acid (ma) family phytosiderophore (ps) 2'-deoxymugineic acid (dma) into the rhizosphere. the low levels of dma secreted by rice have proved challenging to measure and, therefore, the pattern of dma secretion under fe deficiency has been less extensively studied relative to other graminaceous monocot species that secrete high levels of ps, such as barley (hordeum vulgare l.).201728429296
fine mapping of a novel defective glume 1 (dg1) mutant, which affects vegetative and spikelet development in rice.in cereal crops, vegetative and spikelet development play important roles in grain yield and quality, but the genetic mechanisms that control vegetative and spikelet development remain poorly understood in rice. here, we identified a new rice mutant, defective glume 1 (dg1) mutant from cultivar zhonghua11 after ethyl methanesulfonate treatment. the dg1 mutant displayed the dwarfism with small, rolled leaves, which resulted from smaller cells and more bulliform cells. the dg1 mutant also had an e ...201728428794
genome-wide association studies to identify rice salt-tolerance markers.salinity is an ever increasing menace that affects agriculture worldwide. crops such as rice are salt sensitive, but its degree of susceptibility varies widely between cultivars pointing to extensive genetic diversity that can be exploited to identify genes and proteins that are relevant in the response of rice to salt stress. we used a diversity panel of 306 rice accessions and collected phenotypic data after short (6 h), medium (7 d) and long (30 d) salinity treatment (50 mm nacl). a genome-wi ...201728436093
stable mercury isotopes in polished rice (oryza sativa l.) and hair from rice consumers.mercury (hg) isotopic signatures were characterized in polished rice samples from china, u.s., and indonesia (n = 45). hg isotopes were also analyzed in paired hair samples for participants from china (n = 21). for the latter, we also quantified the proportion of methylmercury intake through rice (range: 31-100%), and the weekly servings of fish meals (range: 0-5.6 servings/weekly). for these participants, 29% (n = 6) never ingested fish, 52% (n = 11) ingested fish < twice/weekly, and 19% (n = 4 ...201728482656
metabolomic analysis of the effects of cadmium and copper treatment in oryza sativa l. using untargeted liquid chromatography coupled to high resolution mass spectrometry and all-ion fragmentation.while the knowledge of plant metabolomes has increased in the last few years, their response to the presence of toxicants is still poorly understood. here, we analyse the metabolomic changes in japanese rice (oryza sativa var. japonica) upon exposure to heavy metals (cd(ii) and cu(ii)) in concentrations from 10 to 1000 μm. after harvesting, rice metabolites were extracted from aerial parts of the plants and analysed by hplc (hilic tsk gel amide-80 column) coupled to a mass spectrometer quadrupol ...201728480907
inhibitory effect of tio2 nps on symbiotic arbuscular mycorrhizal fungi in plant roots.while nanoparticles (nps) are known to exhibit antimicrobial properties, their effects on symbiotic arbuscular mycorrhizal fungi (amf) in plant roots has to be carefully examined as nps particularly of titanium dioxide (tio2) reach plant roots through varied sources such as fertilisers, plant protection products and other nanoproducts. the objective of the present study is to assess the effect of tio2 nps on the symbiotic behaviour of amf colonising rice (oryza sativa l.) plants. using sol-gel m ...201728476964
l-cysteine desulfhydrase-related h2 s production is involved in osse5-promoted ammonium tolerance in roots of oryza sativa.previous studies revealed that rice heme oxygenase photoperiod sensitivity 5 (osse5) is involved in the regulation of tolerance to excess ammonium by enhancing antioxidant defence. in this study, the relationship between osse5 and hydrogen sulfide (h2 s), a well-known signalling molecule, was investigated. results showed that nh4 cl triggered the induction of l-cysteine desulfhydrase (l-des)-related h2 s production in rice seedling roots. a h2 s donor not only alleviated the excess ammonium-trig ...201728474399
ethylene-inhibited jasmonic acid biosynthesis promotes mesocotyl/coleoptile elongation of etiolated rice seedlings.elongation of the mesocotyl and coleoptile facilitates the emergence of rice (oryza sativa) seedlings from soil and is affected by various genetic and environment factors. the regulatory mechanism underlying this process remains largely unclear. here, we examined the regulation of mesocotyl and coleoptile growth by characterizing a gaoyao1 (gy1) mutant that exhibits a longer mesocotyl and longer coleoptile than its original variety of rice. gy1 was identified through map-based cloning and encode ...201728465411
qtls and analysis of the candidate gene for amylose, protein, and moisture content in rice (oryza sativa l.).in this study, we determined using nirs the heritability percentage of amylose, protein, and moisture content in polished and unpolished rice in a cndh population derived from a cross between cheongcheong and nagdong rice varieties. the results revealed a higher heritability percentage for the amylose content and compromised heritability for protein and moisture contents. we also conducted qtl analysis of rice for these major components and identified their chromosomal locations on a physical ma ...201728439810
side-effects of pesticides used in irrigated rice areas on telenomus podisi ashmead (hymenoptera: platygastridae).telenomus podisi ashmead (hymenoptera: platygastridae) is an important agent for the biological control of stink bug eggs in irrigated rice areas and the best strategy for its preservation is the use of selective pesticides. the aim of this study was to know the side-effects of pesticides used in brazilian irrigated rice areas on egg parasitoid t. podisi. we evaluated, under laboratory conditions, 13 insecticides, 11 fungicides, 11 herbicides, and a control (distilled water) in choice and no-cho ...201728439681
manipulation of glyoxalase pathway confers tolerance to multiple stresses in rice.crop plants face a multitude of diverse abiotic and biotic stresses in the farmers' fields. although there now exists a considerable knowledge of the underlying mechanisms of response to individual stresses, the crosstalk between response pathways to various abiotic and biotic stresses remains enigmatic. here, we investigated if the cytotoxic metabolite methylglyoxal (mg), excess of which is generated as a common consequence of many abiotic and biotic stresses, may serve as a key molecule linkin ...201728425127
