在近距离3' UTR中的表观遗传开关重编程TaFAR1-L在叶病原发生期间在小麦中的时间表达
Uzma Afreen1, Shailendra Kumar Jha2, Kunal Mukhopadhyay1
1Department of Bioengineering and Biotechnology, Birla Institute of Technology, Ranchi, Jharkhand, India.
Physiologia plantarum
|October 19, 2025
概括
小麦鲜红色受损反应1 (FAR1) 基因调节在叶子生中进行了研究. 耐性小麦的脱甲基增强了FAR1的表达,这表明FAR1有助于耐性,并且表观遗传标记可以控制其表达.
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.
- 小麦遗传学 小麦遗传学
背景情况:
- 非编码DNA的调节作用经常被低估.
- 远红色受损反应1 (FAR1) 是一种转录因子,对光信号和防御至关重要.
- 小麦FAR1基因调节,特别是在病原体攻击期间,仍然在很大程度上没有特征.
研究的目的:
- 研究3' UTR序列的调控作用和小麦FAR1 (TaFAR1-L) 基因的表观遗传修饰.
- 解读TaFAR1-L在小麦叶病原发生过程中的重要性.
- 探索表观遗传修饰作为TaFAR1-L.调控标记物的潜力.
主要方法:
- 基因组挖掘用于在小麦中识别TaFAR1-L同类分子.
- 识别和网络分析针对TaFAR1-L.L.的叶子生反应小RNA.
- 对TaFAR1-L与相关物种的家族遗传学分析.
- 在TaFAR1-L-15.5的3' UTR中分析CpG位点甲基化状态.
主要成果:
- 在小麦亚基因组中确定了19个TaFAR1-L同类基因.
- 确定了针对TaFAR1-L的对叶子生反应的miRNA.
- 在耐药小麦注射后3' UTR CpG位点的显著去甲基化.
- 在耐药系中升调TaFAR1-L表达和降调TamiR-142,与敏感系形成鲜明对比.
结论:
- 塔法1-L可能作为小麦叶耐受性的积极调节剂.
- 在近端3' UTR cis元素中的细胞因子甲基化可能会控制TaFAR1-L的表达.
- 在非编码地区的表观遗传修饰为作物改进提供了潜在的目标.
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