Nature Climate Change ( IF 30.7 ) Pub Date : 2022-09-29 , DOI: 10.1038/s41558-022-01477-4 Young Hwan Lee, Min-Sub Kim, Minghua Wang, Ramji K. Bhandari, Heum Gi Park, Rudolf Shiu-Sun Wu, Jae-Seong Lee
Plasticity enhances species fitness and survival under climate change. Ocean acidification poses a potential threat to copepods, a major zooplankton group that serves as a key link between the lower and higher trophic levels in the marine environment, yet the mechanisms underlying different adaptive responses remain poorly understood. Here we show that although elevated CO2 can exert negative effects on reproduction of Paracyclopina nana, multigenerational plasticity can enable recovery after three generations. By integrating the methylome and transcriptome with the draft genome and undertaking DNA methylation treatments, we demonstrate the vital role of epigenetic modifications in ocean acidification responses and identify regions associated with reproductive resilience. Our results demonstrate that DNA methylation might play an important role in enhancing species fitness of copepods and that failing to consider phenotypic plasticity could lead to overestimation of species’ vulnerabilities.
中文翻译:
表观遗传可塑性使桡足类能够应对海洋酸化
可塑性增强了气候变化下的物种适应性和生存能力。海洋酸化对桡足类构成潜在威胁,桡足类是一种主要的浮游动物群,是海洋环境中较低和较高营养水平之间的关键联系,但不同适应性反应的机制仍然知之甚少。在这里我们表明,虽然升高的 CO 2会对Paracyclopina nana的繁殖产生负面影响,多代可塑性可以使三代后恢复。通过将甲基化组和转录组与基因组草图整合并进行 DNA 甲基化处理,我们证明了表观遗传修饰在海洋酸化反应中的重要作用,并确定了与繁殖恢复力相关的区域。我们的研究结果表明,DNA 甲基化可能在增强桡足类的物种适应性方面发挥重要作用,而未能考虑表型可塑性可能导致高估物种的脆弱性。