Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar.
Sci Adv. 2023 Jun 23;9(25):eadg4011. doi: 10.1126/sciadv.adg4011.
Marine-terrestrial transition represents an important aspect of organismal evolution that requires numerous morphological and genetic innovations and has been hypothesized to be caused by geological changes. We used talitrid crustaceans with marine-coastal-montane extant species at a global scale to investigate the marine origination and terrestrial adaptation. Using genomic data, we demonstrated that marine ancestors repeatedly colonized montane terrestrial habitats during the Oligocene to Miocene. Biological transitions were well correlated with plate collisions or volcanic island formation, and top-down cladogenesis was observed on the basis of a positive relationship between ancestral habitat elevation and divergence time for montane lineages. We detected convergent variations of convoluted gills and convergent evolution of associated with montane transitions. Moreover, using CRISPR-Cas9 mutagenesis, we proposed that potentially regulates the development of exites, such as talitrid gills. Our results provide a living model for understanding biological innovations and related genetic regulatory mechanisms associated with marine-terrestrial transitions.
海洋-陆地过渡代表了生物进化的一个重要方面，需要许多形态和遗传创新，并被假设是由地质变化引起的。我们使用全球范围内具有海洋-沿海-山地现存物种的端足类甲壳动物来研究海洋起源和陆地适应。利用基因组数据，我们证明了海洋祖先在渐新世到中新世期间多次殖民山地陆地生境。生物过渡与板块碰撞或火山岛形成密切相关，并且在基于山地谱系的祖先栖息地海拔与分化时间之间存在正相关关系的情况下观察到自上而下的分支发生。我们检测到了卷曲鳃的趋同变异和与山地过渡相关的 的趋同进化。此外，使用 CRISPR-Cas9 诱变，我们提出了 可能调节外室的发育，例如端足类甲壳动物的鳃。我们的研究结果为理解与海洋-陆地过渡相关的生物创新和相关遗传调控机制提供了一个活体模型。
