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Fine Mapping and Candidate Gene Prediction of the Quantitative Trait Locus qPL8 for panicle length in Rice

Phyton-International Journal of Experimental Botany 2021年第3期90卷 789-802页

作者： Lin Zhang Yiting Zou Zhong Bian Dong Xie Hadi Yeilaghi Xiaolei Fan Dongsheng Zhao Qiaoquan Liu Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingYangzhou UniversityYangzhou225009China Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Jiangsu Key Laboratory of Crop Genetics and PhysiologyYangzhou UniversityYangzhou225009China

Rice panicle is the sink organ where assimilation product accumulates,and its morphology determines the rice *** length has been suggested as a yield-related trait,but the genetic factor for its control is still *** this study,we carried out fine-mapping of qPL8,a QTL identified for panicle length in our previous *** isogenic line(NIL)with qPL8 exhibited elongated panicle without obvious effect on other panicle *** five key recombinants from NIL population,the locus was finally narrowed down to a 278-kb region,where 44 genes are *** comparing the genomic sequence of two parents,17 genes were identified with SNPs or InDels variations in the coding *** analysis showed that eight genes were up-regulated in the NIL with *** both the coding variation and expression status,several candidate genes for the locus were identified,and OsMADS37 was raised as the most possible ***,an expression QTL(eQTL)also resides in the locus,leading to a cluster of gene expression variation in the *** study will facilitate the application of qPL8 locus in rice breeding for yield potential.

关键词： Rice QTL panicle length fine mapping qPL8

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Mapping of QTLs Controlling panicle length and Effective panicle Number of Rice

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Agricultural Biotechnology 2016年第5期5卷 4-7页

作者： Jiali LI Ying LIU Wenjuan SHI Shengxin YE Qiang PENG Dashuang ZHANG Jianqiang WU Jifeng WANG Peiying HUANG Susong ZHU Guizhou Rice Research Institute Guiyang 550006 China Guizhou Seed Management Station Guiyang 550001 China

panicle length and effective panicle number of rice are closely related to yield. In this experiment, indica V20B as female parent was crossed with javanica CPSLO17 as male parent, recombinant inbred line （RIL） populations were obtained by single seed descent method, and with the RIL populations as mapping populations, QTL mapping and analysis were performed to the two panicle traits, panicle length and effective panicle. A high-density genetic map was constructed with SLAF labels, interval mapping was performed by software Map QTL5 under the threshold of 3.9, and 7 QTLs were detected on 3 chromosomes in total. Among the 7 QTLs, 5 QTLs controlling panicle length （qPLI-1, qPL1-2, qPL6-1, qPI_6-2 and qPL6-3） were located on chromosomes 1 and 6, respectively, and showed the contribution rates of 6.41%, 22.22%, 6.15%, 12.24% and 13.01%, respectively, their effect-increasing loci were mainly from CPSLO17, and qPL1-1 is a new QTL; and 2 QTLs controlling effective panicle number （qPN1 and qPN4） were located on chromosomes 1 and 4, respectively, and exhibited the contribution rates of 13.15% and 8.18%, respectively, and the effect-increasing loci were from parent V2OB. The marking of these loci lays a foundation for further cloning of genes controlling panicle length and effective panicle number and molecular marker-assisted selection.

关键词： Rice QTL panicle length Effective panicle number Yield

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A natural allele of TAW1 contributes to high grain number and grain yield in rice

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The Crop Journal 2021年第5期9卷 1060-1069页

作者： Hua Yuan Zhengyan Xu Xueqin Tan Peng Gao Mengya Jin Wencheng Song Shiguang Wang Yunhai Kang Peixiong Liu Bin Tu Yuping Wang Peng Qin Shigui Li Bingtian Ma Weilan Chen State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Rice Research InstituteSichuan Agricultural UniversityChengdu 611130SichuanChina Guangdong Key Laboratory of New Technology in Rice Breeding Rice Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou 510640GuangdongChina

