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在小麦中,TaCEP15信号级联调节主要根长度和干旱耐受性

Wen Yang¹, Renhan Li¹, Man Feng¹

¹China Agricultural University, Beijing 100193, China.

Science advances

|September 3, 2025

概括

小麦

科学领域:

植物生物学
分子生物学
遗传学

背景情况:

小信号调节植物的应激反应.
干旱压力对全球作物产量产生重大影响.

研究的目的:

研究TaCEP15和TaCEPRL对小麦干旱耐受性的作用.
阐明根生长和应激反应调节的分子机制.

主要方法:

在小麦中发生基因淘汰和过度表达.
蛋白与蛋白的相互作用和酸化试验.
分析主要根的长度和耐旱性.

主要成果:

通过TACEP15和TACEPRL的淘汰,增加了主要根的长度和耐旱性.
这一过程由TaCEP15加剧.
过度表达TaSnRK1α可以改善根的延长和耐旱性.
TabZIP9转录因子抑制TaCEP15的表达,影响根和干旱表型.

结论:

在调节小麦初级根生长方面,TaCEP15-TaCEPRL信号通路至关重要.
这种途径在提高耐旱性方面起着关键作用.
了解这种信号机制有助于提高作物的弹性.

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