non-essential element concentrations in brown grain rice: assessment by advanced data mining techniques.the concentrations of 17 non-essential elements (al, as, ba, be, cd, ce, cr, hg, la, li, pb, sb, sn, sr, th, ti, and tl) were determined in brown grain rice samples of two varieties: fortuna and largo fino. the samples were collected from the four main producing regions of corrientes province (argentina). quantitative determinations were performed by inductively coupled plasma mass spectrometry (icp-ms), using a validated method. the contents of as, be, cd, ce, cr, hg, pb, sb, sn, th, and tl wer ...201728424959
processes underlying a reproductive barrier in indica-japonica rice hybrids revealed by transcriptome analysis.in rice (oryza sativa), hybrids between indica and japonica subspecies are usually highly sterile, which provides a model system for studying postzygotic reproductive isolation. a killer-protector system, s5, composed of three adjacent genes (orf3, orf4, and orf5), regulates female gamete fertility of indica-japonica hybrids. to characterize the processes underlying this system, we performed transcriptomic analyses of pistils from rice variety balilla (bl), balilla with transformed orf5+ (bl5+) ...201728483876
the rice tcd11 encoding plastid ribosomal protein s6 is essential for chloroplast development at low temperature.plastid ribosome proteins (prps) are important components for chloroplast biogenesis and early chloroplast development. although it has been known that chloroplast ribosomes are similar to bacterial ones, the precise molecular function of ribosomal proteins remains to be elucidated in rice. here, we identified a novel rice mutant, designated tcd11 (thermo-sensitive chlorophyll-deficient mutant 11), characterized by the albino phenotype until it died at 20°c, while displaying normal phenotype at ...201728483049
evolutionary analysis of snf1-related protein kinase2 (snrk2) and calcium sensor (scs) gene lineages, and dimerization of rice homologs, suggest deep biochemical conservation across angiosperms.members of the sucrose non-fermenting related kinase group2 (snrk2) subclasses are implicated in both direct and indirect abscisic acid (aba) response pathways. we have used phylogenetic, biochemical, and transient in vivo approaches to examine interactions between triticum tauschii protein kinase 1 (ttpk1) and an interacting protein, oryza sativa snrk2-calcium sensor (osscs1). given that ttpk1 has 100% identity with its rice ortholog, osmotic stress/aba-activated protein kinase (ossapk2), we hy ...201728424709
qtl analysis and dissection of panicle components in rice using advanced backcross populations derived from oryza sativa cultivars hr1128 and 'nipponbare'.panicle traits are among the most important agronomic characters which directly relate to yield in rice. grain number (gn), panicle length (pl), primary branch number (pbn), and secondary branch number (sbn) are the major components of rice panicle structure, and are all controlled by quantitative trait loci (qtls). in our research, four advanced backcross overlapping populations (bil152, bil196a, bil196b, and bil196b-156) carrying introgressed segments from chromosome 6 were derived from an ind ...201728422981
uptake and translocation of imidacloprid, thiamethoxam and difenoconazole in rice plants.uptake and translocation of imidacloprid (imi), thiamethoxam (thx) and difenoconazole (dfz) in rice plants (oryza sativa l.) were investigated with a soil-treated experiment at two application rates: field rate (fr) and 10*fr under laboratory conditions. the dissipation of the three compounds in soil followed the first-order kinetics and dfz showed greater half-lives than imi and thx. detection of the three compounds in rice tissues indicated that rice plants could take up and accumulate these p ...201728454637
nitrogen fertilizer application affects lodging resistance by altering secondary cell wall synthesis in japonica rice (oryza sativa).stem mechanical strength is an important agricultural quantitative trait that is closely related to lodging resistance in rice, which is known to be reduced by fertilizer with higher levels of nitrogen. to understand the mechanism that regulates stem mechanical strength in response to nitrogen, we analysed stem morphology, anatomy, mechanical properties, cell wall components, and expression of cell wall-related genes, in two varieties of japonica rice, namely, wuyunjing23 (lodging-resistant vari ...201728451936
distribution, genetic diversity and potential spatiotemporal scale of alien gene flow in crop wild relatives of rice (oryza spp.) in colombia.crop wild relatives (cwrs) of rice hold important traits that can contribute to enhancing the ability of cultivated rice (oryza sativa and o. glaberrima) to produce higher yields, cope with the effects of climate change, and resist attacks of pests and diseases, among others. however, the genetic resources of these species remain dramatically understudied, putting at risk their future availability from in situ and ex situ sources. here we assess the distribution of genetic diversity of the four ...201728421550
regulation of coniferaldehyde 5-hydroxylase expression to modulate cell wall lignin structure in rice.regulation of a gene encoding coniferaldehyde 5-hydroxylase leads to substantial alterations in lignin structure in rice cell walls, identifying a promising genetic engineering target for improving grass biomass utilization. the aromatic composition of lignin greatly affects utilization characteristics of lignocellulosic biomass and, therefore, has been one of the primary targets of cell wall engineering studies. limited information is, however, available regarding lignin modifications in monoco ...201728421330
selective sweep with significant positive selection serves as the driving force for the differentiation of japonica and indica rice cultivars.asian cultivated rice (oryza sativa l.), including japonica and indica, is unarguable the most important crop in asia as well as worldwide. however, a decisive conclusion of its origination and domestication processes are still lacking. nowadays, the ever-increasing high-throughput sequencing data of numerous rice samples have provided us new opportunities to get close to the answer of these questions.201728420345
