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Deletion of a 1,049 bp sequence from the 5′UTR upstream of the SiHEC3 gene induces a seed non-shattering mutation in sesame

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Journal of Integrative Agriculture 2024年第8期23卷 2589-2604页

作者： Ming Ju Guiting Li Qiuzhen Tian Hengchun Cao Qin Ma Yinghui Duan Hui Guo Zhanyou Zhang Yingying Huang Huili Wang Haiyang Zhang Hongmei Miao The Shennong Laboratory Zhengzhou 450002China Henan Sesame Research Center Henan Academy of Agricultural SciencesZhengzhou 450002China Key Laboratory of Specific Oilseed Crops Genomics of Henan Province Henan Sesame Research CenterHenan Academy of Agricultural SciencesZhengzhou 450002China

Sesame is a labor intensive crop with limited mechanized harvesting mainly due to the seed shattering(SS)*** this study,we performed a genetic analysis of the seed-shattering resistance(SR)trait with a SR sesame mutant *** the SS type,the parenchyma cells in the abscission zone of the 12M07 mutant are arranged loosely but adhere to the seed *** analysis of six generations derived from 12M07(SR)×Xiangcheng Dazibai(SS)showed that the SR trait is recessive and controlled by a single gene *** mapping of the F2population with 888,619 variants(single-nucleotide polymorphisms(SNPs)and insertion-deletion(InDels))and 31,884 structural variations(SVs)determined that only SV12002 in the 5′upstream region of gene Sindi0765000(named SiHEC3)in Chr.3 was significantly associated with the SR ***3 encodes the bHLH transcription factor.A 1,049 bp deletion occurred in the 5′UTR of Sihec3 in ***3 is mainly expressed in developing placental tissues,with the expression peaking in capsules at 45 days after pollination.A dual-luciferase reporter assay in tobacco confirmed that the promoter activity of Sihec3 was reduced because of the deletion of the 1,049 bp promoter ***–protein interaction network analysis showed that HEC3 is co-expressed with nine key proteins,such as SHATTERPROOF1(SHP1)and seedSTICK(STK)which participate in the secondary wall biosynthesis of the abscission layer in *** findings of this study show the important function of Sihec3corresponding with the SR trait and supply the genetic information for breeding new varieties that are amenable to mechanized harvesting in sesame and other crops.

关键词： sesame(Sesamum indicum L.) association mapping seed shattering structure variation bHLH transcription factor

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Phenotypical and gene co-expression network analyses of seed shattering in divergent sorghum(Sorghum spp.)

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The Crop Journal 2023年第2期11卷 478-489页

作者： Xin Xiao Mengjiao Zhu Yishan Liu Jingru Zheng Yiping Cui Candong Xiong Jiangjiang Liu Jun Chen Hongwei Cai College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China College of Grassland Science and Technology China Agricultural UniversityBeijing 100193China Forage Crop Research Institute Japan Grassland Agricultural and Forage Seed Association388-5 HigashiakadaNasushiobaraTochigi 329-2742Japan

Sorghum[Sorghum bicolor(L.)Moench],a multipurpose C4 crop,is also a model species of the Poaceae family for plant *** the process of domestication,the modification of seed dispersal mode is considered a key event,as the loss of seed shattering caused a significant increase in *** order to understand the seed shattering process in sorghum,we further studied eight previously identified divergent sorghum germplasm with different shattering *** described their phenotypes in great detail,analyzed the histology of abscission zone,and conducted a gene co-expression *** observed that the abscission layer of the most strong-shattering varieties began to differentiate before the 5-10 cm panicles development stage and was completely formed at flag leaf *** protective cells on the pedicels were also fully lignified by *** the weighted gene correlation network analysis(WGCNA),we mined for candidate genes involved in the abscission process at the heading *** found that these genes were mainly associated with such biological processes as hormone signal transmission(SORBI_3003G361300,SORBI_3006G216500,SORBI_3009G027800,SORBI_3007G077200),cell wall modification and degradation(SORBI_3002G205500,SORBI_3004G013800,SORBI_3010G022400,SORBI_3003G251800,SORBI_3003G254700,SORBI_3003G410800,SORBI_3009G162700,SORBI_3001G406700,SORBI_3004G042700,SORBI_3004G244600,SORBI_3001G099100),and lignin synthesis(SORBI_3004G220700,SORBI_3004G062500,SORBI_3010G214900,SORBI_3009G181800).Our study has provided candidate genes required for shedding for further *** believe that function characterization of these genes may provide insight into our understanding of seed shattering process.

关键词： Divergent sorghum seed shattering Abscission zone WGCNA

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Genetic control of seed shattering in rice by the APETALA2 transcription factor shattering ABORTION1

Genetic control of seed shattering in rice by the APETALA2 t...

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第十四届全国植物基因组学大会

作者： Yan Zhou Danfeng Lu Canyang Li Jianghong Luo Bofeng Zhu Zixuan Wang Bin Han National Center for Gene Research Institute of Plant Physiology and EcologyCAS

Reduced seed-shattering is an important agricultural trait in rice domestication. Although two rice shattering genes have been identified,the pathway in the regulation of seed shattering in rice remains *** order to f... 详细信息

关键词： rice AP2 protein shattering 4 seed shattering abscission zone

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Formation Mechanism and Occurrence Law of Pod shattering in Soybean:A Review

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Phyton-International Journal of Experimental Botany 2022年第7期91卷 1327-1340页

作者： Jinfeng Liu Yuzhe Zhang Yushi Jiang Hongji Sun Ruijie Duan Jing Qu Dan Yao Siyan Liu Shuyan Guan College of Life Sciences Jilin Agricultural UniversityChangchun130118China College of Agronomy Jilin Agricultural UniversityChangchun130118China

seed shattering refers to the phenomenon in which the pods split along the abdominal and back sutures before the crop is received,so that the seeds are *** shattering is vital to the reproduction of their offspring in wild plants,but it is also the main cause of crop yield loss ***-explosion resistance is a complex process of physical and physiological and biochemical *** seed shattering phenomenon is widespread,which severely restricts the development of soybean *** shattering(pod cracking or fruit dropping)is essential for the reproduction of its offspring in wild plants,but it is also the main cause of crop yield *** article analyzes the morphology and structure of pods related to seed shattering from the morphology of *** the basis of the regularity of the occurrence of seed shattering and the summary of phenotypic index identification methods,physiologically introduced the regulation mechanism of key enzymes and endogenous hormones on seed *** localization,labeling and cloning of seed shattering genes are introduced in molecular *** study focused on reviewing the latest advances in the research on soybean seed shattering characteristics,and discussed with the research results of related ***,the research and application of soybean seed shattering resistance were prospected for several aspects.

关键词： seed shattering genetic law identification mechanism of action

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