进化和功能洞察米的普遍压力蛋白质,以应对无生物压力
Hong Lang1, Yuxi Jiang1, Yan Xie1
1School of Agriculture, Jilin Agricultural Science and Technology College, Jilin 132101, China.
Biology
|October 29, 2025
概括
米中的通用压力蛋白 (USP) 基因是适应环境压力的关键. 这项研究确定了46个OsUSP基因,揭示了它们在激素信号和应激反应中的作用,其中一些显示出广泛的弹性.
科学领域:
- 植物生物学 植物生物学
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 普世应激蛋白 (USP) 家族对于植物应激适应至关重要.
- 了解大米USP (OsUSP) 的进化动态和监管机制对于作物改进至关重要.
研究的目的:
- 在大米 (Oryza sativa) 中进行OsUSP基因家族的全基因组识别和表征.
- 用综合生物信息学方法阐明OSUSP在非生物应激反应中的作用.
主要方法:
- 在11个大米染色体中对46个OsUSP基因进行全基因组识别和表征.
- 遗传学分析,保存图案/域架构分析和进化分析 (共线性和合成).
- 关键调节元素分析,表达特征 (组织特异性和压力诱导) 和蛋白质与蛋白质相互作用 (PPI) 分析.
主要成果:
- 确定了46个具有不同蛋白质特性的OsUSP基因,并将它们分为三个子家族.
- 遗传学和进化分析表明,单种植物的功能性保护以及与二种植物的谱系特异性分歧.
- 关键调节元件表明在ABA,MeJA,干旱和缺氧信号中发挥作用;表达特征分析显示了24个OSUSP的组织特异性模式和压力诱导的上调调节.
- LOC_Os02g54590和LOC_Os05g37970对所有测试的压力表现出广泛的响应;PPI分析表明与参与应激反应和酸化的Leo1/TPR域蛋白相互作用.
结论:
- 这项研究提供了全面的见解OsUSP基因家族在米中的结构,进化和功能.
- OsUSPs与荷尔蒙和非生物压力信号通路有关,有助于应激适应.
- 确定了像LOC_Os02g54590和LOC_Os05g37970这样的OsUSP关键候选者,为培育适应气候的米品种提供了潜力.
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