Identification and genetic analysis ofqCL1.2, a novel allele of the "green revolution" geneSD1from wild rice (Oryza rufipogon) that enhances plant height

文献类型： 外文期刊

第一作者： Zhang, Lizhen

作者： Zhang, Lizhen;Yang, Ziyi;Zhang, Li-Fang;Lan, Jinhao;Zhang, Lizhen;Huang, Jingfen;Wang, Yanyan;Xu, Rui;Zheng, Xiaoming;Li, Fei;Wang, Junrui;Song, Yue;Li, Jiaqi;Cui, Yongxia;Cheng, Yunlian;Qiao, Weihua;Yang, Qingwen;Huang, Jingfen;Zhao, Zhigang;Liu, Shijia;Tian, Yunlu

作者机构：

关键词： Wild rice; Chromosome segment substitution line; SD1; Plant height; Rice domestication

期刊名称：BMC GENETICS （ 影响因子：2.797； 五年影响因子：3.263 ）

ISSN： 1471-2156

年卷期： 2020 年 21 卷 1 期

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收录情况： SCI

摘要： Background The exploitation of novel alleles from wild rice that were lost during rice cultivation could be very important for rice breeding and evolutionary studies. Plant height (PH) was a target of artificial selection during rice domestication and is still a target of modern breeding. The "green revolution" gene semi-dwarf 1 (SD1) were well documented and used in the past decades, allele from wild rice could provide new insights into the functions and evolution of this gene. Results We identified a PH-related quantitative trait locus,qCL1.2,from wild riceusing a set of chromosome segment substitution lines.qCL1.2encodesa novel allele ofSD1gene. The wild allele ofSD1is a dominant locus that can significantly promote rice internode length by regulating the expression levels of genes involved in gibberellin biosynthesis and signal transduction. Nucleotide diversity and haplotype network analyses of theSD1gene were performed using 2822 rice landraces. Two previously reported functional nucleotide polymorphisms clearly differentiatedjaponicaandindicarice; however, they were not associated with PH selection. Other new functional nucleotide polymorphisms in the coding, but not promoter, regions were involved in PH selection during rice domestication. Our study increasesunderstanding of the riceSD1gene and provides additional evidence of this gene's selection during rice domestication. Conclusions Our findings provide evidence thatSD1gene from wild rice enhances plant height and new functional nucleotide polymorphisms of this gene were artificially selected during cultivated rice differentiation.

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