转子子关联的小RNA参与了树的植物防御
Cui Long1,2,3, Yuxin Du1,2,3, Yumeng Guan1,2,3
1National Engineering Research Center of Tree Breeding and Ecological Restoration, Beijing Forestry University, No. 35, Qinghua East Road, Beijing 100083, China.
Plants (Basel, Switzerland)
|April 26, 2025
概括
中国白中的小RNA (sRNA) 对生真菌感染有动态反应,转子子衍生sRNA在植物防御和病原体调节中起着关键作用.
科学领域:
- 植物病原体相互作用
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 像Melampsora larici-populina这样的菌是树的重要病原体.
- 小RNAs (sRNAs) 是植物基因表达的关键调节者,并在防御中发挥作用.
研究的目的:
- 为了研究中国白 (*Populus tomentosa*) 在 *Melampsora larici-populina* 感染期间小RNA (sRNA) 档案的动态变化.
- 了解sRNAs的起源和功能,特别是转子子衍生的siRNAs,在树对真菌病原体的反应中.
主要方法:
- 高通量Illumina测序被用于在两个关键感染阶段 (生物和 urediniospore 发育) 的sRNA进行分析.
- 进行了生物信息分析,以确定sRNA的起源,点和感染阶段之间的变化.
主要成果:
- sRNA集群主要来自转子和伪基区域,感染阶段特定的变异与转子衍生的sRNA相关.
- 转子和基因间区域的24 nt siRNAs随着感染的进展显示出显著的丰度转移.
- 树的sRNA可能会准95%的病原体基因,包括效应基因,在感染期间的向增加.
- 树特异性的miRNAs优先准*NB-LRR*基因,与保存的miRNA不同.
结论:
- sRNA在树对菌的防御中起着重要作用,转子子子衍生的sRNA是关键参与者.
- sRNA - 目标相互作用是有选择性的,病原体因子被积极向.
- 树特有的miRNAs通过准*NB-LRR*基因来促进防御,突出显示了植物免疫力的进化适应.
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