Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
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| lack of cytosolic glutamine synthetase1;2 activity reduces nitrogen-dependent biosynthesis of cytokinin required for axillary bud outgrowth in rice seedlings. | a mutation abolishing cytosolic glutamine synthetase1;2 (gs1;2) activity impairs assimilation of ammonium into glutamine in both roots and basal portions of shoots, and severely decreases axillary bud outgrowth (tillering) in mutant rice seedlings. although the gs1;2 mutant phenotype is independent of strigolactone, which inhibits tillering, it also demonstrates glutamine- or related metabolite-responsive biosynthesis of cytokinin (ck), which promotes tillering. here, we examined the connection ... | 2017 | 28186255 |
| changes in root hydraulic conductivity facilitate the overall hydraulic response of rice (oryza sativa l.) cultivars to salt and osmotic stress. | the aim of the present work was to assess the significance of changes in root aqp gene expression and hydraulic conductivity (lp) in the regulation of water balance in two hydroponically-grown rice cultivars (azucena, bala) which differ in root morphology, stomatal regulation and aquaporin (aqp) isoform expression. plants were exposed to nacl (25 mm, 50 mm) and osmotic stress (5%, 10% peg6000). root lp was determined for exuding root systems (osmotic forces driving water uptake; 'exudation lp') ... | 2017 | 28189051 |
| 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 ... | 2017 | 28191641 |
| genome inside genome: ngs based identification and assembly of endophytic sphingopyxis granuli and pseudomonas aeruginosa genomes from rice genomic reads. | the interactions between crop plants and the endophytic bacteria colonizing them are poorly understood and experimental methods were found to be inadequate to meet the complexities associated with the interaction. moreover, research on endophytic bacteria was focused at host plant species level and not at cultivar level which is essential for understanding the role played by them on the productivity of specific crop genotype. high throughput genomics offers valuable tools for identification, cha ... | 2017 | 28192179 |
| analysis of plant udp-arabinopyranose mutase (uam): role of divalent metals and structure prediction. | udp-arabinopyranose mutase (uam) is a plant enzyme which interconverts udp-arabinopyranose (udp-arap; a six-membered sugar) to udp-arabinofuranose (udp-araf; a five-membered sugar). plant mutases belong to a small gene family called reversibly glycosylated proteins (rgps). so far, uam has been identified in oryza sativa (rice), arabidopsis thaliana and hordeum vulgare (barley). the enzyme requires divalent metal ions for catalytic activity. here, the divalent metal ion dependency of uams from o. ... | 2017 | 28192204 |
| genome-wide characterization of jasmonate-zim domain transcription repressors in wheat (triticum aestivum l.). | the jasmonate-zim domain (jaz) repressor family proteins are jasmonate co-receptors and transcriptional repressor in jasmonic acid (ja) signaling pathway, and they play important roles in regulating the growth and development of plants. recently, more and more researches on jaz gene family are reported in many plants. although the genome sequencing of common wheat (triticum aestivum l.) and its relatives is complete, our knowledge about this gene family remains vacant. | 2017 | 28193162 |
| fine mapping of carbon assimilation rate 8, a quantitative trait locus for flag leaf nitrogen content, stomatal conductance and photosynthesis in rice. | increasing the rate of leaf photosynthesis is one important approach for increasing grain yield in rice (oryza sativa). exploiting the natural variation in co2 assimilation rate (a) between rice cultivars using quantitative genetics is one promising means to identify genes contributing to higher photosynthesis. in this study, we determined precise location of carbon assimilation rate 8 (car8) by crossing a high-yielding indica cultivar with a japanese commercial cultivar. fine mapping suggested ... | 2017 | 28197156 |
| isolation, characterization and transcriptome analysis of a cytokinin receptor mutant osckt1 in rice. | cytokinins play important roles in regulating plant development, including shoot and root meristems, leaf longevity, and grain yield. however, the in planta functions of rice cytokinin receptors have not been genetically characterized yet. here we isolated a rice mutant, osckt1, with enhanced tolerance to cytokinin treatment. further analysis showed that osckt1 was insensitive to aromatic cytokinins but responded normally to isoprenoid and phenylurea-type cytokinins. map-based cloning revealed t ... | 2017 | 28197164 |
| toxicity of pesticide tank mixtures from rice crops against telenomus podisi ashmead (hymenoptera: platygastridae). | the use of insecticides, herbicides, and fungicides commonly occurs in mixtures in tanks in order to control phytosanitary problems in crops. however, there is no information regarding the effects of these mixtures on non-target organisms associated to the rice agroecosystem. the aim of this study was to know the toxicity of pesticide tank mixtures from rice crops against telenomus podisi ashmead (hymenoptera: platygastridae). based on the methods adapted from the international organisation for ... | 2017 | 28197851 |
| spl33, encoding an eef1a-like protein, negatively regulates cell death and defense responses in rice. | lesion-mimic mutants are useful to dissect programmed cell death and defense-related pathways in plants. here we identified a new rice lesion-mimic mutant, spotted leaf 33 (spl33) and cloned the causal gene by a map-based cloning strategy. spl33 encodes a eukaryotic translation elongation factor 1 alpha (eef1a)-like protein consisting of a non-functional zinc finger domain and three functional ef-tu domains. spl33 exhibited programmed cell death-mediated cell death and early leaf senescence, as ... | 2017 | 28199670 |
| cyclic electron flow may provide some protection against psii photoinhibition in rice (oryza sativa l.) leaves under heat stress. | previously we have shown that a quick down-regulation in psi activity compares to that of psii following short-term heat stress for two rice groups including c4023 and q4149, studied herein. these accessions were identified to have different natural capacities in driving cyclic electron flow (cef) around psi; i.e., low cef (lcef) and high cef (hcef) for c4023 and q4149, respectively. the aim of this study was to investigate whether these two lines have different mechanisms of protecting photosys ... | 2017 | 28199904 |
| enzymatic properties of a gh19 chitinase isolated from rice lacking a major loop structure involved in chitin binding. | the catalytic domains of family gh19 chitinases have been found to consist of a conserved, α-helical core-region and different numbers (1-6) of loop structures, located at both ends of the substrate-binding groove and which extend over the glycon- and aglycon-binding sites. we expressed, purified and enzymatically characterized a gh19 chitinase from rice, oryza sativa l. cv. nipponbare (oschia2a), lacking a major loop structure (loop iii) connected to the functionally important β-stranded region ... | 2017 | 28204489 |