genome-wide analysis of vq motif-containing proteins in moso bamboo (phyllostachys edulis).29 moso bamboo vq proteins were genome-wide identified for the first time, and bioinformatics analysis was performed to investigate phylogenetic relationships and evolutionary divergence. the qrt-pcr data show that pevq genes response to different stress treatments. accumulating evidence suggests that vq motif-containing proteins in rice (oryza sativa), arabidopsis (arabidopsis thaliana), and maize (zea mays) play fundamental roles in response to various biotic and abiotic stresses. however, lit ...201728417193
exogenous application of rutin and gallic acid regulate antioxidants and alleviate reactive oxygen generation in oryza sativa l.the effect of rutin and gallic acid on growth, phytochemical and defense gene activation of rice (oryza sativa l.) was investigated. the seeds of rice were primed with different concentrations of rutin and gallic acid (10-60 µg ml-1) to explicate the effect on germination on water agar plates. further, to study the effect of most effective concentrations of gallic acid (60 µg ml-1) and rutin (50 µg ml-1), greenhouse pot experiment was set up to determine the changes in growth, antioxidant and de ...201728461719
mechanism study of sulfur fertilization mediating copper translocation and biotransformation in rice (oryza sativa l.) plants.metabolism of sulfur (s) is suggested to be an important factor for the homeostasis and detoxification of cu in plants. we investigated the effects of s fertilizers (s0, na2so4) on cu translocation and biotransformation in rice plants by using multiple synchrotron-based techniques. fertilization of s increased the biomass and yield of rice plants, as well as the translocation factor of cu from root to shoot and shoot to grain, resulting in enhanced cu in grain. sulfur k-edge x-ray near edge stru ...201728461082
progress and challenges in improving the nutritional quality of rice (oryza sativa l.).rice is a staple food for more than 3 billion people in more than 100 countries of the world but ironically it is deficient in many bioavailable vitamins, minerals, essential amino- and fatty-acids and phytochemicals that prevent chronic diseases like type 2 diabetes, heart disease, cancers, and obesity. to enhance the nutritional and other quality aspects of rice, a better understanding of the regulation of the processes involved in the synthesis, uptake, transport, and metabolism of macro-(sta ...201726513164
anticlastogenicity and anticarcinogenicity of purple rice extract in rats.oryza sativa l. var. indica cv. kum doi saket is a pigmented rice variety grown in northern thailand. our previous study found that the methanol extract of purple rice seed had the highest level of antimutagenicity in a salmonella mutation assay. the present study was designed to evaluate its in vivo anticlastogenic and anticarcinogenic potentials. the purple rice extract had no acute toxicity on rats. the oral administration of 1,000 mg/kg body weight (bw) of the extract for 28 days did not inc ...201727115481
phosphorus remobilization from rice flag leaves during grain filling: an rna-seq study.the physiology and molecular regulation of phosphorus (p) remobilization from vegetative tissues to grains during grain filling is poorly understood, despite the pivotal role it plays in the global p cycle. to test the hypothesis that a subset of genes involved in the p starvation response are involved in remobilization of p from flag leaves to developing grains, we conducted an rna-seq analysis of rice flag leaves during the preremobilization phase (6 daa) and when the leaves were acting as a p ...201727228336
endophytic bacterial and fungal microbiota in sprouts, roots and stems of rice (oryza sativa l.).the objective of this study was to elucidate the endophytic microbiota in rice sprouts, roots, and stems, and their transmission in the plant development. prior to dna extraction, roots and stems were treated with 36% formaldehyde and 0.1m naoh solutions to remove epiphytic bacterial whole 16s rrna genes. bacterial and fungal taxa in the sprout, root, and stem samples were analyzed using illumina-based sequencing of the v3-v4 hyper variable regions of bacterial 16s rrna genes and the its2 region ...201727296957
impact of postharvest drying conditions on in vitro starch digestibility and estimated glycemic index of cooked non-waxy long-grain rice (oryza sativa l.).wet paddy needs to be dried to reduce its moisture content after harvesting. in this study, effects of postharvest drying condition on in vitro starch digestibility and estimated glycemic index of cooked rice (oryza sativa l.) were investigated. varying drying conditions, i.e. hot-air drying at 40, 65, 90 and 115 °c, and sun drying were applied to raw paddy. after husking and polishing, polished grains were cooked using an electric rice cooker. cooked samples were analyzed for their moisture con ...201727234963
correction: mapping quantitative trait loci associated with toot traits using sequencing-based genotyping chromosome segment substitution lines derived from 9311 and nipponbare in rice (oryza sativa l.).[this corrects the article doi: 10.1371/journal.pone.0151796.].201727145028
defective pollen wall 2 (dpw2) encodes an acyl transferase required for rice pollen development.aliphatic and aromatic lipids are both essential structural components of the plant cuticle, an important interface between the plant and environment. although cross links between aromatic and aliphatic or other moieties are known to be associated with the formation of leaf cutin and root and seed suberin, the contribution of aromatic lipids to the biosynthesis of anther cuticles and pollen walls remains elusive. in this study, we characterized the rice (oryza sativa) male sterile mutant, defect ...201727246096
impact of volunteer rice infestation on yield and grain quality of rice.volunteer rice (oryza sativa l.) grains may differ in physicochemical traits from cultivated rice, which may reduce the quality of harvested rice grain. to evaluate the effect of volunteer rice on cultivated rice, fields were surveyed in arkansas in 2012.201727328627
