植物中2个关键的甲基转移酶调节剂子家族的进化轨迹和子功能化
Li-Yao Su1, Zheng-Tai Liu1, Xi-Liang Wang1
1State Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
Plant physiology
|May 7, 2025
概括
这项研究揭示了DNAJ1/2/3和SUVH1/3的进化路径,它们是关键的植物表观遗传调节者. 这些蛋白质通过重复和选择进化,使植物生长和适应性至关重要的功能多样化.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 植物分子生物学 植物分子生物学
- 进化基因组学 进化基因组学
背景情况:
- 基因甲基化是植物中重要的表观遗传标记,影响生长,发育和适应能力.
- 含DNAJ域蛋白 1/2/3 (DNAJ1/2/3) 和SU(VAR) 3-9 HOMOLOG 1/3 (SUVH1/3) 是DNA甲基化的主要调节者.
研究的目的:
- 研究植物中DNAJ1/2/3和SUVH1/3的起源,进化和功能多样化.
- 了解这些调节器是如何在不同的植物谱系中适应和演变的.
主要方法:
- 来自21种藻类和86种陆地植物的基因组数据分析.
- 遗传学分析来追踪进化的历史.
- 结构域分析和表达方式分析.
主要成果:
- DNAJ1/2/3起源于Magnoliopsida;SUVH1/3在中出现并通过逆转换进化.
- 两种蛋白质家族都经历了基因重复和积极选择,导致扩张和分歧.
- 结构域 (DNAJ1/2/3中的PHD指,SUVH1/3中的AT域) 在选择性压力下演变,增强甲基化调节的相互作用.
- 观察到特定于组织的表达模式,在美里系统和活性细胞区域的水平更高.
结论:
- DNAJ1/2/3和SUVH1/3的进化轨迹突出了它们在植物中的适应和多样化.
- 这些调节剂在DNA甲基化和脱甲基化中起着复杂的作用,有助于植物的发育和适应能力.
- 了解它们的进化为植物王国的表观遗传调节提供了洞察力.
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