在大米对毒性反应中,brassinosteroid和jasmonate通路之间的协同相互作用
Zaoli Zhang1, Tingting Zhang2, Long Lu3
1Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China.
The Science of the total environment
|September 19, 2024
概括
铜类固醇 (BRs) 和酸 (JA) 协同增强米对 (Cd) 压力的耐受性. BR信号激活JA通路,减少Cd积累和反应性氧物种 (ROS) 以改善植物防御.
科学领域:
- 植物生物学 植物生物学
- 环境科学 环境科学
- 生物化学 生物化学
背景情况:
- 植物激素如氨固醇 (BRs) 和莉酸 (JA) 都与应激反应有关.
- 在大米中的 (Cd) 应激耐受性中,BRs和JA的特定作用和相互作用尚未完全理解.
研究的目的:
- 阐明BRs和JA在Cd压力的米反应中的作用.
- 研究BR和JA信号通路在调解Cd耐受性的相互作用.
主要方法:
- 对BR的外源应用,对BR过度产生突变的分析 (m107),以及对BR信号组件 (OsDLT) 的基因分析.
- 转录组分析以确定差异表达基因 (DEG) 和激素测定.
- 对JA信号缺陷突变体 (osmyc2) 的分析,以评估BR介导的耐受性.
主要成果:
- 外源性BR和BR过度生产提高了米苗中的Cd耐受性.
- 通过调节基因表达,BR信号传递,特别是通过OsDLT,通过调节基因表达减少Cd和活性氧物种 (ROS) 积累.
- BR治疗上调了JA通路基因并增加了JA水平,BR诱导的耐受性取决于JA信号.
结论:
- BR和JA信号通路协同相互作用,在米中赋予Cd耐受性.
- BR通过激活JA通路来增强Cd耐受性,这涉及Cd传输和ROS清理的调制.
- 这项研究提供了对调控植物重金属耐受性的荷尔蒙杂交的见解.
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