蒙古苏格兰松的生态类型分歧通过大效应遗传适应和表型可塑性持续存在
Wuyuntana1, Qihui Fong2, Chong-Yi Ke2
1College of Forestry, Inner Mongolia Agricultural University, Huhhot, 010019, China.
BMC plant biology
|November 27, 2025
概括
蒙古苏格兰松通过遗传适应和表型可塑性的结合来保持独特的生态型,使其能够在不同的环境中壮成长,尽管基因流动. 这种双重战略有助于适应气候变化.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 基因组学就是基因组学.
背景情况:
- 在基因流下长寿针叶树的生态类型分歧对于预测适应性反应至关重要.
- 蒙古苏格兰松在相反的山脉和沙丘息地表现出两种生态型.
- 了解非模型生物体适应的基因组基础是具有挑战性的.
研究的目的:
- 在蒙古苏格兰松生态型中调查基因组分化和基因型与环境的关联.
- 确定适应性分歧是否是由少数具有大影响的位置或多基因转移驱动的.
- 探索遗传适应和表型可塑性在维持生态型差异化的相互作用.
主要方法:
- 没有参考的特定位置放大片段测序 (SLAF-seq) 数据.
- 全基因组单核酸多态 (SNP) 分析.
- 基因型与环境的关联分析.
主要成果:
- 确定了~3%的基因组作为具有强烈生态型差异化的适应异常值.
- 适应性位点和多基因转移被大效应变异所主导.
- 现型差异化涉及水力/机械特征的遗传分歧和生理反应的可塑性.
结论:
- 不同的选择和可塑性在蒙古苏格兰松中保持生态型差异化,尽管基因流量很高.
- 现型可塑性提供了缓冲快速气候变化的缓冲,促进人口的持久性.
- 一种新的无参考方法被证明用于剖析非模型基因组中的适应性架构.
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