| genetic factors underlying boron toxicity tolerance in rice: genome-wide association study and transcriptomic analysis. | boron (b) toxicity is a nutritional disorder affecting crop production in many parts of the world. this study explored genetic factors associated with b tolerance in rice (oryza sativa l.) through an integrated genome mapping and transcriptomic approach. variation in b tolerance was first evaluated by screening a panel of 137 indica genotypes in b toxic conditions (+2 mm b), followed by genome-wide association study (gwas). leaf bronzing and greenness were significantly correlated with shoot and ... | 2017 | 28204664 |
| bionano genome map resource for oryza sativa ssp. japonica and indica and its application in rice genome sequence correction and gap filling. | 2017 | 28212831 | |
| effect of chemical amendments on remediation of potentially toxic trace elements (ptes) and soil quality improvement in paddy fields. | remediation of potentially toxic trace elements (ptes) in paddy fields is fundamental for crop safety. in situ application of chemical amendments has been widely adapted because of its cost-effectiveness and environmental safety. the main purpose of this research was to (1) evaluate the reduction in dissolved concentrations of cadmium (cd) and arsenic (as) with the application of chemical amendments and (2) monitor microbial activity in the soil to determine the remediation efficiency. three dif ... | 2017 | 28213721 |
| 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 ... | 2017 | 28217135 |
| 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 ... | 2017 | 28218979 |
| 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 ... | 2017 | 28220138 |
| the dnaj protein osdja6 negatively regulates rice innate immunity to the blast fungus magnaporthe oryzae. | rice blast, caused by magnaporthe oryzae (synonym: pyricularia oryzae), severely reduces rice production and grain quality. the molecular mechanism of rice resistance to m. oryzae is not fully understood. in this study, we identified a chaperone dnaj protein, osdja6, which is involved in basal resistance to m. oryzae in rice. the osdja6 protein is distributed in the entire rice cell. the expression of osdja6 is significantly induced in rice after infection with a compatible isolate. silencing of ... | 2017 | 28220688 |
| 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 ... | 2017 | 28224643 |
| posnar2.1:osnar2.1 expression enhances nitrogen uptake efficiency and grain yield in transgenic rice plants. | the nitrate (no3-) transporter has been selected as an important gene maker in the process of environmental adoption in rice cultivars. in this work, we transferred another native osnar2.1 promoter with driving osnar2.1 gene into rice plants. the transgenic lines with exogenous posnar2.1:osnar2.1 constructs showed enhanced osnar2.1 expression level, compared with wild type (wt), and 15 n influx in roots increased 21%-32% in response to 0.2 mm and 2.5 mm 15no3- and 1.25 mm 15 nh415 no3 . under th ... | 2017 | 28226420 |
| genome-wide single-nucleotide polymorphisms in cms and restorer lines discovered by genotyping using sequencing and association with marker-combining ability for 12 yield-related traits in oryza sativa l. subsp. japonica. | heterosis or hybrid vigor is closely related with general combing ability (gca) of parents and special combining ability (sca) of combinations. the evaluation of gca and sca facilitate selection of parents and combinations in heterosis breeding. in order to improve combining ability (ca) by molecular marker assist selection, it is necessary to identify marker loci associated with the ca. to identify the single nucleotide polymorphisms (snp) loci associated with ca in the parental genomes of japo ... | 2017 | 28228768 |
| osnla1, a ring-type ubiquitin ligase, maintains phosphate homeostasis in oryza sativa via degradation of phosphate transporters. | inorganic phosphate (pi) transporters (pts) play vital roles in pi uptake and translocation in plants. under pi sufficient conditions, pts are degraded to prevent excess pi accumulation. the mechanisms targeting pts for degradation are not fully elucidated. in this study, we found that the oryza sativa (rice) ortholog of arabidopsis thaliana nitrogen limitation adaptation (nla), osnla1 protein, a ring-type e3 ubiquitin-ligase, was predominantly localized in the plasma membrane, and could interac ... | 2017 | 28229491 |
| volatile composition of smoked and non-smoked iranian rice. | in this work, the volatile profiles of smoked and non-smoked iranian rice were identified, and their relative abundance was calculated and compared. headspace solid-phase microextraction together with gas chromatography-mass spectrometry (spme-gc-ms) were used to extract and identify the volatile compounds. the main groups of volatiles in iranian rice were aldehydes, ketones, phenol derivatives, furans, linear hydrocarbons, esters and terpenes. the chemical family aldehydes was the most abundant ... | 2016 | 28231176 |
| 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 ... | 2017 | 28231382 |
| mechanisms of fe biofortification and mitigation of cd accumulation in rice (oryza sativa l.) grown hydroponically with fe chelate fertilization. | cadmium contaminated rice from china has become a global food safety issue. some research has suggested that chelate addition to substrates can affect metal speciation and plant metal content. we investigated the mitigation of cd accumulation in hydroponically-grown rice supplied with edtana2fe(ii) or eddhafe(iii). a japonica rice variety (nipponbare) was grown in modified kimura b solution containing three concentrations (0, 10, 100 μμ) of the iron chelates edtana2fe(ii) or eddhafe(iii) and 1 μ ... | 2017 | 28232138 |
| pyricularia graminis-tritici, a new pyricularia species causing wheat blast. | pyricularia oryzae is a species complex that causes blast disease on more than 50 species of poaceous plants. pyricularia oryzae has a worldwide distribution as a rice pathogen and in the last 30 years emerged as an important wheat pathogen in southern brazil. we conducted phylogenetic analyses using 10 housekeeping loci for 128 isolates of p. oryzae sampled from sympatric populations of wheat, rice, and grasses growing in or near wheat fields. phylogenetic analyses grouped the isolates into thr ... | 2016 | 28232765 |
| altered expression profiles of microrna families during de-etiolation of maize and rice leaves. | micrornas (mirnas) are highly conserved small non-coding rnas that play important regulatory roles in plants. although many mirna families are sequentially and functionally conserved across plant kingdoms (dezulian et al. in genome biol 13, 2005), they still differ in many aspects such as family size, average length, genomic loci etc. (unver et al. in int j plant genomics, 2009). | 2017 | 28235420 |
