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北方的生态基因组学揭示了海洋盆地的当地适应基因

Per Unneberg¹, Mårten Larsson^2,3, Anna Olsson²

¹Department of Cell and Molecular Biology, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.

Nature communications

|August 1, 2024

概括

北方 (Meganyctiphanes norvegica) 显示对温暖水域的遗传适应,基因变异影响视力和繁殖. 这突显了动物浮游生物适应气候变化的潜力,对海洋生态系统至关重要.

科学领域:

海洋生物学海洋生物学
基因组学就是基因组学.
适应气候变化适应气候变化

背景情况:

鱼是海洋生物的重要食物来源,容易受到全球变暖的影响.
了解动物浮游生物的适应性对于预测生态系统对气候变化的反应至关重要.

研究的目的:

调查北方 (Meganyctiphanes norvegica) 对更温暖环境的局部适应.
描述Meganyctiphanes norvegica的基因组,并评估人口层面的遗传变异.

主要方法:

基因组组装和特征的Meganyctiphanes挪威.
74个来自大西洋和地中海的标本的比较基因组分析.
单核酸多态性 (SNP) 分析以检测适应性分歧.

主要成果:

19Gb的基因组含有重复的基因,由逆转移素的增殖和DNA甲基化形成.
观察到广泛的基因流动,但在数百个基因中检测到适应性分歧的标志.
参与光感受,昼夜调节,繁殖和热耐受性的基因显示适应光和温度.
一种脂质输送基因 (nrf-6) 被确定为生态适应的关键候选者.

结论:

挪威巨虫 (Meganyctiphanes norvegica) 呈现出多基因适应光和温度等环境因素的特征.
种群内的遗传变异很普遍,但分布不均,影响了适应潜力.
描述动物浮游生物的遗传多样性对于预测气候变化影响和告知保护工作至关重要.

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