Scholarlink

<p>Drought poses a severe threat to the stability of crop yields. It is crucial to identify genetic resources and decipher the molecular mechanisms underlying drought resistance in crops. Here we generated high-quality genome assemblies of 25 maize germplasms exhibiting substantial variation in drought resistance. Combined with 31 additional maize genome sequences, a comprehensive pangenome analysis was performed. Rare allelic variations and extensive regulatory diversity were revealed in abscisic acid-related or drought-related genes, which may contribute to the diversity in drought resistance among germplasms. Furthermore, we identified three genes, <i>ZmUGE2</i>, <i>ZmSIL2</i> and <i>ZmASI3</i>, that enhance maize drought resistance by strengthening mechanical support of the cell wall, regulating stress-responsive gene expression and coordinating male and female inflorescence development, respectively. Thus, this study provides valuable insight into the genetic control of drought resistance in maize at different growing stages. The expanded maize pangenome information serves as a valuable resource for maize genomic research.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A pangenome of maize provides genetic insights into drought resistance

  • 期刊论文

  • 发表日期：

    2025年10月27日

查看全文
  • Shiping Yang,
  • Yijie Wang,
  • Qin Huang,
  • Mengyuan Wang,
  • Shuhui Wang,
  • Xiaomeng Fu,
  • Chaohui Zhu,
  • Jinkui Cheng,
  • Shengxue Liu,
  • Zhirui Yang,
  • Ning Yang,
  • Jianbing Yan,
  • Xiaohong Yang,
  • Feng Qin

摘要

Drought poses a severe threat to the stability of crop yields. It is crucial to identify genetic resources and decipher the molecular mechanisms underlying drought resistance in crops. Here we generated high-quality genome assemblies of 25 maize germplasms exhibiting substantial variation in drought resistance. Combined with 31 additional maize genome sequences, a comprehensive pangenome analysis was performed. Rare allelic variations and extensive regulatory diversity were revealed in abscisic acid-related or drought-related genes, which may contribute to the diversity in drought resistance among germplasms. Furthermore, we identified three genes, ZmUGE2, ZmSIL2 and ZmASI3, that enhance maize drought resistance by strengthening mechanical support of the cell wall, regulating stress-responsive gene expression and coordinating male and female inflorescence development, respectively. Thus, this study provides valuable insight into the genetic control of drought resistance in maize at different growing stages. The expanded maize pangenome information serves as a valuable resource for maize genomic research.