removal of decabromodiphenyl ether (bde-209) using a combined system involving tio2 photocatalysis and wetland plants.there is a rising concern about the capability of sewage treatment works in treating emerging chemicals, such as polybrominated diphenyl ethers (pbdes). a combined photocatalysis (tio2 and visible light) and constructed wetland system (planted with oryza sativa (rice cultivar: hefengzhan) and phragmites australis (common reed)) was designed to study pbdes removal efficiencies. after the pre-treatment in tio2 suspension, the artificially bde-209 spiked sewage (78.2 and 782nmol/l) was discharged i ...201727321748
elemental composition of malawian rice.widespread potential dietary deficiencies of calcium (ca), iron (fe), iodine (i), selenium (se) and zinc (zn) have been identified in malawi. several deficiencies are likely to be compounded by high phytic acid (pa) consumption. rice (oryza sativa) is commonly consumed in some malawian populations, and its mineral micronutrient content is important for food security. the considerable irrigation requirements and flooded conditions of paddy soils can also introduce or mobilise potentially toxic el ...201727438079
large-scale bioinformatic analysis of the regulation of the disease resistance nbs gene family by micrornas in poaceae.in the present study, we have screened 71, 713, 525, 119 and 241 mature mirna variants from hordeum vulgare, oryza sativa, brachypodium distachyon, triticum aestivum, and sorghum bicolor, respectively, and classified them with respect to their conservation status and expression levels. these poaceae non-redundant mirna species (1,669) were distributed over a total of 625 mir families, among which only 54 were conserved across two or more plant species, confirming the relatively recent evolutiona ...201727349470
thirty-three years of 2-acetyl-1-pyrroline, a principal basmati aroma compound in scented rice (oryza sativa l.): a status review.rice is the staple food of around 3 billion people, most of them in asia which accounts for 90% of global rice consumption. aromatic rices have been preferred over non-aromatic rice for hundreds of years. they have a premium value in national as well as international market owing to their unique aroma and quality. many researchers were involved in identifying the compound responsible for the pleasant aroma in aromatic rice in the 20th century. however, due to its unstable nature, 2-acetyl-1-pyrr ...201727376959
silicon ameliorates chromium toxicity through phytochelatin-mediated vacuolar sequestration in the roots of oryza sativa (l.).high chromium (cr) in rice causes reduced yield and health hazards. this work investigates how si alleviates cr toxicity in rice. addition of si under cr stress restored the growth parameters, total protein content, and membrane stability along with reduced cr content in shoots, confirming that si plays critical roles in cr detoxification in rice. however, si supplementation under cr stress caused no significant changes in root cr content but decreased shoot cr concentrations compared with cr-st ...201727434775
simultaneous determination of multiclass emerging contaminants in aquatic plants by ultrasound-assisted matrix solid-phase dispersion and gc-ms.a multiresidue method was developed for the simultaneous determination of 31 emerging contaminants (pharmaceutical compounds, hormones, personal care products, biocides, and flame retardants) in aquatic plants. analytes were extracted by ultrasound-assisted matrix solid-phase dispersion (ua-mspd) and determined by gas chromatography-mass spectrometry after sylilation, the method was validated for different aquatic plants (typha angustifolia, arundo donax, and lemna minor) and a semiaquatic culti ...201726906007
identification of β-phenylalanine as a non-protein amino acid in cultivated rice, oryza sativa.non-protein amino acids, often analogs of the standard 20 protein amino acids, have been discovered in many plant species. recent research with cultivated rice (oryza sativa) identified (3r)-β-tyrosine, as well as a tyrosine amino mutase that synthesizes (3r)-β-tyrosine from the protein amino acid (2s)-α-tyrosine. gas chromatography-mass spectrometry (gc-ms) assays and comparison to an authentic standard showed that β-phenylalanine is also a relatively abundant non-protein amino acid in rice lea ...201727066169
prediction and identification of the effectors of heterotrimeric g proteins in rice (oryza sativa l.).heterotrimeric g protein signaling cascades are one of the primary metazoan sensing mechanisms linking a cell to environment. however, the number of experimentally identified effectors of g protein in plant is limited. we have therefore studied which tools are best suited for predicting g protein effectors in rice. here, we compared the predicting performance of four classifiers with eight different encoding schemes on the effectors of g proteins by using 10-fold cross-validation. four methods w ...201726970777
crystalline, thermal and swelling properties of starches from single-segment substitution lines with different wx alleles in rice (oryza sativa l.).in rice, five common wx alleles, wx, wxt , wxg1 , wxg2 and wxg3 , have been identified according to their apparent amylose content (aac) phenotypes. previous studies revealed that this wx allelic variation may also affect other starch properties. however, so far, to what extent the five wx alleles influence the crystalline structure, thermal and swelling properties of rice starch is still unclear. for this purpose, a set of single-segment substitution lines (sssls) harboring five different wx al ...201726926871
shoot tolerance mechanisms to iron toxicity in rice (oryza sativa l.).iron toxicity frequently affects lowland rice and leads to oxidative stress via the fenton reaction. tolerance mechanisms were investigated in contrasting genotypes: the intolerant ir29 and the tolerant recombinant inbred line fl483. seedlings were exposed to 1000 mg l-1 ferrous iron, and the regulation of genes involved in three hypothetical tolerance mechanisms was investigated (i) iron uptake, partitioning and storage. the iron concentration and speciation in different plant tissues did not d ...201726991510
