ZmSNAC1与它的交互伙伴ZmNAC19和ZmCAR11合作,以调节玉米的干旱耐受性
Wentong Shi1, Qingpeng Sun2, Ying Zhao1
1Plant Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China.
Plant physiology and biochemistry : PPB
|December 27, 2025
概括
ZmSNAC1通过调节根部发育和吸水,提高了玉米的干旱耐受性. 这种NAC转录因子直接激活干旱诱导基因,并与其他蛋白质形成复合体,以改善应激适应.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物生理学 植物生理学
- 遗传学 是一个遗传学.
背景情况:
- 干旱压力对全球玉米产量产生了重大影响.
- NAC转录因子对于植物生长和干旱反应至关重要.
- 已知ZmSNAC1是玉米干旱应激反应的积极调节者.
研究的目的:
- 阐明ZmSNAC1在干旱应激耐受性中的分子调节机制.
- 为了识别和描述ZmSNAC1.1.的下游目标基因.
- 研究涉及ZmSNAC1.1.的蛋白相互作用.
主要方法:
- 使用了RNA测序 (RNA-Seq) 和染色体免疫沉测序 (ChIP-Seq).
- 进行了酵母双杂交,双分子光补充 (BiFC) 和共免疫沉 (CoIP) 试验.
- 对目标基因和相互作用蛋白质进行了功能分析.
主要成果:
- ZmSNAC1直接与ZmATL2C和ZmGPT2的促进体中的CGTA元素结合,激活它们的表达.
- 通过ZmSNAC1上调调节E3无酸酶ZmATL2C,从而增强干旱耐受性.
- ZmSNAC1与ZmNAC19和ZmCAR11相互作用,形成一个综合体,协同增强ZmATL2C表达,改善根部发育和吸水.
结论:
- ZmSNAC1在编排蛋白相互作用和下游干旱耐受性基因表达方面发挥着关键作用.
- 通过ZmSNAC1介导的途径优化了玉米的根结构和应激适应.
- 这项研究为开发抗旱玉米品种提供了有价值的分子见解.
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