| spatial imaging and speciation of cu in rice (oryza sativa l.) roots using synchrotron-based x-ray microfluorescence and x-ray absorption spectroscopy. | knowledge of elemental localization and speciation in rice (oryza sativa l.) roots is crucial for elucidating the mechanisms of cu accumulation so as to facilitate the development of strategies to inhibit cu accumulation in rice grain grown in contaminated soils. using synchrotron-based x-ray microfluorescence and x-ray absorption spectroscopy, we investigated the distribution patterns and speciation of cu in rice roots treated with 50 μm cu for 7 days. a clear preferential localization of cu in ... | 2017 | 28235745 |
| 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 ... | 2017 | 28238052 |
| molecular structure and physicochemical properties of starches from rice with different amylose contents resulting from modification of osgbssi activity. | osgbssi, encoded by the waxy (wx) gene, is the key enzyme in the synthesis of amylose chains. transgenic rice lines with various gbssi activities were previously developed via site-directed mutagenesis of the wx gene in the glutinous cultivar guanglingxiangnuo (glxn). in this study, grain morphology, molecular structure, and physicochemical properties were investigated in four transgenic lines with modified osgbssi activity and differences in amylose content. a milky opaque appearance was observ ... | 2017 | 28241110 |
| simultaneous profiling of lysoglycerophospholipids in rice (oryza sativa l.) using direct infusion-tandem mass spectrometry with multiple reaction monitoring. | white rice is the final product after the hull and bran layers have been removed during the milling process. although lysoglycerophospholipids (lysogpls) only occupy a small proportion in white rice, they are essential for evaluating rice authenticity and quality. in this study, we developed a high-throughput and targeted lipidomics approach that involved direct infusion-tandem mass spectrometry with multiple reaction monitoring to simultaneously profile lysogpls in white rice. the method is cap ... | 2017 | 28245645 |
| gene expression and plant hormone levels in two contrasting rice genotypes responding to brown planthopper infestation. | the brown planthopper (bph; nilaparvata lugens stål) is a destructive piercing-sucking insect pest of rice. the plant hormones salicylic acid (sa) and jasmonic acid (ja) play important roles in plant-pest interactions. many isolated rice genes that modulate bph resistance are involved in the metabolism or signaling pathways of sa, ja and ethylene. 'rathu heenati' (rh) is a rice cultivar with a high-level, broad-spectrum resistance to all bph biotypes. here, rh was used as the research material, ... | 2017 | 28245796 |
| tsv, a putative plastidic oxidoreductase, protects rice chloroplasts from cold stress during development by interacting with plastidic thioredoxin z. | rice is vulnerable to cold stress. seedlings are very sensitive to cold stress and this harms global rice production. the effects of cold on chloroplast development are well known, but little is known about the underlying molecular mechanisms. here, we isolated a temperature-sensitive virescent (tsv) mutant that is extremely sensitive to cold stress. it displayed defective chloroplasts, decreased chlorophyll and zero survivorship under cold stress. we isolated and identified tsv by map-based clo ... | 2017 | 28248438 |
| hybrid weakness in a rice interspecific hybrid is nitrogen-dependent, and accompanied by changes in gene expression at both total transcript level and parental allele partitioning. | hybrid weakness, a phenomenon opposite to heterosis, refers to inferior growth and development in a hybrid relative to its pure-line parents. little attention has been paid to the phenomenological or mechanistic aspect of hybrid weakness, probably due to its rare occurrence. | 2017 | 28248994 |
| mitochondrial abc transporter atm3 is essential for cytosolic iron-sulfur cluster assembly. | the mitochondrial atp-binding cassette transporter atm3 has been studied in arabidopsis. its function, however, is poorly understood in other model plant species. this study reports that the atm3 is required for cytosolic iron-sulfur cluster assembly and is essential for meristem maintenance in rice (oryza sativa). the loss of function of osatm3 is lethal in rice at the four-leaf stage. in the osatm3 t-dna insertion mutant, the fourth leaf fails to develop and the lateral roots are short. cytoso ... | 2017 | 28250070 |
| physiological performance of two contrasting rice varieties under water stress. | two rice varieties pr-115 and super-7 were imposed to water stress and different physiological traits were monitored to evaluate the performance of these varieties under drought. under water stress condition although the relative water content, osmotic potential, chlorophyll content, photosynthesis rate, carbon discrimination and biomass decreased in both the varieties however, the reduction was more pronounced in super-7 variety. oryzanol a trans-ester of ferulic acid functions as antioxidant a ... | 2017 | 28250586 |
| characterization of a disease susceptibility locus for exploring an efficient way to improve rice resistance against bacterial blight. | bacterial blight caused by xanthomonas oryzae pv. oryzae (xoo) is the most harmful bacterial disease of rice worldwide. previously, we characterized major disease resistance (mr) gene xa25, which confers race-specific resistance to xoo strain pxo339. the xa25 is a recessive allele of the sweet13 locus, but sweet13's interaction with pxo339 and how efficiently using this locus for rice breeding still need to be defined. here we show that the sweet13 allele from rice zhenshan 97 is a susceptibilit ... | 2017 | 28251460 |
| the important functionality of 14-3-3 isoforms in rice roots revealed by affinity chromatography. | plant 14-3-3 proteins belong to a large family of proteins involved in numerous physiological processes, and function by binding to phosphorylated client proteins to regulate their function. however, little is known about their regulatory mechanisms in rice root growth. in this study, four 14-3-3 isoforms (gf14b, gf14c, gf14e, gf14f) exhibiting prominent expression profiles in rice roots, were selected for further investigation. through a pull-down assay using four 14-3-3 isoforms in rice roots, ... | 2017 | 28254371 |
| is early morning flowering an effective trait to minimize heat stress damage during flowering in rice? | higher spikelet sterility due to heat stress exposure during flowering in rice is becoming a major threat for sustaining productivity in tropical and sub-tropical regions. therefore, exploiting and incorporating early morning flowering (emf) trait into ongoing breeding pipelines could be an effective strategy to minimize the damage. in this study, we have focused on quantifying the time of day of flowering traits such as first spikelet opening time (fsot) and peak spikelet opening time (psot) in ... | 2017 | 28260830 |
| aluminum enhances growth and sugar concentration, alters macronutrient status and regulates the expression of nac transcription factors in rice. | aluminum (al) is a beneficial element for some plant species, especially when used at low concentrations. though some transcription factors are induced by exposure to this element, no data indicate that al regulates the expression of nac genes in rice. in this study we tested the effect of applying 200 μm al on growth, chlorophyll, amino acids, sugars, macronutrient concentration and regulation of nac transcription factors gene expression in 24-day-old plants of four rice (oryza sativa ssp. indi ... | 2017 | 28261224 |