the complete chloroplast genome of tibetan hulless barley.we report complete chloroplast genome of the tibetan hulless barely using iilumina hiseq 2000 sequencing technology (iilumina inc., san diego, ca). the chloroplast genome size is 136 462 bp in length that includes two inverted repeats (irs) of 10 528 bp, which are separated by the large single copy (lsc 101 375 bp) and small single copy (ssc 14 030 bp). hulless barely chloroplast genome encodes 76 protein-coding genes, four rrna genes, and 29 trna genes. the maximum-likelihood (ml) phylogenetic ...201726713356
prediction of phenotypic effects of variants observed in loc_os04g36720 of fro1 gene in rice (oryza sativa l.).in rice, ferric-chelate reductase-1 (fro1) (loc_os04g36720) gene was present on chromosome number 4 and its beginning and ending coordinates where coding sequence lies are 22182599 and 22186943, respectively. it plays a vital role in metal homeostasis and iron transportation in plants. based on the alignment results, location of single-nucleotide variants is located in open reading frame and their effects of variants were predicted using sift sequence tool. the non-synonymous variants at positio ...201726885647
ectopic expression of pgrab7 in rice plants (oryza sativa l.) results in differential tolerance at the vegetative and seed setting stage during salinity and drought stress.in this work, we have overexpressed a vesicle trafficking protein, rab7, from a stress-tolerant plant, pennisetum glaucum, in a high-yielding but stress-sensitive rice variety pusa basmati-1 (pb-1). the transgenic rice plants were tested for tolerance against salinity and drought stress. the transgenic plants showed considerable tolerance at the vegetative stage against both salinity (200 mm nacl) and drought stress (up to 12 days after withdrawing water). the protection against salt and drought ...201726666551
accurate measurement of transgene copy number in crop plants using droplet digital pcr.genetic transformation is a powerful means for the improvement of crop plants, but requires labor- and resource-intensive methods. an efficient method for identifying single-copy transgene insertion events from a population of independent transgenic lines is desirable. currently, transgene copy number is estimated by either southern blot hybridization analyses or quantitative polymerase chain reaction (qpcr) experiments. southern hybridization is a convincing and reliable method, but it also is ...201728231382
ratoon rice generated from primed parent plants exhibit enhanced herbivore resistance.rice ratooning is practiced in many rice-growing countries for achieving increased rice production with limited labour input. here, we report that attack by insect herbivores, or treatment with a defense signaling compound in parent plants, can prime anti-herbivore defense responses in subsequent ratoon plants. we compared the defense responses of rice ratoons generated from parent plants that had been either infested by cnaphalocrocis medinalis (rice leaffolder, lf) caterpillars or treated with ...201728042888
isolation and functional characterization of cslsi1, a silicon transporter gene in cucumis sativus.cucumber (cucumis sativus) is a widely grown cucurbitaceous vegetable that exhibits a relatively high capacity for silicon (si) accumulation, but the molecular mechanism for silicon uptake remains to be clarified. here we isolated and characterized cslsi1, a gene encoding a silicon transporter in cucumber (cv. mch-4). cslsi1 shares 55.70 and 90.63% homology with the lsi1s of a monocot and dicot, rice (oryza sativa) and pumpkin (cucurbita moschata), respectively. cslsi1 was predominantly expresse ...201727701737
de novo transcriptome assembly of phomopsis liquidambari provides insights into genes associated with different lifestyles in rice (oryza sativa l.).the mechanisms that trigger the switch from endophytic fungi to saprophytic fungi are largely unexplored. broad host range phomopsis liquidambari is established in endophytic and saprophytic systems with rice (oryza sativa l.). endophytic p. liquidambari promotes rice growth, increasing rice yield and improving the efficiency of nitrogen fertilizer. this species's saprophytic counterpart can decompose rice litterfall, promoting litter organic matter cycling and the release of nutrients and impro ...201728220138
tps46, a rice terpene synthase conferring natural resistance to bird cherry-oat aphid, rhopalosiphum padi (linnaeus).plant terpene synthases (tpss) are key enzymes responsible for terpene biosynthesis, and can play important roles in defense against herbivore attack. in rice, the protein sequence of tps46 was most closely related to maize tps10. however, unlike maize tps10, tps46 was also constitutively expressed in rice even in the absence of herbivore attack. potential roles or constitutive emissions of specific volatiles may due to the constitutive expressions of tps46 in rice. therefore, in the present stu ...201728217135
endophytic phomopsis sp. colonization in oryza sativa was found to result in plant growth promotion and piperine production.endophytic fungi have been reported to have the acquired ability to synthesize host plant specific medicinal natural products. many fungi with such properties have been characterized and optimized for the conditions which favor maximal production of desired products. however, the inherent plant colonization property of promising endophytic fungi is least studied. exploiting the transgenome functioning of these fungi have immense applications to add beneficial features to non-host plants. in the ...201728224643
influence of gamma radiation on the physical and sensory properties of two brazilian rice cultivars.little has been reported about the effects of gamma radiation on the physical and sensory characteristics of rice. samples were irradiated with (60) co in doses 0, 1, 2 and 5 kgy, on a rate of 0.4 kgy h(-1) .201727485521
biomass, gas exchange, and nutrient contents in upland rice plants affected by application forms of microorganism growth promoters.microorganisms are considered a genetic resource with great potential for achieving sustainable development of agricultural areas. the objective of this research was to determine the effect of microorganism application forms on the production of biomass, gas exchange, and nutrient content in upland rice. the experiment was conducted under greenhouse conditions in a completely randomized design in a factorial 7 × 3 + 1, with four replications. the treatments consisted of combining seven microorga ...201727844322
