ZmARF1通过调节玉米的横向根部发育来积极调节低应激耐受性
Fengkai Wu1,2,3, Baba Salifu Yahaya1,2,3, Ying Gong1,2,3
1State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, China.
PLoS genetics
|February 5, 2024
概括
玉米转录因子ZmARF1通过改善根结构和调节酸盐运输来增强酸盐应激耐受性. 过度表达ZmARF1可以促进侧向根的发育和酸盐的吸收,这对于缺乏的植物生长至关重要.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 农业科学 农业科学
背景情况:
- (P) 缺乏严重限制了植物生长和生产力.
- 辅酶反应因子 (ARF) 是通过辅酶信号通路对根部发育的关键调节者.
研究的目的:
- 研究转录因子ZmARF1在玉米对低无机酸盐 (Pi) 应激反应中的作用.
- 阐明ZmARF1影响根形态和酸盐耐受性的分子机制.
主要方法:
- 基因表达分析 (转录组学) 以确定下游目标.
- 在玉米中进行基因淘汰和过度表达研究.
- 转录激活测试以确认直接结合和激活.
主要成果:
- ZmARF1过度表达增强了根形态和酸盐应激耐受性.
- ZmARF1直接激活ZmLBD1的表达,这是一种参与横向根部发育的基因.
- ZmARF1积极调节关键的Pi输送器 (ZmPHR1,ZmPHT1;2,ZmPHO2),ZmERF2抑制ZmARF1.1,而ZmERF2则抑制了ZmARF1.1,这两种输送器的作用是非常重要的.
结论:
- ZmARF1是玉米中根部发育和酸盐平衡的关键调节者.
- 通过调节横向根形成和Pi吸收,ZmARF1赋予了低Pi应力耐受性.
- ZmARF1作为一个集成辅酶信号与酸盐饥饿反应的中心节点.
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