Scholarlink

<p>Lipoxygenases (LOXs) play vital roles in plant growth and defense. In this study, through genomic and molecular analyses, we discover a major <i>LOX</i> gene (<i>LOX-A4</i>) differentially expressed in <i>Triticum urartu</i> (Tu), the diploid progenitor of A subgenome in polyploid wheat. Compared to Tu accessions carrying wild type gene (<i>LOX-A4</i><sup><i>W</i></sup>), those bearing mutant allele (<i>LOX-A4</i><sup><i>m</i></sup>) show better growth but lower stress tolerance. These differences concur with a wider geographical distribution of <i>LOX-A4</i><sup><i>m</i></sup> accessions than <i>LOX-A4</i><sup><i>W</i></sup> materials in the Fertile Crescent. Interestingly, only mutant <i>LOX-A4</i> alleles are detected in 3,516 worldwide tetraploid and hexaploid wheat lines; restoring <i>LOX-A4</i><sup><i>W</i></sup> expression in common wheat inhibits growth but enhances stress tolerance. Furthermore, genome-wide identity-by-state analysis reveals that polyploid wheat A subgenome is more related to the A genome in 13 <i>LOX-A4</i><sup><i>m</i></sup> Tu accessions. Thus, our work provides evidence that <i>LOX</i> gene variation shapes plant gene pools and their contributions to polyploid genome formation via regulating growth-defense trade-offs.</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

LOX-A4 shapes Triticum urartu gene pools and contributions to the A subgenome of polyploid wheat

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月21日

查看全文
  • Bei Li,
  • Zhiyong Wang,
  • Lingli Dong,
  • Zhenying Dong,
  • Kunpu Zhang,
  • Yanpeng Wang,
  • Reyazul Rouf Mir,
  • Jinfang Chu,
  • Yiwen Li,
  • Mingtian Zhao,
  • Mengen Chen,
  • Zhaohui Wang,
  • Yue Zhang,
  • Lidan Guo,
  • Annapurna Chitikineni,
  • Jijun Yan,
  • Peiyong Xin,
  • Bingbing Zhang,
  • Junlong Li,
  • Xiao Sun,
  • Yuxuan Meng,
  • Yining Wang,
  • Yanmeng Ding,
  • Jiatian Wang,
  • Shengjia Zhang,
  • Cuilan Shi,
  • Zehong Yan,
  • Shoufen Dai,
  • Weining Song,
  • Caixia Gao,
  • Rajeev K. Varshney,
  • Zhiyong Liu,
  • Daowen Wang,
  • Guangwei Li

摘要

Lipoxygenases (LOXs) play vital roles in plant growth and defense. In this study, through genomic and molecular analyses, we discover a major LOX gene (LOX-A4) differentially expressed in Triticum urartu (Tu), the diploid progenitor of A subgenome in polyploid wheat. Compared to Tu accessions carrying wild type gene (LOX-A4W), those bearing mutant allele (LOX-A4m) show better growth but lower stress tolerance. These differences concur with a wider geographical distribution of LOX-A4m accessions than LOX-A4W materials in the Fertile Crescent. Interestingly, only mutant LOX-A4 alleles are detected in 3,516 worldwide tetraploid and hexaploid wheat lines; restoring LOX-A4W expression in common wheat inhibits growth but enhances stress tolerance. Furthermore, genome-wide identity-by-state analysis reveals that polyploid wheat A subgenome is more related to the A genome in 13 LOX-A4m Tu accessions. Thus, our work provides evidence that LOX gene variation shapes plant gene pools and their contributions to polyploid genome formation via regulating growth-defense trade-offs.