land-use change in indian tropical agro-ecosystems: eco-energy estimation for socio-ecological sustainability.this study was carried out to understand the ecological and economic sustainability of floriculture and other main crops in indian agro-ecosystems. the cultivation practices of four major flower crops, namely jasminum multiflorum, crossandra infundibuliformis, chrysanthemum and tagetes erecta, were studied in detail. the production cost of flowers in terms of energy was calculated to be 99,622-135,996 compared to 27,681-69,133 mj ha(-1) for the main crops, namely oryza sativa, eleusine coracana, ...201728315232
a phosphoproteomic landscape of rice (oryza sativa) tissues.protein phosphorylation is an important post-translational modification that regulates various plant developmental processes. here, we report a comprehensive, quantitative phosphoproteomic profile of six rice tissues, including callus, leaf, root, shoot meristem, young panicle and mature panicle from nipponbare by employing a ms-based, label-free approach. a total of 7171 unique phosphorylation sites in 4792 phosphopeptides from 2657 phosphoproteins were identified, including 4613 peptides were ...201728382632
interference of allelopathic rice with paddy weeds at the root level.despite increasing knowledge of the involvement of allelopathy in negative interactions among plants, relatively little is known about its action at the root level. this study aims to enhance understanding of interactions of roots between a crop and associated weeds via allelopathy. based on a series of experiments with window rhizoboxes and root segregation methods, we examined root placement patterns and root interactions between allelopathic rice and major paddy weeds cyperus difformis, echin ...201728218979
development and gbs-genotyping of introgression lines (ils) using two wild species of rice, o. meridionalis and o. rufipogon, in a common recurrent parent, o. sativa cv. curinga.two populations of interspecific introgression lines (ils) in a common recurrent parent were developed for use in pre-breeding and qtl mapping. the ils were derived from crosses between cv curinga, a tropical japonica upland cultivar, and two different wild donors, oryza meridionalis ng. accession (w2112) and oryza rufipogon griff. accession (irgc 105491). the lines were genotyped using genotyping-by-sequencing (gbs) and ssrs. the 32 curinga/o. meridionalis ils contain 76.73 % of the donor genom ...201725705117
novel alleles of phosphorus-starvation tolerance 1 gene (pstol1) from oryza rufipogon confers high phosphorus uptake efficiency.limited phosphorus availability in the soil is one of the major constraints to the growth and productivity of rice across asian, african and south american countries, where 50% of the rice is grown under rain-fed systems on poor and problematic soils. with an aim to determine novel alleles for enhanced phosphorus uptake efficiency in wild species germplasm of rice oryza rufipogon, we investigated phosphorus uptake1 (pup1) locus with 11 previously reported ssr markers and sequence characterized t ...201728443109
differential transcriptome profiling of chilling stress response between shoots and rhizomes of oryza longistaminata using rna sequencing.rice (oryza sativa) is very sensitive to chilling stress at seedling and reproductive stages, whereas wild rice, o. longistaminata, tolerates non-freezing cold temperatures and has overwintering ability. elucidating the molecular mechanisms of chilling tolerance (ct) in o. longistaminata should thus provide a basis for rice ct improvement through molecular breeding. in this study, high-throughput rna sequencing was performed to profile global transcriptome alterations and crucial genes involved ...201729190752
a hypersensitivity-like response to meloidogyne graminicola in rice (oryza sativa l.).meloidogyne graminicola (m. graminicola) is a major plant-parasitic nematode affecting rice cultivation in asia. resistance to this nematode was found in the african rice genotypes oryza glaberrima and o. longistaminata, however, due to interspecific hybrid sterility, the introgression of resistance genes in the widely consumed o. sativa varieties remains challenging. recently, resistance was found in o. sativa and here we report for the first time the histological and genetic characterization o ...201729161206
genome-wide analysis of rice dehydrin gene family: its evolutionary conservedness and expression pattern in response to peg induced dehydration stress.abiotic stresses adversely affect cellular homeostasis, impairing overall growth and development of plants. these initial stress signals activate downstream signalling processes, which, subsequently, activate stress-responsive mechanisms to re-establish homeostasis. dehydrins (dhns) play an important role in combating dehydration stress. rice (oryza sativa l.), which is a paddy crop, is susceptible to drought stress. as drought survival in rice might be viewed as a trait with strong evolutionary ...201728459834
estimation of loci involved in non-shattering of seeds in early rice domestication.rice (oryza sativa l.) is widely cultivated around the world and is known to be domesticated from its wild form, o. rufipogon. a loss of seed shattering is one of the most obvious phenotypic changes selected for during rice domestication. previously, three seed-shattering loci, qsh1, sh4, and qsh3 were reported to be involved in non-shattering of seeds of japonica-type cultivated rice, o. sativa cv. nipponbare. in this study, we focused on non-shattering characteristics of o. sativa indica cv. i ...201728238052
root-associated bacterial diversities of oryza rufipogon and oryza sativa and their influencing environmental factors.oryza rufipogon is the ancestor of human-cultivated oryza sativa. however, little is known about the difference between the root-associated microorganisms of o. rufipogon and o. sativa. in this study, the root-associated bacteria of o. rufipogon, leersia hexandra, and o. sativa from different latitudes in china were studied by dgge analysis. their bacterial community structures were compared by principal component analysis. the relationship between root-associated bacteria and soil properties wa ...201727990555