| transcript profiling reveals the presence of abiotic stress and developmental stage specific ascorbate oxidase genes in plants. | abiotic stress and climate change is the major concern for plant growth and crop yield. abiotic stresses lead to enhanced accumulation of reactive oxygen species (ros) consequently resulting in cellular damage and major losses in crop yield. one of the major scavengers of ros is ascorbate (aa) which acts as first line of defense against external oxidants. an enzyme named ascorbate oxidase (aao) is known to oxidize aa and deleteriously affect the plant system in response to stress. genome-wide an ... | 2017 | 28261251 |
| transposon-mediated epigenetic regulation contributes to phenotypic diversity and environmental adaptation in rice. | transposable elements (tes) have long been regarded as 'selfish dna', and are generally silenced by epigenetic mechanisms. however, work in the past decade has identified positive roles for tes in generating genomic novelty and diversity in plants. in particular, recent studies suggested that te-induced epigenetic alterations and modification of gene expression contribute to phenotypic variation and adaptation to geography or stress. these findings have led many to regard tes, not as junk dna, b ... | 2017 | 28273484 |
| harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (oryza sativa l.). | to develop superior rice varieties with improved yield in most rainfed areas of asia/africa, we started an introgression-breeding program for simultaneously improving yield and tolerances of multiple abiotic stresses. using eight bc1 populations derived from a widely adaptable recipient and eight donors plus three rounds of phenotypic selection, we developed 496 introgression lines (ils) with significantly higher yield under drought, salt and/or non-stress conditions in 5 years. six new varietie ... | 2017 | 28278154 |
| evaluating korean rice genotypes and landraces for octacosanol contents and antioxidant activity. | increase in the average life span and interest in correlation between food and human health have led to researches to find and utilise the functional materials in rice. octacosanol in rice grain is well known for its potential benefit. this study was conducted to evaluate the korean rice (oryza sativa l.) genotypes and landraces for octacosanol contents and antioxidant activity. octacosanol contents in 223 cultivars of korean rice ranged from 0.78 to 6.06 mg 100 g-1. thirteen genotypes and landr ... | 2017 | 28278625 |
| genetic architecture of cold tolerance in rice (oryza sativa) determined through high resolution genome-wide analysis. | cold temperature is an important abiotic stress which negatively affects morphological development and seed production in rice (oryza sativa l.). at the seedling stage, cold stress causes poor germination, seedling injury and poor stand establishment; and at the reproductive stage cold decreases seed yield. the rice diversity panel 1 (rdp1) is a global collection of over 400 o. sativa accessions representing the five major subpopulations from the indica and japonica varietal groups, with a genot ... | 2017 | 28282385 |
| high temperature effects on pi54 conferred resistance to magnaporthe oryzae in two genetic backgrounds of oryza sativa. | the global temperatures are predicted to rise due to climate change. however, knowledge on the mechanisms underlying the effect of high temperature (ht) on plant pathogen interaction is limited. we investigated the effect of elevated temperature on host phenotypic, biochemical and gene expression patterns in the rice-magnaporthe oryzae (mo) pathosystem using two genetic backgrounds, co39 (oryzae sativa-indica) and lth (o. sativa-japonica) with (co and lt) and without (co39 and lth) r gene (pi54) ... | 2017 | 28282527 |
| spatio-temporal dynamics in global rice gene expression (oryza sativa l.) in response to high ammonium stress. | ammonium (nh4+) is the predominant nitrogen (n) source in many natural and agricultural ecosystems, including flooded rice fields. while rice is known as an nh4+-tolerant species, it nevertheless suffers nh4+ toxicity at elevated soil concentrations. nh4+ excess rapidly leads to the disturbance of various physiological processes that ultimately inhibit shoot and root growth. however, the global transcriptomic response to nh4+ stress in rice has not been examined. in this study, we mapped the spa ... | 2017 | 28282528 |
| identification of alternatively spliced transcripts of rice phytochelatin synthase 2 gene ospcs2 involved in mitigation of cadmium and arsenic stresses. | the ospcs2 exhibits root- and shoot-specific differential ratios of alternatively spliced transcripts in indica rice under cd stress, and plays role in cd and as stress tolerance and accumulation. enzymatic activity of phytochelatin synthase (pcs) in plant produces phytochelatins, which help in sequestration of heavy metal(loid)s inside the cell vacuole to alleviate toxicity. here we report that among the two pcs genes-ospcs1 and ospcs2 in indica rice (oryza sativa) cultivar, the ospcs2 produces ... | 2017 | 28283922 |
| effect of silicon fertilizers on cadmium in rice (oryza sativa) tissue at tillering stage. | silicon has been found to enhance the plants' tolerance to heavy metal stress. in a field study, the effect of different types of si-rich soil amendments (slag, ground slag, and diatomaceous earth) and fertilizers (activated slag, ground activated slag, and commercial si fertilizer) on the distribution of soluble and insoluble forms of cd in the rice plant organs grown on long-term cultivated paddy soil contaminated with cd (central part of hunan province, china) was investigated. the soluble si ... | 2017 | 28283985 |
| metagenome analysis of the root endophytic microbial community of indian rice (o. sativa l.). | this study reports the root endophytic microbial community profile in rice (oryza sativa l.), the largest food crop of asia, using 16s rrna gene amplicon sequencing. metagenome of os01 and os04 consisted of 11,17,900 sequences with 300 mbp size and average 55.6% g + c content. data of this study are available at ncbi bioproject (prjna360379). the taxonomic analysis of 843 otu's showed that the sequences belonged to four major phyla revealing dominance of proteobacteria, firmicutes, cyanobacteria ... | 2017 | 28289604 |
| effects of silicon on oryza sativa l. seedling roots under simulated acid rain stress. | silicon (si) has an important function in reducing the damage of environmental stress on plants. acid rain is a serious abiotic stress factor, and si can alleviate the stress induced by acid rain on plants. based on these assumptions, we investigated the effects of silicon on the growth, root phenotype, mineral element contents, hydrogen peroxide (h2o2) and antioxidative enzymes of rice (oryza sativa l.) seedling roots under simulated acid rain (sar) stress. the results showed that the combined ... | 2017 | 28291806 |