Grain number per panicle (GNP) is a complex trait controlled by quantitative trait loci (QTL),directly determining grain yield in *** GNP-associated QTL is desirable for increasing rice yield.A rice chromosome segment substitution line (CSSL),F771,which showed increased panicle length and GNP,was identified in a set of CSSLs derived from a cross between two indica cultivars,R498 (recipient) and WY11327 (donor).Genetic analysis showed that the panicle traits in F771 were semidominant and controlled by multiple *** QTL were consistently identified by QTL-seq *** them,the major QTL q PLN10 for panicle length and GNP was localized to a 121-kb interval between markers N802 and N909 on chromosome *** on quantitative real-time PCR and sequence analysis,TAWAWA1(TAW1),a known regulator of rice inflorescence architecture,was identified as the candidate gene for q PLN10.A near-isogenic line,NIL-TAW1,was developed to evaluate its *** comparison with the recurrent parent R498,NIL-TAW1 showed increased panicle length (14.0%),number of secondary branches (20.9%) and GNP (22.0%),and the final grain yield per plant of NIL-TAW1 was increased by18.6%.Transgenic experiments showed that an appropriate expression level of TAW1 was necessary for panicle *** analysis suggested that the favorable F771-type (Hap 13) of TAW1was introduced from aus accessions and had great potential value in high-yield breeding both in indica and japonica *** results provide a promising genetic resource for rice grain yield improvement.

关键词： Rice panicle length Grain number per panicle Quantitative trait locus TAW1

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Constitutive Activation OsbZIP62 Improves Plant Height and Yield through Regulating the Expression of Agronomic Traits Related Genes in Rice

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Phyton-International Journal of Experimental Botany 2022年第8期91卷 1671-1686页

作者： Shiqin Yang Tao Jiang Peilin Shen Shengjie Ren Zhun Gu Fangjun Feng Yunpeng Peng Wei Wang Kai Xu Suzhou Chien-Shiung Institute of Technology Suzhou215411China Shanghai Agrobiological Gene Center Shanghai201106China College of Ocean and Bioengineering Yancheng Institute of TechnologyYancheng224051China College of Plant Sciences&Technology Huazhong Agricultural UniversityWuhan430070China School of Life Sciences Hubei UniversityWuhan430062China

Plant height is an important morphological trait that affects crop *** genes related to plant height and yield have been reported in rice(Oryza sativa L.),however,the molecular mechanism underlying the regulation of these traits is still not completely ***64 is widely used as a transcriptional activator to investigate the biological function of genes encoding transcription ***,we identified a novel bZIP transcription factor OsbZIP62 that is involved in modulating agronomic traits in *** of OsbZIP62-VP64(OsbZIP62V)significantly increases the plant height and yield per plant in ***-seq analysis showed that some plant height and panicle development related genes(i.e.,OsEATB,OsDSS1 and OsGA3ox2)were up-regulated in OsbZIP62V overexpressing rice ***,OsbZIP62 could also bind to the promoters of several putative target *** results suggested that OsbZIP62 plays a role as transcriptional regulator in regulating the expression of genes associated with agronomic traits,and OsbZIP62 fused with VP64 would be useful in crop genetic modification with improved plant architecture and yield.

关键词： Rice OsbZIP62 panicle length plant height transcription factor yield

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第十四届全国植物基因组学大会

作者： Yonghong Tao Jianlong Xu Institute of Crop Sciences National Key Facility for Crop Gene Resources and Genetic ImprovementChinese Academy of Agricultural Sciences

Rice(Oryza sativa L.) is a staple food for more than half of the world population, therefore increasing crop yield is one of the most important goals of plant science *** 496 introgression lines(ILs) derived from the ... 详细信息

关键词： quantitative trait loci gene×environment interaction introgression lines panicle length spikelets per panicle grains per panicle thousand-grain weight heading date yield pleiotropy

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