emergence of a novel chimeric gene underlying grain number in rice.grain number is an important factor in determining grain production of rice (oryza sativa l.). the molecular genetic basis for grain number is complex. discovering new genes involved in regulating rice grain number increases our knowledge regarding its molecular mechanisms and aids breeding programs. here, we identified grains number 2 (gn2), a novel gene that is responsible for rice grain number, from "yuanjiang" common wild rice (o. rufipogon griff.). transgenic plants overexpressing gn2 showe ...201727986805
gene interaction at seed-awning loci in the genetic background of wild rice.seed awning is one of the important traits for successful propagation in wild rice. during the domestication of rice by ancient humans, plants with awnless seeds may have been selected because long awns hindered collection and handling activities. to investigate domestication of awnless rice, qtl analysis for seed awning was first carried out using backcross recombinant inbred lines between oryza sativa nipponbare (recurrent parent) and o. rufipogon w630 (donor parent). two strong qtls were dete ...201727941309
macromolecular traits in the african rice oryza glaberrima and in glaberrima/sativa crosses, and their relevance to processing.molecular properties of proteins and starch were investigated in 2 accessions of oryza glaberrima and oryza sativa, and in one nerica cross between the 2 species, to assess traits that could be relevant to transformation into specific foods. protein nature and organization in o. glaberrima were different from those in o. sativa and in nerica. despite the similar cysteine content in all samples, thiol accessibility in o. glaberrima proteins was higher than in nerica or in o. sativa. inter-protein ...201728850662
construction of rice chromosome segment substitution lines harboring oryza barthii genome and evaluation of yield-related traits.rice (oryza sativa l.) is one of the most important staple food in the world. to meet the increasing demand for food, a strategy for improving rice yield is needed. alleles of wild relatives are useful because they confer adaptation to plants under diverse harsh environments and have the potential to improve rice. o. barthii is a wild rice species endemic to africa and the known progenitor of the african cultivated rice, o. glaberrima. to explore the genetic potential of the o. barthii as a gene ...201729085251
a walk on the wild side: oryza species as source for rice abiotic stress tolerance.oryza sativa, the common cultivated rice, is one of the most important crops for human consumption, but production is increasingly threatened by abiotic stresses. although many efforts have resulted in breeding rice cultivars that are relatively tolerant to their local environments, climate changes and population increase are expected to soon call for new, fast generation of stress tolerant rice germplasm, and current within-species rice diversity might not be enough to overcome such needs. the ...201728323300
genetic analysis of a hybrid sterility gene that causes both pollen and embryo sac sterility in hybrids between oryza sativa l. and oryza longistaminata.oryza longistaminata originates from african wild rice and contains valuable traits conferring tolerance to biotic and abiotic stress. however, interspecific crosses between o. longistaminata and oryza sativa cultivars are hindered by reproductive barriers. to dissect the mechanism of interspecific hybrid sterility, we developed a near-isogenic line (nil) using indica variety rd23 as the recipient parent and o. longistaminata as the donor parent. both pollen and embryo sac semi-sterility were ob ...201728657614
adapting genotyping-by-sequencing for rice f2 populations.rapid and cost-effective genotyping of large mapping populations can be achieved by sequencing a reduced representation of the genome of every individual in a given population, and using that information to generate genetic markers. a customized genotyping-by-sequencing (gbs) pipeline was developed to genotype a rice f2 population from a cross of oryza sativa ssp. japonica cv. nipponbare and the african wild rice species o. longistaminata while most gbs pipelines aim to analyze mainly homozygous ...201728082325
a single base change explains the independent origin of and selection for the nonshattering gene in african rice domestication.reduced seed shattering was a critical evolutionary step in crop domestication. two cultivated rice species, oryza sativa and oryza glaberrima, were independently domesticated from the wild species oryza rufipogon in asia and oryza barthii in africa, respectively. a single nucleotide polymorphism (snp) in the c gene, which encodes a trihelix transcription factor, causes nonshattering in o. sativa. however, the genetic mechanism of nonshattering in o. glaberrima is poorly understood. we conducted ...201727861933
ancient plant glyoxylate/succinic semialdehyde reductases: glyr1s are cytosolic, whereas glyr2s are localized to both mitochondria and plastids.plant nadph-dependent glyoxylate/succinic semialdehyde reductases 1 and 2 (glyr1 and glyr2) are considered to be involved in detoxifying harmful aldehydes, thereby preserving plant health during exposure to various abiotic stresses. phylogenetic analysis revealed that the two glyr isoforms appeared in the plant lineage prior to the divergence of the chlorophyta and streptophyta, which occurred approximately 750 million years ago. green fluorescent protein fusions of apple (malus x domestica bork ...201728484477
plant glyoxylate/succinic semialdehyde reductases: comparative biochemical properties, function during chilling stress, and subcellular localization.plant nadph-dependent glyoxylate/succinic semialdehyde reductases 1 and 2 (cytosolic glyr1 and plastidial/mitochondrial glyr2) are considered to be of particular importance under abiotic stress conditions. here, the apple (malus × domestica borkh.) and rice (oryza sativa l.) glyr1s and glyr2s were characterized and their kinetic properties were compared to those of previously characterized glyrs from arabidopsis thaliana [l.] heynh. the purified recombinant glyrs had an affinity for glyoxylate a ...201728855911