| transcription factor osdof18 controls ammonium uptake by inducing ammonium transporters in rice roots. | nitrogen is one of the most important mineral elements for plant growth. we studied the functional roles of oryza sativa dna binding with one finger 18 (osdof18) in controlling ammonium uptake. the growth of null mutants of osdof18 was retarded in a medium containing ammonium as the sole nitrogen source. in contrast, those mutants grew normally in a medium with nitrate as the sole nitrogen source. the gene expression was induced by ammonium but not by nitrate. uptake of ammonium was lower in osd ... | 2017 | 28292004 |
| production of bp178, a derivative of the synthetic antibacterial peptide bp100, in the rice seed endosperm. | bp178 peptide is a synthetic bp100-magainin derivative possessing strong inhibitory activity against plant pathogenic bacteria, offering a great potential for future applications in plant protection and other fields. here we report the production and recovery of a bioactive bp178 peptide using rice seeds as biofactories. | 2017 | 28292258 |
| abnormal inflorescence meristem1 functions in salicylic acid biosynthesis to maintain proper reactive oxygen species levels for root meristem activity in rice. | root meristem activity determines root growth and root architecture and consequently affects water and nutrient uptake in plants. however, our knowledge about the regulation of root meristem activity in crop plants is very limited. here, we report the isolation and characterization of a short root mutant in rice (oryza sativa) with reduced root meristem activity. this root growth defect is caused by a mutation in abnormal inflorescence meristem1 (aim1), which encodes a 3-hydroxyacyl-coa dehydrog ... | 2017 | 28298519 |
| tissue-specific ubiquitination by ipa1 interacting protein1 modulates ipa1 protein levels to regulate plant architecture in rice. | plant architecture, a collection of genetically controlled agronomic traits, is one of the decisive factors that determine grain production. ideal plant architecture1 (ipa1) encodes a key transcription factor with pleiotropic effects on regulating plant architecture in rice (oryza sativa), and ipa1 expression is controlled at the posttranscriptional level by microrna156 and microrna529. here, we report the identification and characterization of ipa1 interacting protein1 (ipi1), a ring-finger e3 ... | 2017 | 28298520 |
| arsenic transport in rice and biological solutions to reduce arsenic risk from rice. | rice (oryza sativa l.) feeds ∼3 billion people. due to the wide occurrence of arsenic (as) pollution in paddy soils and its efficient plant uptake, as in rice grains presents health risks. genetic manipulation may offer an effective approach to reduce as accumulation in rice grains. the genetics of as uptake and metabolism have been elucidated and target genes have been identified for genetic engineering to reduce as accumulation in grains. key processes controlling as in grains include as uptak ... | 2017 | 28298917 |
| examining two sets of introgression lines reveals background-independent and stably expressed qtl that improve grain appearance quality in rice (oryza sativa l.). | a novel qtl cluster for appearance quality on chr07 was identified using reciprocal introgression populations in different locations in china. two secondary f 2 populations validated qtl with significant effect on appearance quality. appearance quality (aq) is the main determinants of market value of rice. identification of qtl affecting aq is the prerequisite for efficient improvement of aq through marker-assisted selection (mas). two sets of reciprocal introgression lines derived from indica m ... | 2017 | 28299373 |
| molecular dissection of the response of the rice systemic acquired resistance deficient 1 (sard1) gene to different types of ionizing radiation. | exposure to ionizing radiation induces plant defenses by regulating the expression of response genes. the systemic acquired resistance deficient 1 (sard1) is a key gene in plant defense response. in this study, the function of oryza sativa sard1 (ossard1) was investigated after exposure of seeds/plants to ionizing radiation, jasmonic acid (ja) or salicylic acid (sa). | 2017 | 28299960 |
| response of alternative splice isoforms of osrad9 gene from oryza sativa to environmental stress. | rad9 protein plays an important role in cell-cycle checkpoint signal transduction in human and yeast cells, but knowledge about rad9 in plants is limited. this study reports that the rad9 gene of rice can generate the transcript products osrad9.1 and osrad9.2 through alternative splicing. osrad9.1, with all nine exons, is the main cell-cycle checkpoint protein involved in the response of rice to genotoxic stresses (ultraviolet radiation and antibiotic stress), environmental stresses (drought, sa ... | 2017 | 28301324 |
| functional characterization of endophytic fungal community associated with oryza sativa l. and zea mays l. | in a natural ecosystem, the plant is in a symbiotic relationship with beneficial endophytes contributing huge impact on its host plant. therefore, exploring beneficial endophytes and understanding its interaction is a prospective area of research. the present work aims to characterize the fungal endophytic communities associated with healthy maize and rice plants and to study the deterministic factors influencing plant growth and biocontrol properties against phytopathogens, viz, pythium ultimum ... | 2017 | 28303127 |
| qtl hotspots for early vigor and related traits under dry direct-seeded system in rice (oryza sativa l.). | strong seedling vigor is desirable trait in dry direct-seeded rice (dsr) for enhancing crop establishment and the ability to compete against weeds. a set of 253 bc3f4 lines derived from cross between swarna and moroberekan was phenotyped for early vigor (ev) and 8 related traits viz., early uniform emergence (eue), shoot length (shl), stem length (sl), shoot fresh weight (sfw), total fresh weight (tfw), shoot dry weight (sdw), total dry weight (tdw), and root dry weight (rdw). composite interval ... | 2017 | 28303149 |
| silicon alleviates simulated acid rain stress of oryza sativa l. seedlings by adjusting physiology activity and mineral nutrients. | silicon (si) has been a modulator in plants under abiotic stresses, such as acid rain. to understand how silicon made an effect on rice (oryza sativa l.) exposed to simulated acid rain (sar) stress, the growth, physiologic activity, and mineral nutrient content in leaves of rice were investigated. the results showed that combined treatments with si (1.0, 2.0, or 4.0 mm) and sar (ph 4.0, 3.0, or 2.0) obviously improved the rice growth compared with the single treatment with sar. incorporation of ... | 2017 | 28303353 |
| cadmium adsorption, chelation and compartmentalization limit root-to-shoot translocation of cadmium in rice (oryza sativa l.). | strategies to reduce cadmium (cd) in rice grain, below concentrations that represent serious human health concerns, require that the mechanisms of cd distribution and accumulation within rice plants be established. here, a comprehensive hydroponic experiment was performed to investigate the differences in the cd uptake, chelation and compartmentalization between high (d83b) and low (d62b) cd-accumulation cultivars contrasting in cd accumulation in order to establish the roles of these processes ... | 2017 | 28303536 |
