ZmDnaJ-ZmNCED6模块通过调节玉米的口腔关闭来积极调节干旱耐受性
Anyi Dong1, Nan Wang1, Tinashe Zenda1
1State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, 071001, China; North China Key Laboratory for Crop Germplasm Resources of Education Ministry, College of Agronomy, Hebei Agricultural University, Baoding, 071001, Hebei, China.
Plant physiology and biochemistry : PPB
|November 21, 2024
概括
热冲击蛋白40 (HSP40) ZmDnaJ通过与ZmNCED6相互作用来增强玉米的干旱耐受性,改善口腔关闭和ABA含量. 这个ZmDnaJ-ZmNCED6模块对于植物应激反应至关重要.
科学领域:
- 植物分子生物学 植物分子生物学
- 压力生理学 压力生理学
- 生物化学 生化学
背景情况:
- 热冲击蛋白 (HSP) 维持蛋白质平衡和细胞保护.
- DnaJ蛋白质是HSP40s的一个子集,是植物的关键应激反应因素.
- 在玉米中,ZmDnaJ被确定为一种新的质细胞局部化的III型HSP40.
研究的目的:
- 描述ZmDnaJ在玉米干旱耐受性中的功能和调节机制.
- 研究ZmDnaJ与参与应激反应的其他蛋白质的相互作用.
- 阐明ZmDnaJ-ZmNCED6模块在ABA信号和干旱适应中的作用.
主要方法:
- 组织特异性表达分析和干旱诱导试验.
- 使用过度表达和CRISPR-Cas9淘汰系统进行基因操纵.
- 生物化学和分子相互作用研究包括酵母二混合 (Y2H),双分子光补充 (BiFC) 和共免疫沉 (Co-IP).
主要成果:
- ZmDnaJ在叶子中表达很高,并且受到干旱压力的强烈诱导.
- 过度表达ZmDnaJ通过口腔关闭增强干旱耐受性和增加ABA含量.
- ZmDnaJ与ABA合成中的关键蛋白质ZmNCED6相互作用,形成一个改善干旱耐受性的模块.
- ZmDnaJ调节了ABA信号转导途径基因,包括ZmPYL10,ZmPP2C44和ZmABI5.5,这些基因包括ZmPYL10,ZmPP2C44和ZmABI5.
结论:
- ZmDnaJ-ZmNCED6模块在提高玉米耐旱性方面发挥着重要作用.
- 在干旱压力条件下,ZmDnaJ有助于细胞保护和适应.
- 针对这个模块提供了一个潜在的策略,以改善作物在干旱环境中的弹性.
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