数字农科院2.0

Genome-Wide Association Study Identifies a Plant-Height—Associated Gene OsPG3 in a Population of Commercial Rice Varieties

文献类型： 外文期刊

作者： Shasha Peng;Yanchen Liu;Yuchen Xu;Jianhua Zhao;Peng Gao;Qi Liu;Shuangyong Yan;Yinghui Xiao;Shi Min Zuo;Houxiang Kang

作者机构：

关键词： cell wall;CRISPR/Cas9 gene editing;genome-wide association study;polygalacturonase;rice plant height

期刊名称： International Journal of Molecular Sciences

ISSN： 1661-6596

年卷期： 2023 年 24 卷 14 期

页码：

收录情况： SCIE（2023版）

摘要： Plant height is one of the most crucial components of plant structure. However, due to its complexity, the genetic architecture of rice plant height has not been fully elucidated. In this study, we performed a genome-wide association study (GWAS) to determine rice plant height using 178 commercial rice varieties and identified 37 loci associated with rice plant height (LAPH). Among these loci, in LAPH2, we identified a polygalacturonase gene, OsPG3, which was genetically and functionally associated with rice plant height. The rice plant exhibits a super dwarf phenotype when the knockout of the OsPG3 gene occurs via CRISPR-Cas9 gene-editing technology. RNA-Seq analysis indicated that OsPG3 modulates the expression of genes involved in phytohormone metabolism and cell-wall-biosynthesis pathways. Our findings suggest that OsPG3 plays a vital role in controlling rice plant height by regulating cell wall biosynthesis. Given that rice architecture is one of the most critical phenotypes in rice breeding, OsPG3 has potential in rice’s molecular design breeding toward an ideal plant height.

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