| patterns of light and nitrogen distribution in relation to whole canopy carbon gain in c3 and c4 mono- and dicotyledonous species. | an analytical model was used to describe the optimal nitrogen distribution. from this model, it was hypothesized that the non-uniformity of the nitrogen distribution increases with the canopy extinction rate for light and the total amount of free nitrogen in the canopy, and that it is independent of the slope of the relation between light saturated photosynthesis (pm) and leaf nitrogen content (nl). these hypotheses were tested experimentally for plants with inherently different architectures an ... | 1995 | 28306967 |
| 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, ... | 2017 | 28315232 |
| rational design of high-yield and superior-quality rice. | rice (oryza sativa l.) is a staple food for more than half of the world's population. to meet the ever-increasing demand for food, because of population growth and improved living standards, world rice production needs to double by 20301. the development of new elite rice varieties with high yield and superior quality is challenging for traditional breeding approaches, and new strategies need to be developed. here, we report the successful development of new elite varieties by pyramiding major g ... | 2017 | 28319055 |
| the small auxin-up rna ossaur45 affects auxin synthesis and transport in rice. | this research is the first to demonstrate that ossaur45 is involved in plant growth though affecting auxin synthesis and transport by repressing osyucca and ospin gene expression in rice. small auxin-up rnas (saurs) comprise a large multigene family and are rapidly activated as part of the primary auxin response in plants. however, little is known about the role of saurs in plant growth and development, especially in monocots. here, we report the biological function of ossaur45 in the model plan ... | 2017 | 28321650 |
| mutations associated with floral organ number in rice. | how floral organ number is specified is an interesting subject and has been intensively studied in arabidopsis thaliana. in rice (oryza sativa l.), mutations associated with floral organ number have been identified. in three mutants of rice, floral organ number 1 (fon1) and the two alleles, floral organ number 2-1 (fon2-1) and floral organ number 2-2 (fon2-2), the floral organs were increased in number centripetally. lodicules, homologous to petals, were rarely affected, and stamens were frequen ... | 1996 | 28321674 |
| genome-wide association analysis tracks bacterial leaf blight resistance loci in rice diverse germplasm. | a range of resistance loci against different races of xanthomonas oryzae pv. oryzae (xoo), the pathogen causing bacterial blight (bb) disease of rice, have been discovered and characterized. several have been deployed in modern varieties, however, due to rapid evolution of xoo, a number have already become ineffective. the continuous "arms race" between xoo and rice makes it imperative to discover new resistance loci to enable durable deployment of multiple resistance genes in modern breeding li ... | 2017 | 28321828 |
| 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 ... | 2017 | 28323300 |
| genome subtraction for the identification of potential antimicrobial targets in xanthomonas oryzae pv. oryzae pxo99a pathogenic to rice. | in pathogenic bacteria, identification of essential proteins which are non-homologous to the host plants represents potential antimicrobial targets. we applied subtractive genomics approach for the identification of novel antimicrobial targets in xanthomonas oryzae pv. oryzae pxo99a, the causative agent of bacterial blight in rice. comparative analysis was performed through blast available with the ncbi. the analysis revealed that 27 essential protein sequences out of 4,988 sequences of x. oryza ... | 2014 | 28324466 |
| growth enhancement of rice (oryza sativa) by phosphate solubilizing gluconacetobacter sp. (mtcc 8368) and burkholderia sp. (mtcc 8369) under greenhouse conditions. | two indigenous rhizospheric phosphate solubilizing isolates psb 12 identified as gluconacetobacter sp. (mtcc 8368) and psb 73 identified as burkholderia sp. (mtcc 8369) were examined for their growth enhancement potential of rice (jyothi ptb 39) under pot culture assays. the results showed significant impact on microbial count and psb population, phosphatase and dehydrogenase activity, available phosphorous in the soil, plant nutrient uptake and yield parameters. gluconacetobacter sp. + rp60 tre ... | 2015 | 28324538 |
| dynamic regulation of auxin response during rice development revealed by newly established hormone biosensor markers. | the hormone auxin is critical for many plant developmental processes. unlike the model eudicot plant arabidopsis (arabidopsis thaliana), auxin distribution and signaling in rice tissues has not been systematically investigated due to the absence of suitable auxin response reporters. in this study we observed the conservation of auxin signaling components between arabidopsis and model monocot crop rice (oryza sativa), and generated complementary types of auxin biosensor constructs, one derived fr ... | 2017 | 28326089 |
| mapping the n-linked glycosites of rice (oryza sativa l.) germinating embryos. | germination is a key event in the angiosperm life cycle. n-glycosylation of proteins is one of the most common post-translational modifications, and has been recognized to be an important regulator of the proteome of the germinating embryo. here, we report the first n-linked glycosites mapping of rice embryos during germination by using a hydrophilic interaction chromatography (hilic) glycopeptides enrichment strategy associated with high accuracy mass spectrometry identification. a total of 242 ... | 2017 | 28328971 |
| optimization of regeneration using differential growth regulators in indica rice cultivars. | paddy is a staple crop and being grown in major parts of india, but similarly it is facing some major challenges like abiotic stresses (drought, salinity, etc.) by which its productivity is greatly affected. de-husked seeds of 21 cultivars of indica rice were cultured onto ms medium for screening of their micropropagation capabilities. all the selected cultivars are being cultivated by farmers of andhra pradesh and rajasthan states of india, these cultivars bear good quality of grain and high yi ... | 2016 | 28330091 |
| assessment of genetic purity in rice (oryza sativa l.) hybrids using microsatellite markers. | the objective of the present study is to detect genetic impurity in the seed lots of cms lines, restorers and hybrids and to identify signature markers to differentiate parents and hybrids through dna-based assays. furthermore, attempts have been made to find out an alternative to grow-out-test, which is very tedious, time consuming and used conventionally for seed genetic purity testing since beginning of quality seed multiplication chain. fifty-one rice-specific sequence tagged microsatellite ... | 2016 | 28330120 |
