过度表达DRM2通过调节番茄中的JA信号通路来增加对黄虫的抵抗力
Miaoshuang Zhang1,2, Hongyu Han3, Yani Li1
1College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.
Plant, cell & environment
|September 26, 2025
概括
较低的DNA甲基化增强了番茄对破坏性真菌病原体Botrytis cinerea的抵抗力. 过度表达DRM2通过激活斯酸通路来增强这种抵抗力.
科学领域:
- 植物病理学 植物病理学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- 红虫 (B. cinerea) 显著影响番茄的生产和保质期.
- 已知植物对B. cinerea的防御机制,但表观遗传调节的理解很少.
- 在番茄对真菌病原体的免疫力中DRM2-介导的DNA甲基化的作用尚不清楚.
研究的目的:
- 研究表观遗传调节的作用,特别是通过DRM2的DNA甲基化,在番茄对B. cinerea的耐药性的作用.
- 确定DRM2如何影响植物防御途径,并促进疾病抵抗力.
主要方法:
- 综合的多学科分析,研究番茄的DRM2功能.
- 评估与B. cinerea耐药性相关的全球DNA甲基化水平.
- 分析DRM2过度表达对斯酸 (JA) 积累和信号传递的影响.
主要成果:
- 全球DNA甲基化水平较低的西红对B. cinerea的抗性增加.
- 过度表达DRM2导致高斯酸 (JA) 水平,并激活了JA信号通路.
- 发现DRM2结合了关键JA生物合成基因AOS的促进子,改变了其表观遗传状态.
结论:
- 表观遗传调节,特别是DNA甲基化,对于植物对B. cinerea.免疫力至关重要.
- 通过调节JA通路,DRM2在增强番茄耐药性方面发挥着重要作用.
- DRM2是开发抗病番茄品种的潜在候选基因.
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