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假定适应位置显示加利福尼亚特有野生花的平行临床变化

Adriana I Hernández¹, Chelsea D Specht¹

¹School of Integrative Plant Science, Section of Plant Biology and The L.H. Bailey Hortorium, Cornell University, Ithaca, New York, USA.

Molecular ecology

|May 29, 2023

概括

野生种群通过遗传进化来适应气候变化. 这项研究揭示了Calochortus venustus种群在气候梯度上的并行分子适应,显示了重复的进化反应.

科学领域:

进化生物学进化生物学
生态生态学生态生态学
基因组学就是基因组学.

背景情况:

了解过去人口对气候的适应对于预测未来对气候变化的反应至关重要.
野生非模型生物适应的分子基础在很大程度上仍未被探索.
生态专业化可能源于环境变化所驱动的当地适应.

研究的目的:

为了确定选择中的位点,并测量Calochortus venustus种群中等位基频率的临床变异.
为了研究人口特异性对沿着气候梯度选择的反应的分子基础.
为了理解平行和分离的基因进化,以应对气候.

主要方法:

两种Calochortus venustus在平行横断线上的血统进行比较.
识别异常物位对人口结构的定位,并使用基因型与环境的关联.
分析跨越气候梯度的单核酸多态 (SNP).

主要成果:

在分子水平上有生态专业化的证据,发现了与植物适应相关的基因.
与北方气候平行适应,在两个横断段的度上显示出类似的等位基趋势.
东部和西部种群之间的基因进化不同,表明当地适应沿海或内陆息地.

结论:

尽管基因流动,Calochortus venustus种群表现出分子水平的生态专业化.
跨气候类型的重复的等位基因变异表明非模型生物体的并行适应.
该研究提供了对基因机制的见解,这些基因机制是适应不同气候条件的基础.

关键词:

卡洛科尔托斯 (Calochortus) 是一个小鱼类.在GWAS中,GWAS就是GWAS.基基的频率是什么?气候变化导致了临界线.基因型与环境的关联平行进化的平行进化.

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