数字农科院2.0

Identification And Genetic Analysis Ofqcl1.2, A Novel Allele Of The

文献类型： 外文期刊

作者： 张莉珍; 黄婧芬; 王艳艳; 许睿; 杨子怡; 赵志刚; 刘世佳; 田云璐; 郑晓明; 冯雳;王君瑞; 宋玥; 李嘉琦; 崔永霞; 张丽芳; 程云连;兰进好; 乔卫华;杨庆文

关键词： Wild Rice; Chromosome Segment Substitution Line; Sd1; Plant Height; Rice Domestication

期刊名称： BMC GENETICS

ISSN： 1471-2156

年卷期： 2020 年 21 卷 1 期

页码：

收录情况： JCR（2021版）

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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