| roles of plant hormones and anti-apoptosis genes during drought stress in rice (oryza sativa l.). | we previously identified the rice (oryza sativa) senescence-associated gene ossap which encodes a highly conserved protein involved in anti-apoptotic activity. this novel bax suppressor-related gene regulates tolerance to multiple stresses in yeast. here, we show the effects of drought stress on leaf and root tissues of plants over-expressing ossap in relation to the levels of phytohormones, abscisic acid (aba), jasmonic acid (ja), indole-3-carboxylic acid (ica), gibberellic acid (ga3), and zeat ... | 2016 | 28330319 |
| transcriptomic and histological responses of african rice (oryza glaberrima) to meloidogyne graminicola provide new insights into root-knot nematode resistance in monocots. | the root-knot nematode meloidogyne graminicola is responsible for production losses in rice ( oryza sativa ) in asia and latin america. the accession tog5681 of african rice, o. glaberrima , presents improved resistance to several biotic and abiotic factors, including nematodes. the aim of this study was to assess the cytological and molecular mechanisms underlying nematode resistance in this accession. | 2017 | 28334204 |
| population distribution and range expansion of the invasive mexican rice borer (lepidoptera: crambidae) in louisiana. | the mexican rice borer, eoreuma loftini (dyar) (lepidoptera: crambidae), is an invasive pest that was first introduced into southern texas in 1980 and has been expanding its range eastward along the united states gulf coast. the pest attacks rice (oryza sativa l.), sugarcane (saccharum spp.), corn (zea mays l.), and other graminaceous crops, and its establishment in louisiana is expected to have severe economic impacts on crop production. range expansion and population distribution of e. loftini ... | 2017 | 28334259 |
| impact of thiamethoxam seed treatment on growth and yield of rice, oryza sativa. | neonicotinoid seed treatments are widely used in agriculture. in rice, oryza sativa l., in the southern united states, neonicotinoid seed treatments are used to manage early-season populations of the rice water weevil, lissorhoptrus oryzophilus kuschel. in addition to their effects on pests, neonicotinoid seed treatments may benefit crop plants directly by increasing plant growth or altering plant responses to stresses. as part of an effort to assess the overall benefits of thiamethoxam seed tre ... | 2017 | 28334296 |
| molecular interaction between pho2 and gi in rice. | plants are often confronted to nutrient limiting conditions, such as inorganic phosphate (pi) deficiency, resulting in a reduction in growth and yield. pho2, encoding a ubiquitin-conjugating e2 enzyme, is a central component of the pi-starvation response signaling pathway. a yeast-two-hybrid screen using oryza sativa (rice) pho2 as bait, revealed an interaction between ospho2 and osgigantea, a key regulator of flowering time, which was confirmed using bimolecular flourescenec complementation (bi ... | 2017 | 28337762 |
| using an active-optical sensor to develop an optimal ndvi dynamic model for high-yield rice production (yangtze, china). | the successful development of an optimal canopy vegetation index dynamic model for obtaining higher yield can offer a technical approach for real-time and nondestructive diagnosis of rice (oryza sativa l) growth and nitrogen (n) nutrition status. in this study, multiple rice cultivars and n treatments of experimental plots were carried out to obtain: normalized difference vegetation index (ndvi), leaf area index (lai), above-ground dry matter (dm), and grain yield (gy) data. the quantitative rel ... | 2017 | 28338637 |
| molecular mechanisms of flowering under long days and stem growth habit in soybean. | precise timing of flowering is critical to crop adaptation and productivity in a given environment. a number of classical e genes controlling flowering time and maturity have been identified in soybean [glycine max (l.) merr.]. the public availability of the soybean genome sequence has accelerated the identification of orthologues of arabidopsis flowering genes and their functional analysis, and has allowed notable progress towards understanding the molecular mechanisms of flowering in soybean. ... | 2016 | 28338712 |
| an activity-staining method on filtration paper enables high-throughput screening of temperature-sensitive and inactive mutations of rice α-amylase for improvement of rice grain quality. | α-amylase is a starch-hydrolyzing enzyme (ec 3.2.1.1) indispensable for germination of cereal seeds, but it is also expressed during the ripening stage. previous studies demonstrated that the enzyme is activated in developing rice seeds under extremely hot weather and triggers a loss of grain quality by hindering the accumulation of storage starch in the endosperm. since inactive or, preferably, heat-labile α-amylases are preferable for breeding premium rice, we developed a method for rapid scre ... | 2017 | 28339688 |
| osptr7 (osnpf8.1), a putative peptide transporter in rice, is involved in dimethylarsenate accumulation in rice grain. | rice (oryza sativa) is a major dietary source of arsenic (as) for the population consuming rice as their staple food. rice grain contains both inorganic as and methylated as species, especially dimethyarsinate (dma). dma is highly mobile in long-distance translocation in plants, but the underlying mechanism remains unknown. in the present study, we showed that osptr7 (osnpf8.1), a putative peptide transporter in rice, was permeable to dma in xenopus laevis oocytes. transient expression of the os ... | 2017 | 28340032 |
| overexpression of osgata12 regulates chlorophyll content, delays plant senescence and improves rice yield under high density planting. | agronomic traits controlling the formation, architecture and physiology of source and sink organs are main determinants of rice productivity. semi-dwarf rice varieties with low tiller formation but high seed production per panicle and dark green and thick leaves with prolonged source activity are among the desirable traits to further increase the yield potential of rice. here, we report the functional characterization of a zinc finger transcription factor, osgata12, whose overexpression causes i ... | 0 | 28342018 |
| ectopic expression of ossta2 enhances salt stress tolerance in rice. | salt stress can severely reduce crop yields. to understand how rice (oryza sativa) plants respond to this environmental challenge, we investigated the genes involved in conferring salt tolerance by screening t-dna tagging lines and identified ossta2-d (oryza sativa salt tolerance activation 2-dominant). in that line, expression of ossta2 was enhanced by approximately eightfold when compared with the non-transformed wild type (wt). this gene was highly expressed in the callus, roots, and panicles ... | 2017 | 28344585 |
| knox protein osh15 induces grain shattering by repressing lignin biosynthesis genes. | seed shattering is an agronomically important trait. two major domestication factors are responsible for this: qsh1 and sh5. whereas qsh1 functions in cell differentiation in the abscission zone (az), a major role of sh5 is the repression of lignin deposition. we have determined that a knox protein, osh15, also controls seed shattering. knockdown mutations of osh15 showed reduced seed-shattering phenotypes. coimmunoprecipitation experiments revealed that osh15 interacts with sh5 and qsh1, two pr ... | 2017 | 28351912 |
