玉米ZmWRKY71基因通过反应性氧物种恒温来积极调节干旱耐受性
Zhongxian Ma1, Yue Jia1, Yongwei Min1
1National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
Plant physiology and biochemistry : PPB
|December 17, 2024
概括
玉米ZmWRKY71转录因子通过调节应激反应基因,增强干旱耐受性. 过度表达提高了生存率,而突变增加了敏感性,突出了它在玉米抗旱能力方面的积极作用.
科学领域:
- 植物分子生物学 植物分子生物学
- 遗传学 是一个遗传学.
- 生物化学 生化学
背景情况:
- 干旱压力显著影响作物产量和植物发展.
- WRKY转录因子是植物对非生物应激反应的关键调节者.
- 了解这些监管机制对于提高作物弹性至关重要.
研究的目的:
- 识别和表征一种涉及干旱应激反应的新型玉米WRKY基因.
- 阐明ZmWRKY71在赋予干旱耐受性的作用.
- 通过育种提高玉米干旱耐受性的理论基础.
主要方法:
- 基因识别和表达分析 (qRT-PCR).
- 亚细胞局部化和转录活动测试 (酵母).
- 酵母和阿拉比多普西斯的异质表达,以及玉米的基因突变.
- 在干旱压力下进行生理和生化分析.
- RNA测序和分子相互作用测定 (Y1H,DLR,EMSA).
主要成果:
- ZmWRKY71,一组I WRKY基因,在玉米中是根主导和干旱诱导的.
- 过度表达ZmWRKY71增强了酵母和阿拉比多普西斯的干旱耐受性,改善了生存率并减少了氧化损伤.
- 玉米中的ZmWRKY71突变增加了干旱敏感性,反应性氧物种的积累和马隆迪甲含量.
- ZmWRKY71直接与ZmPOD42促进体中的W盒元素结合,调节下游基因表达.
结论:
- ZmWRKY71积极调节玉米的干旱耐受性.
- 该基因在干旱应激反应途径中起到关键的转录激活作用.
- ZmWRKY71代表了一种有价值的遗传资源,用于改善玉米育种计划中的抗干旱能力.
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