检索结果-南通市图书馆

SRG1,Encoding a Kinesin-4 Protein,Is an Important Factor for Determining Grain Shape in Rice

在线全文

学校读者我要写书评

暂无评论

Rice science 2018年第6期25卷 297-307页

作者： QIN Ran Delara AKHTER YANG Chengcong Ujjal Kumar NATH Jamal ESHAG JIN Xiaoli shi chunhai Department of Agronomy Zhejiang University Department of Genetics and Plant Breeding Sylhet Agricultural University Department of Genetics and Plant Breeding Bangladesh Agricultural University

Grain shape is one of the important agronomic traits, which is closely related to the yield of rice.A new rice mutant, named small and round grain(srg1), was isolated from an indica cultivar Zhenong 34 by ethyl methane sulfonate(EMS) mutagenesis. The microscopic analysis showed that the cell length of spikelet in srg1 was decreased compared with that in wild type(WT), which caused the grain length ***, the grains of srg1 were wider than those of WT because of the increased cell layers in spikelet in the lateral direction. Therefore, the inhibition of cell expansion and increased cell proliferation collectively led to the small and round grain. By map-based cloning, the gene SRG1 was located on the short arm of chromosome 9, which encodes a kinesin-4 protein, represented by the gene LOC_Os09 g02650. A single nucleotide polymorphism, occurred in the 16 th exon of SRG1, led to premature translation stop in mutant. The cell cycle-related genes were up-regulated in srg1, which conferred that SRG1 controlled grain width through the cell proliferation. Since the role of SRG1 in regulating grain shape was not clarified well before, it is valuable to explore the mechanism of grain development. This study could, hence, provide a morphogenesis and molecular basis for elucidating the function of SRG1, as well as a new germplasm resource for the further study of grain development.

关键词： small and round grain kinesin-4 protein gene mapping rice

ANALYSIS OF GENETIC CORRELATIONS FOR QUALITY TRAITS IN INDICA RICE

在线全文

学校读者我要写书评

暂无评论

生物数学学报 1995年第3期10卷 15-20页

作者： chunhai shi Jun Zhu(Agronomy Department,Zhejiang Agricultural University,Hangzhou 310029)

Analysis of genetic correlations was conducted for cooking and nutrient quality traits of milled rice in indica rice(Oryza sativa ***)by using a genetic model for endosperm traits of cereal *** was indicated by the results that the relationships between gel consistency and protein content,protein content and the ratio of lysine content to protein content,and protein index and the ratio of lysine content to protein content were mainly controlled by additive effects,but also affected by some *** genetic correlations between amylose content and lysine content,gel consistency and protein index,and between gel consistency and the ratio of lysine content to protein content showed that relationships for these traits were mainly controlled by some dominance *** selection for those traits controlled mainly by additive correlations was better than those mainly controlled by dominance *** results in this experiment could be used in rice breeding.

关键词： Genetic covariances Rice quality traits Indica rice

Characterization of wavy root 1,an agravitropism allele,reveals the functions of OsPIN2 in fine regulation of auxin transport and distribution and in ABA biosynthesis and response in rice(Oryza sativa L.)

在线全文

学校读者我要写书评

暂无评论

The Crop Journal 2022年第4期10卷 980-992页

作者： Wenqiang Li Minjuan Zhang Lei Qiao Yunbo Chen Dapeng Zhang Xiuqing Jing Pengfei Gan Yangbin Huang Junru Gao Wenting Liu chunhai shi Hongchang Cui Haifeng Li Kunming Chen State Key Laboratory of Crop Stress Biology in Arid Areas College of Life SciencesNorthwest A&F UniversityYangling 712100ShaanxiChina The Sericultural and Silk Research Institute College of Animal Science and TechnologyNorthwest A&F UniversityYangling 712100ShaanxiChina College of Agronomy Northwest A&F UniversityYangling 712100ShaanxiChina Department of Agronomy College of Agriculture and BiotechnologyZhejiang UniversityHangzhou 310058ZhejiangChina Department of Biological Science Florida State UniversityTallahasseeFL 32306USA Coconut Research Institute of Chinese Academy of Tropical Agricultural Sciences Wenchang 571339HainanChina

