来自lncRNAs的非正规开放阅读框架编码功能性微,有助于塑造大米的农学特征
Yu Cheng1, Rui-Rui He1, Jie Jiang1
1Guangdong Provincial Key Laboratory of Plant Resources, State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China.
Developmental cell
|February 11, 2026
概括
科学家们在大米中发现了由长非编码RNA (lncRNAs) 编码的新型微. 这些功能性微通过影响血管捆发展来影响谷物产量,为作物改善提供了新的途径.
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.
- 功能性基因组学是一种功能性基因组学.
背景情况:
- 长非编码RNAs (lncRNAs) 传统上被认为是非编码的,但最近的研究表明它们可以编码功能性.
- 在植物中的lncRNAs (lncORFs) 中识别和检测功能开放读取框架 (ORFs) 提出了重大技术挑战.
研究的目的:
- 在大米基因组中全面识别和描述由IncORFs编码的微.
- 研究这些在米 (Oryza sativa) 中的IncORF衍生微的生物功能和农学相关性.
主要方法:
- 综合分析了119个不同米组织和发育阶段的核糖体概况测序 (Ribo-seq) 数据集.
- 使用1188个质谱数据集和实验方法验证已识别的IncORF微.
- 进化,变异关联和功能增益/丧失分析以评估功能影响.
主要成果:
- 在大米基因组中确定了8,253个潜在的IncORF.
- 通过质谱和实验验证,证实了776个IncORF微的存在.
- 证明特定的微通过调节小血管捆的数量来调节谷物产量.
结论:
- 这项研究通过揭示它们对微的编码能力,扩大了lncRNAs的功能表.
- 已识别的IncORF微是一种宝贵的遗传资源,可以增强大米的农学特征,特别是谷物产量.
- 为在其他植物物种中发现IncORF衍生的提供了强大的框架.
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