一个以SLEIN2为中心的表观遗传网络平衡了西红的水果成熟和天生的免疫力
Wei Huang1,2, Yan Xu3,4, Yali Song5
1Key Laboratory of Genomics, Ministry of Agricultural, BGI Research, Shenzhen, 518083, China.
The Plant journal : for cell and molecular biology
|September 18, 2025
概括
乙烯信号通过通过SLAGO4A/B-SlEIN2-SlALKBH2模块控制DNA甲基化,平衡成熟和免疫力来调节西红果的成熟.
科学领域:
- 植物分子生物学 植物分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 果实成熟 果实成熟
背景情况:
- 乙烯和DNA/RNA甲基化是水果成熟的关键调节剂.
- 甲基脱甲酶 SlALKBH2 影响 SlDML2 的 mRNA 稳定性,但乙烯-表观遗传相互作用是未知的.
研究的目的:
- 阐明在番茄果实成熟过程中的乙烯信号和表观遗传修饰之间的相互作用.
- 研究SLEIN2在调节SLDML2表达和DNA甲基化中的作用.
主要方法:
- 在与乙烯相关的突变体 (slein2, sleil) 中对SLDML2表达的分析.
- 调查SLEIN2与SLALKBH2.2的相互作用.
- 通过基因沉默评估SLAGO4A/B在野生类型和类水果中的作用.
主要成果:
- SlEIN2在转录后调节SLDML2的表达,并影响成熟调节基因促进体中的不对称CHH甲基化.
- SlEIN2 与 SlALKBH2 相互作用,促进 SlDML2 的表达.
- SlAGO4A/B在果中升级;它们的沉默导致过早成熟和亡,这表明它们在天生的免疫力中发挥了作用.
结论:
- 乙烯信号利用一种涉及SLAGO4A/B,SLEIN2和SLALKBH2的表观遗传机制来控制番茄果实成熟.
- 这种以乙烯为媒介的表观遗传调节平衡了水果成熟与天生的免疫力.
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