Deciphering PDH1 's role in mung bean domestication: a genomic perspective on pod dehiscence

作者：Shuai Li, Yaling Li, Hong Zhu, Liyang Chen, Huiying Zhang, Lijie Lian, Miaomiao Xu, Xilong Feng, Rui Hou, Xiaolin Yao, Yifan Lin, Huaying Wang, Xutong Wang · 发表于：The Plant Journal · 年份：2024 · DOI：10.1111/tpj.16680 · 被引用次数：12 · 研究领域：Soybean genetics and cultivation、Legume Nitrogen Fixing Symbiosis、Agricultural pest management studies

Mung bean (Vigna radiata) stands as a crucial legume crop in Asia, contributing to food security. However, our understanding of the underlying genetic foundation governing domesticated agronomic traits, especially those linked to pod architecture, remains largely unexplored. In this study, we delved into the genomic divergence between wild and domesticated mung bean varieties, leveraging germplasm obtained from diverse sources. Our findings unveiled pronounced variation in promoter regions (35%) between the two mung bean subpopulations, suggesting substantial changes in gene expression patterns during domestication. Leveraging transcriptome analysis using distinct reproductive stage pods and subpopulations, we identified candidate genes responsible for pod and seed architecture development, along with Genome-Wide Association Studies (GWAS) and Quantitative Trait Locus (QTL) analysis. Notably, our research conclusively confirmed PDH1 as a parallel domesticated gene governing pod dehiscence in legumes. This study imparts valuable insights into the genetic underpinnings of domesticated agronomic traits in mung bean, and simultaneously highlighting the parallel domestication of pivotal traits within the realm of legume crops.