identification and characterization of the diverse stress-responsive r2r3-rmyb transcription factor from hibiscus sabdariffa l.various regulatory proteins play a fundamental role to manage the healthy plant growth under stress conditions. differential display reverse transcriptase pcr and random amplification of cdna ends (race) was used to explore the osmotic stress-responsive transcripts. we identified and characterized the salt stress-responsive r2r3 type rmyb transcription factor from hibiscus sabdariffa which has an open reading frame of 690 bp, encoding 229 long chain amino acids. in silico analysis confirmed the ...201729181384
genetic variation and host-parasite specificity of striga resistance and tolerance in rice: the need for predictive breeding.the parasitic weeds striga asiatica and striga hermonthica cause devastating yield losses to upland rice in africa. little is known about genetic variation in host resistance and tolerance across rice genotypes, in relation to virulence differences across striga species and ecotypes. diverse rice genotypes were phenotyped for the above traits in s. asiatica- (tanzania) and s. hermonthica-infested fields (kenya and uganda) and under controlled conditions. new rice genotypes with either ecotype-sp ...201728191641
variation in the abundance of oshak1 transcript underlies the differential salinity tolerance of an indica and a japonica rice cultivar.salinity imposes a major constraint over the productivity of rice. a set of chromosome segment substitution lines (cssls), derived from a cross between the japonica type cultivar (cv.) nipponbare (salinity sensitive) and the indica type cv. 9311 (moderately tolerant), was scored using a hydroponics system for their salinity tolerance at the seedling stage. two of the cssls, which share a ∼1.2 mbp stretch of chromosome 4 derived from cv. nipponbare, were as sensitive to the stress as cv. nipponba ...201729354152
genome-wide association study of seed dormancy and the genomic consequences of improvement footprints in rice (oryza sativa l.).seed dormancy is an important agronomic trait affecting grain yield and quality because of pre-harvest germination and is influenced by both environmental and genetic factors. however, our knowledge of the factors controlling seed dormancy remains limited. to better reveal the molecular mechanism underlying this trait, a genome-wide association study was conducted in an indica-only population consisting of 453 accessions genotyped using 5,291 snps. nine known and new significant snps were identi ...201729354150
disruption of ossec3a increases the content of salicylic acid and induces plant defense responses in rice.the exocyst, an evolutionarily conserved octameric protein complex involved in exocytosis, has been reported to be involved in diverse aspects of morphogenesis in arabidopsis. however, the molecular functions of such exocytotic molecules in rice are poorly understood. here, we examined the molecular function of ossec3a, an important subunit of the exocyst complex in rice. the ossec3a gene is expressed in various organs, and ossec3a has the potential ability to participate in the exocyst complex ...201729300985
proteome-wide lysine acetylation identification in developing rice (oryza sativa) seeds and protein co-modification by acetylation, succinylation, ubiquitination, and phosphorylation.protein lysine acetylation is a highly conserved post-translational modification with various biological functions. however, only a limited number of acetylation sites have been reported in plants, especially in cereals, and the function of non-histone protein acetylation is still largely unknown. in this report, we identified 1003 lysine acetylation sites in 692 proteins of developing rice seeds, which greatly extended the number of known acetylated sites in plants. seven distinguished motifs w ...201729313810
ospt4 contributes to arsenate uptake and transport in rice.arsenic (as) is toxic to organisms, and elevated as accumulation in rice (oryza sativa) grain may pose a significant health risk to humans. the predominant form of as in soil under aerobic conditions is as(v), which has a chemical structure similar to that of po43-. rice roots take up as(v) by phosphate (pi) transporters, such as ospt1 and ospt8. in the present study, we investigated the contribution of ospt4, belonging to the pht1 family, on rice as(v) uptake and transport. we determined the mr ...201729312424
identification and map-based cloning of the light-induced lesion mimic mutant 1 (lil1) gene in rice.the hypersensitive response (hr) is a mechanism by which plants prevent the spread of pathogen. despite extensive study, the molecular mechanisms underlying hr remain poorly understood. lesion mimic mutants (lmms), such as lil1 that was identified in an ethylmethane sulfonate mutagenized population of indica rice (oryza sativa l. ssp. indica) 93-11, can be used to study the hr. under natural field conditions, the leaves of lil1 mutant plants exhibited light-induced, small, rust-red lesions that ...201729312386
favorable marker alleles for panicle exsertion length in rice (oryza sativa l.) mined by association mapping and the rstep-lrt method.the panicle exsertion length (pel) in rice (oryza sativa l.) is an important trait for hybrid seed production. we investigated the pel in a chromosome segment substitution line (cssl) population consisting of 66 lines and a natural population composed of 540 varieties. in the cssl population, a total of seven qtls for pel were detected across two environments. the percentage of phenotypic variance explained (pve) ranged from 10.22 to 50.18%, and the additive effect ranged from -1.77 to 6.47 cm. ...201729312380
oryza sativa salt-induced ring e3 ligase 2 (ossirp2) acts as a positive regulator of transketolase in plant response to salinity and osmotic stress.a rice gene (ossirp2) encoding the ring ub e3 ligase was highly induced under salinity stress and physically interacted with a transketolase (ostkl1). overexpression of ossirp2 conferred salinity and osmotic stress tolerance in plants. the ring e3 ligases play a vital role in post transitional modification through ubiquitination-mediated protein degradation that mediate plants responses during abiotic stresses and signal transduction. in this study, we report an oryza sativa salt induced really ...201729285618
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