在Juglandaceae中识别和分析与RNA干扰途径相关的蛋白质家族
Yuanpeng Fang1, Jianming Wei1, Xin Huang1
1Department of Plant Pathology, College of Agriculture, Guizhou University, 550025 Guiyang, Guizhou, China.
Frontiers in bioscience (Landmark edition)
|October 5, 2023
概括
这项研究确定和分析了核桃基因组中的RNA干扰 (RNAi) 基因家族,揭示了它们的进化模式和表达. 这些发现支持开发核桃RNAi途径以改善繁殖.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- RNA干扰 (RNAi) 对小RNA合成和植物疾病耐药性至关重要.
- 在RNAi中的关键蛋白质包括Dicer-like (DCL),RNA依赖RNA聚合酶 (RDR),双链RNA结合 (DRB) 和Argonaute (AGO).
- 核桃 (Juglans regia) 是Juglandaceae家族中的一个重要的木质植物.
研究的目的:
- 在核桃基因组中识别和分析DCL,RDR,DRB和AGO基因家族.
- 阐明这些RNA相关蛋白质的进化,结构和功能差异化.
- 通过育种为改善核桃RNAi途径提供基础.
主要方法:
- 集成的网络资源,结构分析和转录组数据.
- 在Juglans regia基因组内分析了基因家族.
- 研究了RNA相关蛋白质的进化关系和功能多样化.
主要成果:
- 在核桃基因组中确定了5个DCL,13个RDR,15个DRB和15个AGO基因.
- 这些基因编码保存域,并表现出类似的亚细胞分布.
- 核桃AGO蛋白显示三类和七个子类;RDR有四个类别;DRB有六个;DCL有四个组.
- 异常的RDR1副本数 (9) 在染色体16上分散的集群.
- 净化选择驱动了核桃中的基因创造.
- 观察到与其他木兰属植物的相似之处.
- 在各种组织和压力下,证明了RNA相关基因的丰富和选择性表达.
结论:
- 首次全面发现和分析Juglandaceae家族 (核桃) 中DCL,RDR,DRB和AGO基因家族.
- 关于这些基因家族的进化,结构和表达的初步见解.
- 建立了对于子RNAi路径的开发和繁殖的基础理解.
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