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在经过多倍体化后,血管精子中的RNA结合蛋白的融合和/或并行进化
Liangyu Guo1, Shuo Wang1, Xi Jiao1
1State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China.
The New phytologist
|March 4, 2024
概括
植物中的全基因组复制 (WGD) 促进RNA结合蛋白 (RBPs) 的保留,有助于适应寒冷压力. 这些RBP重新连接基因网络,在全球冷却事件期间增强生存能力.
科学领域:
- 植物进化生物学 植物进化生物学
- 基因组学就是基因组学.
- 分子遗传学 分子遗传学
背景情况:
- 全基因组重复 (WGDs) 与植物通过转录因子 (TFs) 的偏向保留与适应有关.
- 在WGD之后,转录后调节者的作用,特别是RNA结合蛋白 (RBPs),仍然在很大程度上未被探索.
- 了解RBP的演变对于解释植物适应环境变化至关重要.
研究的目的:
- 在WGDs之后,研究RBPs在血管精子中的进化轨迹和适应性作用.
- 探索WGD衍生的RBPs与植物对环境挑战,特别是寒冷压力的反应之间的联系.
- 阐明RBPs在全球降温期间对监管网络进行重新布线的机制.
主要方法:
- 在21种种子种类中进行基因组和转录组数据分析.
- 整合了规律学和古气温数据集.
- 识别和分析正确组,复制基因保留和RBP的功能丰富.
主要成果:
- 数以千计的RBP被确定,在应激反应中具有功能丰富性.
- 在WGD后的多种血管苗中,RBP基因的融合保留与全球冷却时期相关.
- 识别冷诱导的WGD衍生的RBP重复物,包括GRP7/8正态组和相关的TFs,参与重新连接昼夜和冷调节网络.
结论:
- 在WGD之后,RBPs在血管苗中发挥着显著的适应作用,特别是在应对寒冷压力的过程中.
- 特定的RBP和TF重复的同时保留表明在环境压力下的协调网络演变.
- 这项研究增强了对全球环境变化时期植物适应机制的理解.
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