| an nadph oxidase rboh functions in rice roots during lysigenous aerenchyma formation under oxygen-deficient conditions. | reactive oxygen species (ros) produced by the nadph oxidase, respiratory burst oxidase homolog (rboh), trigger signal transduction in diverse biological processes in plants. however, the functions of rboh homologs in rice (oryza sativa) and other gramineous plants are poorly understood. ethylene induces the formation of lysigenous aerenchyma, which consists of internal gas spaces created by programmed cell death of cortical cells, in roots of gramineous plants under oxygen-deficient conditions. ... | 2017 | 28351990 |
| genome-wide association analysis identifies resistance loci for bacterial blight in a diverse collection of indica rice germplasm. | bacterial blight, which is caused by xanthomonas oryzae pv. oryzae (xoo), is one of the most devastating rice diseases worldwide. the development and use of disease-resistant cultivars have been the most effective strategy to control bacterial blight. identifying the genes mediating bacterial blight resistance is a prerequisite for breeding cultivars with broad-spectrum and durable resistance. we herein describe a genome-wide association study involving 172 diverse oryza sativa ssp. indica acces ... | 2017 | 28355306 |
| genome-wide analysis and expression profiling of the grf gene family in oilseed rape (brassica napus l.). | growth regulating-factors (grfs) are plant-specific transcription factors that help regulate plant growth and development. genome-wide identification and evolutionary analyses of grf gene families have been performed in arabidopsis thaliana, zea mays, oryza sativa, and brassica rapa, but a comprehensive analysis of the grf gene family in oilseed rape (brassica napus) has not yet been reported. in the current study, we identified 35 members of the bngrf family in b. napus. we analyzed the chromos ... | 2017 | 28363779 |
| heat-induced cytokinin transportation and degradation are associated with reduced panicle cytokinin expression and fewer spikelets per panicle in rice. | cytokinins (ctks) regulate panicle size and mediate heat tolerance in crops. to investigate the effect of high temperature on panicle ctk expression and the role of such expression in panicle differentiation in rice, four rice varieties (nagina22, n22; huanghuazhan, hhz; liangyoupeijiu, lypj; and shanyou63, sy63) were grown under normal conditions and subjected to three high temperature treatments and one control treatment in temperature-controlled greenhouses for 15 days during the early reprod ... | 2017 | 28367158 |
| x-ray diffraction analysis and in vitro characterization of the uam2 protein from oryza sativa. | the role of seemingly non-enzymatic proteins in complexes interconverting udp-arabinopyranose and udp-arabinofuranose (udp-arabinosemutases; uams) in the plant cytosol remains unknown. to shed light on their function, crystallographic and functional studies of the seemingly non-enzymatic uam2 protein from oryza sativa (osuam2) were undertaken. here, x-ray diffraction data are reported, as well as analysis of the oligomeric state in the crystal and in solution. osuam2 crystallizes readily but for ... | 2017 | 28368284 |
| bivalent formation 1, a plant-conserved gene, encodes an omph/coiled-coil motif-containing protein required for meiotic recombination in rice. | meiosis is essential for eukaryotic sexual reproduction and plant fertility. in comparison with over 80 meiotic genes identified in arabidopsis, there are only ~30 meiotic genes characterized in rice (oryza sativa l.). many genes involved in the regulation of meiotic progression remain to be determined. in this study, we identified a sterile rice mutant and cloned a new meiotic gene, osbvf1 (bivalent formation 1) by map-based cloning. molecular genetics and cytological approaches were carried ou ... | 2017 | 28369589 |
| paralogs and mutants show that one dma synthase functions in iron homeostasis in rice. | rice (oryza sativa) secretes 2'-deoxymugineic acid (dma) to acquire insoluble iron (fe) from the rhizosphere. in rice, dma is synthesized by dma synthase 1 (osdmas1), a member of the aldo-keto reductase super family. we screened osdmas1 paralogs for dma synthesis. none of these paralogs displayed in vitro dma synthesis activity, suggesting that rice only harbors one functional dmas. we further characterized osdmas1 mutant plants. we failed to screen homozygous knock-out plants (dmas-1), so we ch ... | 2017 | 28369596 |
| the rice lysm receptor-like kinase oscerk1 is required for the perception of short-chain chitin oligomers in arbuscular mycorrhizal signaling. | the rice lysin-motif (lysm) receptor-like kinase oscerk1 is now known to have a dual role in both pathogenic and symbiotic interactions. following the recent discovery that the oscerk1 mutant is unable to host arbuscular mycorrhizal (am) fungi, we have examined whether oscerk1 is directly involved in the perception of the short-chain chitin oligomers (myc-cos) identified in am fungal exudates and shown to activate nuclear calcium (ca2+ ) spiking in the rice root epidermis. an oscerk1 knockout mu ... | 2017 | 28369864 |
| physicochemical, cooking, and textural characteristics of grains of different rice (oryza sativa l.) cultivars of temperate region of india and their interrelationships. | the aim of the study was to explore the physiochemical, cooking, and textural characteristics of 12 traditional rice cultivars grown in kashmir (india) and develop their interrelationship. the results revealed a significant variation (p ≤ .05) among the different characteristics analyzed on the basis of characteristics evaluated for each cultivar. the novel attributes depicted by these cultivars as reflected includes their higher kernel elongation during cooking, lowest solids in gruel loss and ... | 2017 | 28370117 |
| genome-wide association mapping for phenotypic plasticity in rice. | phenotypic plasticity of plants in response to environmental changes is important for adapting to changing climate. less attention has been paid to exploring the advantages of phenotypic plasticity in resource-rich environments to enhance the productivity of agricultural crops. here, we examined genetic variation for phenotypic plasticity in indica rice (oryza sativa l.) across two diverse panels: (1) a phenomics of rice adaptation and yield (pray) population comprising 301 accessions; and (2) a ... | 2017 | 28370170 |
| short and solid culm/rfl/apo2 for culm development in rice. | the culm development of rice is characterized by elongation and medullary cavity (mc) formation, which are determined by node formation meristem and residual meristem, respectively. although many factors have been shown to affect culm elongation, molecules involved in mc formation remained to be identified. in this study, we show that a point mutation in short and solid culm (ssc), the rice homologue of arabidopsis lfy, resulted in plants with drastically reduced culm length and completely aboli ... | 2017 | 28370563 |