Root system architecture is influenced by *** the root senses gravity and directs its orientation,so-called gravitropism,is not only a fundamental question in plant biology but also theoretically important for genetic improvement of crop root ***,the mechanism has not been elucidated in most *** characterized a rice agravitropism allele,wavy root 1(war1),a loss-of-function allele in OsPIN2,which encodes an auxin efflux *** loss of OsPIN2 function,war1 leads to altered root system architecture including wavy root,larger root distribution angle,and shallower root system due to the loss of gravitropic perception in root *** the war1 mutant,polar auxin transport was disrupted in the root tip,leading to abnormal auxin levels and disturbed auxin transport and distribution in columella *** sedimentation,an important process in gravitropic sensing,was also decreased in root tip columella *** results indicated that OsPIN2 controls gravitropism by finely regulating auxin transport,distribution and levels,and amyloplast sedimentation in root *** identified a novel role of OsPIN2 in regulating ABA biosynthesis and response *** of OsPIN2 function in the war1 resulted in increased sensitivity to ABA in seed germination,increased ABA level,changes in ABA-associated genes in roots,and decreased drought tolerance in the *** results suggest that the auxin transporter OsPIN2 not only modulates auxin transport to control root gravitropism,but also functions in ABA signaling to affect seed germination and root development,probably by mediating crosstalk between auxin and ABA pathways.

关键词： Auxin transporter Root development Wavy root Gravitropism Abscisic acid(ABA) Drought tolerance

Elimination of a Retrotransposon for Quenching Genome Instability in Modern Rice

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2019年第10期12卷 1395-1407页

作者： Yu Peng Yingying Zhang Yijie Gui Dong An Junzhong Liu Xun Xu Qun Li Junmin Wang Wen Wang chunhai shi Longjiang Fan Baorong Lu Yiwen Deng Sheng Teng Zuhua He National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology&EcologyChinese Academy of SciencesShanghai 200032China The Protected Horticulture Institute Shanghai Academy of Agricultural SciencesShanghai 201403China School of Life Sciences Fudan UniversityShanghai 200433China College of Agriculture and Biotechnology Zhejiang UniversityHangzhou 310058China Kunming Institute of Zoology Chinese Academy of SciencesKunming 650223China Zhejiang Academy of Agricultural Sciences Hangzhou 310021China

Transposable elements(TEs)constitute the most abundant portions of plant genomes and can dramatically shape host genomes during plant *** also play important roles in crop ***,whether TEs themselves are also selected during crop domestication has remained ***,we identify an active long terminal repeat(LTR)retrotransposon,HUO,as a potential target of selection during rice domestication and *** is a low-copy-number LTR retrotransposon,and is active under natural growth conditions and transmitted through male gametogenesis,preferentially inserting into genomic regions capable of *** exists in all wild rice accessions and about half of the archaeological rice grains(1200–7000 years ago)and landraces surveyed,but is absent in almost all modern varieties,indicating its gradual elimination during rice domestication and *** analyses showed that HUO is subjected to strict gene silencing through the RNA-directed DNA methylation *** results also suggest that multiple HUO copies may trigger genomic instability through altering genome-wide DNA methylation and small RNA biogenesis and changing global gene expression,resulting in decreased disease resistance and yield,coinciding with its elimination during rice ***,our study suggests that negative selection of an active retrotransposon might be important for genome stability during crop domestication and breeding.

