乙烯通过棉花 (Gossypium hirsutum L.) 中的GhDREB1/CBF增强了抗寒能力
Yaxin Dong1, Huijuan Ma1, Yanhui Shen1
1State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China.
The Plant journal : for cell and molecular biology
|October 13, 2025
概括
乙烯合成基因GhACO1通过激活GhDREB1/CBF通路来增强棉花的耐寒性. 这种以乙烯为媒介的工艺提高了作物对低温的抵抗力.
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:
- 乙烯在植物发育中的作用是众所周知的,但它对寒冷耐受性的影响在各种作物中各不相同.
- 乙烯对寒冷耐受性的调节作用的分子机制尚未完全理解.
研究的目的:
- 研究乙烯在棉花对低温应激反应中的作用.
- 阐明分子途径,将乙烯合成与棉花的耐寒性联系起来.
主要方法:
- 在寒冷压力下对棉花转录组进行权重基因共同表达网络分析 (WGCNA).
- CRISPR/Cas9,病毒诱导的基因沉默,以及烟草中的过度表达,以研究GhACO1功能.
- 通过CUT&Tag, luciferase 记者基因和酵母单杂交测试来确认基因调节.
主要成果:
- 在应对寒冷压力时,乙烯信号基因被丰富.
- GhACO1的表达增强了植物的耐寒性,而GhDREB1直接调节了GhACO1.1.
- 棉花中GhDREB1的过度表达增加了GhACO1的表达和抗寒性.
结论:
- GhACO1介导的乙烯合成通过GhDREB1/CBF通路积极调节棉花的耐寒性.
- GhDREB1调节了GhACO1以提高耐寒性,为改善作物弹性提供了洞察力.
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