A5059207207- Genetic Mapping and Diversity in Plants and Animals
- Rice Cultivation and Yield Improvement
- GABA and Rice Research
- Plant Molecular Biology Research
- Plant Reproductive Biology
- Genomics and Phylogenetic Studies
- Genetics and Plant Breeding
- Plant Disease Resistance and Genetics
- Photosynthetic Processes and Mechanisms
- Plant-Microbe Interactions and Immunity
- Plant Virus Research Studies
- Chromosomal and Genetic Variations
- Insect-Plant Interactions and Control
- Plant Genetic and Mutation Studies
- Agricultural Systems and Practices
- Fungal and yeast genetics research
- Plant tissue culture and regeneration
- Plant Pathogens and Fungal Diseases
- Cocoa and Sweet Potato Agronomy
- Mycotoxins in Agriculture and Food
- Plant nutrient uptake and metabolism
- Plant Stress Responses and Tolerance
- Genetic diversity and population structure
- Soybean genetics and cultivation
- CRISPR and Genetic Engineering
China National Hybrid Rice R&D Central Hunan Hybrid Rice Reserch Center
2013-2023
Hunan Academy of Agricultural Sciences
2016-2023
State Key Laboratory of Hybrid Rice
2012-2021
Hunan Agricultural University
2015-2020
Hunan University
2019
Rice University
1996-2015
Central South University
2013-2014
Hunan Rice Research Institute
1991
We have produced a draft sequence of the rice genome for most widely cultivated subspecies in China, Oryza sativa L. ssp. indica , by whole-genome shotgun sequencing. The was 466 megabases size, with an estimated 46,022 to 55,615 genes. Functional coverage assembled sequences 92.0%. About 42.2% exact 20-nucleotide oligomer repeats, and transposons were intergenic regions between Although 80.6% predicted Arabidopsis thaliana genes had homolog rice, only 49.4% A. . large proportion no...
Abstract Wild species are valued as a unique source of genetic variation, but they have rarely been used for the improvement quantitative traits. To identify trait-improving trait loci (QTL) alleles from exotic species, an accession Oryza rufipogon, relative cultivated rice, was chosen on basis diversity study. An interspecific BC2 testcross population (V20A/O. rufipogon//V20B///V20B////Ce64) consisting 300 families evaluated 12 agronomically important The O. rufipogon phenotypically...
Success of modern agriculture relies heavily on breeding crops with maximal regional adaptability and yield potentials. A major limiting factor for crop cultivation is their flowering time, which strongly regulated by day length (photoperiod) temperature. Here we report identification characterization Days to heading 7 (DTH7), a genetic locus underlying photoperiod sensitivity grain in rice. Map-based cloning reveals that DTH7 encodes pseudo-response regulator protein its expression...
The phytohormone cytokinin (CK) positively regulates the activity and function of shoot apical meristem (SAM), which is a major parameter determining seed production. rice ( Oryza sativa L.) Gn1a / OsCKX2 Grain number 1a Cytokinin oxidase 2 ) gene, encodes oxidase, has been identified as quantitative trait locus contributing to grain improvement in breeding practice. However, molecular mechanism how expression regulated planta remains elusive. Here, we report that zinc finger transcription...
Brown planthopper (BPH) is one of the most destructive insects affecting rice ( Oryza sativa L.) production. Phenylalanine ammonia-lyase (PAL) a key enzyme involved in plant defense against pathogens, but role PAL insect resistance still poorly understood. Here we show that expression majority PALs significantly induced by BPH feeding. Knockdown Os reduces resistance, whereas overexpression OsPAL8 susceptible cultivar enhances its resistance. We found OsPALs mediate to regulating...
Rice (Oryza sativa L.) is a chilling-sensitive staple crop that originated in subtropical regions of Asia. Introduction the chilling tolerance trait enables expansion rice cultivation to temperate regions. Here we report cloning and characterization HAN1, quantitative locus (QTL) confers on japonica rice. HAN1 encodes an oxidase catalyzes conversion biologically active jasmonoyl-L-isoleucine (JA-Ile) inactive form 12-hydroxy-JA-Ile (12OH-JA-Ile) fine-tunes JA-mediated response. Natural...
An interspecific advanced backcross population derived from a cross between Oryza sativa 'V20A' (a popular male-sterile line used in Chinese rice hybrids) and glaberrima (accession IRGC No. 103544 Mali) was to identify quantitative trait loci (QTL) associated with grain quality morphology. A total of 308 BC 3 F 1 hybrid families were evaluated for 16 grain-related traits under field conditions Changsha, China, the same RFLP SSR marker segregation at Cornell University (Ithaca, N.Y.). Eleven...
