血管种子在陆地到水中过渡期间的逐渐基因组简化和融合适应
Liangyu Guo1, Liufan Yin1, Chengyan Sun1
1National Key Laboratory for Development and Utilization of Forest Food Resources, Zhejiang A&F University, Hangzhou 311300, China.
Current biology : CB
|August 29, 2025
概括
水生植物多次从陆地植物进化,经历了与生长和防御功能减少有关的基因家族收缩. 气候变化可能会影响它们的未来息地.
科学领域:
- 进化生物学
- 生态学
- 基因组学
背景情况:
- 水生苗在全球生态系统中起着至关重要的作用.
- 在苗中发生了多次独立的陆地到水中转变,但模式尚不清楚.
研究的目的:
- 调查苗中陆地到水中转变的进化模式.
- 确定影响这些转变及其分布的遗传和环境因素.
- 预测气候变化对水生植物进化和息地的影响.
主要方法:
- 分析了33万多种种子和1001个基因组.
- 整合生态环境数据集
- 增强知识的机器学习和生物地理分析.
主要成果:
- 至少发现了132个陆地到水域的转变和86个逆转.
- 陆地到水域的转变与232个基因家族的收缩有关,影响器官生长,发育和防御等功能.
- 降水和海拔,而不是温度,主要影响水生物种的分布; 历史冷却影响水生植物的减少,而变暖可能扩大息地.
结论:
- 提供了水生植物进化的分子框架.
- 突出了基因家族收缩作为水生适应的一个关键进化机制.
- 表明水生植物对持续的气候变化有复杂的反应,可能会扩大息地,但也会增加干旱风险.
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