依赖SlWRKY6的黑激素信号调节光合作用,使番茄具有耐寒性
Guangzheng Wang1, Wangwang An1, Yonghai Zhang1
1College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, China.
Plant cell reports
|December 9, 2025
概括
黑素通过通过SlWRKY6转录因子调节光合作用来增强番茄的耐寒性. 这项研究阐明了黑激素信号如何提高植物对寒冷压力的抵抗力.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 寒冷压力显著阻碍作物生长,特别是在非季节栽培期间,通过损害光合作用.
- 黑素 (MT) 应用改善了植物的耐寒性,但其在维持光合作用功能的确切作用在寒冷条件下尚未完全理解.
研究的目的:
- 研究转录因子SlWRKY6在番茄对寒冷应激反应和黑激素信号传递中的作用.
- 阐明黑素增强番茄植物耐寒性和光合作用性能的调节机制.
主要方法:
- RNA测序 (RNA-seq) 用于在寒冷压力下识别对黑色素敏感基因.
- 病毒诱导的基因沉默 (VIGS) 以功能验证SlWRKY6.6的作用.
- 测量光合作用效率 (例如,光系统II光化学效率) 和碳同化.
主要成果:
- 黑色素治疗提高了光系统II的效率,并在冷应力下稳定了卡尔文周期.
- SlWRKY6被确定为在寒冷条件下光合作用的积极调节者,受到黑素的直接影响.
- 沉默SlWRKY6损害了光合作用和降低了寒冷耐受力,这些效应在一定程度上被氨酸的应用所挽救.
结论:
- 转录因子SlWRKY6通过调节光合作用途径,充当番茄中黑色素诱导的寒冷耐受性的关键调解者.
- 黑素通过SlWRKY6增强番茄的寒冷适应性,为改善作物对环境压力的抵抗力提供了新的策略.
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