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Genetic variation analysis of pleiotropic gene Ghd7 in rice

文献类型： 外文期刊

作者： Chen, Pingli 1 ; Jiang, Liqun 1 ; Yu, Hang 1 ; Sun, Bingrui 1 ; Mao, Xingxue 1 ; Zhang, Jing 1 ; Lv, Shuwei 1 ; Xing, Junlian 1 ; Chen, Wenfeng 1 ; Fan, Zhilan 1 ; Pan, Dajain 1 ; Chen, Yangyang 1 ; Liu, Qing 1 ; Li, Chen 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Rice Res Inst, Minist Agr & Rural Affairs, Guangdong Key Lab New Technol Rice Breeding,Guangd, Guangzhou 510640, Peoples R China

关键词： Rice; Germplasm resource; Ghd7; Genetic variation; Haplotype

期刊名称：PLANT GROWTH REGULATION （ 影响因子：4.2； 五年影响因子：4.0 ）

ISSN： 0167-6903

年卷期： 2023 年 101 卷 1 期

页码：

收录情况： SCI

摘要： This study investigates genetic variations of Ghd7 in natural rice populations. Our goal was to identify a solid theoretical basis for the flexible application of different Ghd7 alleles in rice genetic breeding. Genetic variations and haplotypes of Ghd7 were analyzed in 4326 cultivated varieties and eight accessions of common wild rice (Oryza rufipogon), and some of their heading date and plant height were investigated. The Ghd7 genome contains 79 single nucleotide polymorphisms (SNP) and one insertion/deletion length polymorphism (InDel), among which 10 SNPs caused non-synonymous mutations in amino acids. These were divided into 18 haplotypes, and there were two new non-synonymous mutations in the CCT domain of Ghd7 in O. rufipogon. In this study, a total of 10 new protein types of Ghd7 were found, and 3 new protein types were found only in O. rufipogon accessions. The cultivated rice was divided into indica and japonica subpopulations. There were significant differences in heading date, yield per plant, and plant height among the 8 haplotypes. The phenotype of heading date was significantly different only in Wuhan in 2018 between indica and japonica subpopulations. The Ghd7 allele of O. rufipogon S1111, which contains a higher plant height and a longest heading date, probably encodes a new strong functional protein type. There are abundant genetic variations of Ghd7 in natural populations, and it is possible to excavate new elite haplotypes of Ghd7 in O. rufipogon for breeding.

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