By using a whole-genome oligonucleotide microarray, designed based on known and predicted indica rice genes, we investigated transcriptome profiles in developing leaves panicles of superhybrid LYP9 its parental cultivars 93-11 PA64s. We detected 22,266 expressed genes out 36,926 total set collectively from 7 tissues, including at seedling tillering stages, flag booting, heading, flowering, filling stage. Clustering results showed that the F1 hybrid's expression resembled those lines more...
Abstract Traits such as grain shape, panicle length and seed shattering, play important roles in yield harvest. In this study, the cloning functional analysis of PANICLE TRAITS 2 ( PT2 ), a novel gene from Indica rice Chuandali (CDL), is reported. synonymous with Growth‐Regulating Factor 4 OsGRF4 which encodes growth‐regulating factor that positively regulates shape negatively shattering. Higher expression correlated larger grain, longer lower A unique mutation, occurs at OsmiRNA396 target...
This article reviews the history and progress of hybrid rice development. Hybrid research was initiated back in 1964, commercialized 1976. Three-line two-line system were developed 1974 1995, respectively. Research on super rice, which first launched by Ministry Agriculture, China 1996, is discussed, great had been achieved with a new yield record 15.4 t ha−1 6.84 ha demonstration location Xupu, Hunan Province, 2014. And mechanism heterosis, techniques seed production modern field...
Hybrid rice is the dominant form of planted in China, and its use has extended worldwide since 1970s. It offers great yield advantages contributed greatly to world's food security. However, molecular mechanisms underlying heterosis have remained a mystery. In this study we integrated genetics omics analyses determine candidate genes for model two-line hybrid system, Liang-you-pei 9 (LYP9) parents. Phenomics revealed that better parent (BPH) not ascribed BPH all components but specific...
Rice stripe virus (RSV) causes one of the most serious viral diseases rice (Oryza sativa L.), but molecular basis RSV resistance has remained elusive. Here we show that resistant allele STV11 (STV11-R) encodes a sulfotransferase (OsSOT1) catalysing conversion salicylic acid (SA) into sulphonated SA (SSA), whereas gene product encoded by susceptible STV11-S loses this activity. Sequence analyses suggest STV11-R and alleles were predifferentiated in different geographic populations wild rice,...
Understanding the molecular basis of male sterility and developing practical male-sterility systems are essential for heterosis utilization commercial hybrid seed production in crops. Here, we report regulation by genic gene maize 7 (ZmMs7) its application a dominant system multiple species. ZmMs7 is specifically expressed anthers, encodes plant homeodomain (PHD) finger protein that functions as transcriptional activator, plays key role tapetal development pollen exine formation. can...
Arabidopsis and rice are the only two model plants whose finished phase genome sequence has been completed. Here we report construction of an oligomer microarray based on presently known predicted gene models in genome. This was used to analyze transcriptional activity representative organ types. Expression 86% 41,754 detected. A significant fraction these expressed organized into chromosomal regions, about 100 kb length, that exhibit a coexpression pattern. Compared with similar genome-wide...
Abstract Obtaining genetic variation information from indica rice hybrid parents and identification of loci associated with heterosis are important for breeding. Here, we resequence 1,143 accessions mostly selected the superior cultivars China, identify variations, perform kinship analysis. We find different crossing patterns between 3- 2-line lines. By calculating frequencies parental differences (FPVDs), a more direct approach studying heterosis, that linked to which include 98 in 3-line...
Heterosis utilization is the most effective way to improve rice yields. The cytoplasmic male-sterility (CMS) and photoperiod/thermosensitive genic (PTGMS) systems have been widely used in production. However, rate of resource for CMS system hybrid low, seed production PTGMS affected by environment. technical limitations these two breeding methods restrict rapid development rice. advantages (GMS) rice, such as stable sterility free combination, can fill gaps first generations technology. At...
Interactions and co-evolution between plants herbivorous insects are critically important in agriculture. Brown planthopper (BPH) is the most severe insect of rice, biotypes adapt to feed on different rice genotypes. Here, we present genomics analyses 1,520 global germplasms for resistance three BPH biotypes. Genome-wide association studies identified 3,502 single nucleotide polymorphisms (SNPs) 59 loci associated with rice. We cloned a previously unidentified gene Bph37 that confers BPH....
Nitrogen (N) is a major limiting factor in crop production, and plant adaptive responses to low N are involved many post-transcriptional regulation. Recent studies indicate that miRNAs play important roles responses. However, soybean limitation have been not reported. We constructed sixteen libraries identify N-responsive on genome-wide scale using samples from 2 different genotypes (low sensitive tolerant) subjected various periods of nitrogen stress. Using high-throughput sequencing...