识别米LncRNAs及其在米爆电阻网络中的作用,使用转录组和转录组
Xiaoliang Shan1, Shengge Xia1,2, Long Peng3,4
1State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China.
Plants (Basel, Switzerland)
|September 13, 2025
概括
这项研究确定了新的长非编码RNAs (lncRNAs),通过调节激素通路来增强米爆抗性. 这些发现为开发抗病米品种提供了分子基础.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物病理学 植物病理学
- 基因组学和生物信息学
背景情况:
- 长非编码RNAs (lncRNAs) 在植物免疫力中至关重要,但它们在抗Magnaporthe oryzae (大米爆发) 抗抗米的功能尚不清楚.
- 准确识别lncRNAs对于理解它们在植物防御机制中的调节作用至关重要.
研究的目的:
- 开发一个优化的管道来识别米的lncRNAs,并调查它们在抗M. oryzae的米耐药性中的作用.
- 阐明lncRNAs对大米爆裂耐药性的分子机制,重点关注激素信号通路.
主要方法:
- 整合翻译组和基因组数据以创建一个优化的蛋白质编码数据集.
- 开发了"RiceLncRNA"管道,用于使用链特异性RNA测序 (ssRNA-seq) 数据准确识别lncRNA.
- 采用加权基因共同表达网络分析 (WGCNA) 和竞争性内源性RNA (ceRNA) 网络分析.
主要成果:
- 鉴定了9003个高保证度的米 lncRNA,显著提高了比传统方法的准确性.
- 耐药大米品种中的差异表达的lncRNAs (DEL) 与酸 (SA) 和auxin (IAA) 生物合成有关,而敏感品种显示碳代谢中的丰富.
- 关键的lncRNA可能会作为miRNA海绵,调节类似受体的激酶 (RLKs),耐药性 (R) 蛋白和激素信号通路 (雅斯蒙酸 (JA),乙烯 (ET),IAA).
结论:
- 这项研究提出了一个优化的米lncRNA注释框架,并揭示了在米爆发抵抗中激素信号通路的lncRNA介导调节.
- 这些发现为培育抗病米品种提供了关键的分子洞察力.
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