关键词： LTR retrotransposon genome instability evolution domestication resistance

Genetic effects analysis for grain traits of indica rice

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Rice Research Newsletter 1995年第2期3卷 4-5页

作者： shi chunhai and SHEN Zongtan,Zhejiang Agri Univ,Hangzhou,310029,China

Genetic effects analysis of grain traits was conducted based on the additive-dominance genetic model (Zhu, 1992, 1993) for the quantitative traits. Incomplete diallel crosses from early season indica rice (Oryza sativa L. ) were made using eight parents with short grain shape (Guanglu’ai 4 et al. ) as females and five parents with long grain shape (Xiangzaoxian 3 et al. ) as males. Fseedlings and their parents were transplanted into the field at 15×15cm spacing, with three replications. Seeds from 10 plants in the middle of plot were used to measure the agronomic traits, including grain length, grain width, grain thickness, ratio of grain length to

关键词： length

Genetic effects analysis for grain traits of indica rice

在线全文

学校读者我要写书评

暂无评论

Rice Science 1995年第2期 4-5页

作者： shi chunhai SHEN Zongtan Zhejiang Agri Univ,Hangzhou 310029,China

Genetic effects analysis of grain traits was conductedbased on the additive-dominance genetic model(Zhu, 1992, 1993)for the quantitative traits. In-complete diallel crosses from early season indica rice(Oryza sativa L.)were made using eight parentswith short grain shape(Guanglu’ai 4 et al.)as fe-males andfive parents with long grain shape(Xi-angzaoxian 3 et al.)as males. Fseedlings and their

关键词： Genetic effects analysis for grain traits of indica rice

Genetic Analysis of Leucine Content in Indica-Japonica Hybrid Rice (Oryza sativa L.)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2010年第1期1卷 17-23页

作者： Xiaoming Zhang chunhai shi Jianguo Wu Shenghai Ye Genliang Bao Wenchao Yan Institute of Crop Research and Atomic Energy Utilization Zhejiang Academy of Agricultural Sciences College of Agriculture and Biotechnology Zhejiang University

Genetic control of leucine content in indica-japonica hybrid rice (Oryza sativa L.) was studied in 35 crosses of F1 and F2 generations, which were derived from crossing 7 male sterile indica rice lines with 5 restorer japonica rice lines along with their parents. Two genetic models and their corresponding statistical methods for quantitative traits of triploid seeds in cereal crops were used for the analysis. The first was the unconditional genetic model, which refers to the analysis of cumulative measurements (from flowering to a specific time) along the developmental stages, while the second was the conditional genetic model, which relates to analysis from one developmental stage to another stage (t - 1→t). The results showed that leucine content of indica-japonica hybrid rice was controlled by the expression of triploid endosperm effect (endosperm additive effect and endosperm dominant effect), cytoplasm effect, diploid maternal plant effect (maternal additive effect and maternal dominant effect) and their environmental interaction effects. Of these effects, endosperm dominant effect and maternal dominant effect were more important at the earlier stages, while endosperm additive effect and maternal additive effect were more important at the later stages of rice grain development under both unconditional and conditional genetic analyses. Due to the high heritabilities, which came from endosperm, maternal and cytoplasm effects for leucine content at different developmental stages, selection for leucine content of indica-japonica hybrid rice would be more efficient at early generations in breeding programs.

关键词： Indica-Japonica Hybrid Rice Developmental Genetics Quality Leucine Content Genetic Variance Conditional Genetic Variance Heritability

Analysis of genetic relationships between grain milling quality traits and plant agronomic traits of rice

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Rice Research Newsletter 1996年第2期4卷 9-11页

作者： shi chunhai and ZHU Jun,Agronomy Dept,Zhejiang Agri Univ,Hangzhou 310029,China

Since seed and maternal plant are in different generations,the grain milling traits and plant agronomic traits of rice are based on differentgenetic *** the genetic modelswhich could estimate covariance componentsbetw... 详细信息

关键词： length Analysis of genetic relationships between grain milling quality traits and plant agronomic traits of rice

激发学生对遗传学实验学习兴趣的教学方法探索

在线全文

学校读者我要写书评

暂无评论

遗传 2014年第2期36卷 181-187页

作者：肖建富石春海浙江大学农业与生物技术学院杭州310058

通过增设研究性较强或由学生自主设计的实验项目,采用生动有趣的案例式教学和问题式教学,用"多元性"的教学理念设计实验教学环节,结合综合性的教学手段,有效激发了学生对遗传学实验的学习兴趣。

关键词：遗传学实验学习兴趣案例式教学问题式教学 “多元性”教学