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跨代适应酸性海水和海的基因表达模式的跨代适应

Akira Iguchi¹, Kodai Gibu², Makiko Yorifuji²

¹Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan; Research laboratory on environmentally-conscious developments and technologies [E-code], National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan.

The Science of the total environment

|April 20, 2024

概括

父母海适应海洋酸化改善了后代的生存和生长. 基因表达分析显示,第二代Mesocentrotus nudus的第二代具有显著的跨代适应性.

科学领域:

海洋生物学海洋生物学
生态生态学生态生态学
基因组学就是基因组学.

背景情况:

海洋酸化对海洋化生物构成重大威胁.
了解跨代反应对于预测未来生态系统影响至关重要.
可食用的海 Mesocentrotus nudus 在生态和经济上都很重要.

研究的目的:

为了研究暴露在酸性海水中的Mesocentrotus nudus幼虫的跨代适应.
评估父母适应对后代生存,生长和基因表达的影响.
为了确定先前暴露是否为后代提供了生存优势.

主要方法:

两代的养殖实验中使用了Mesocentrotus nudus.
暴露于逐渐酸化的海水条件.
对幼虫的形态观测和体型测量.
使用RNA测序 (RNA-seq) 进行全面的基因表达分析.

主要成果:

来自与酸性海水相适应的父母的幼虫的生存率更高.
在酸性条件下,适应后代的身体尺寸减少.
基因表达模式在对照组和酸性海水组之间有显著差异.
与非适应和对照组相比,来自适应父母的幼虫表现出不同的基因表达特征.

结论:

父母适应的积极转移效应提高了后代对海洋酸化的抵抗力.
跨代适应会显著改变Mesocentrotus nudus幼虫的基因表达.
这些发现凸显了海洋无脊椎动物面临气候变化的进化适应潜力.

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