Diversity and ecological footprint of Global Ocean RNA viruses 作者：Guillermo Dominguez-Huerta, Ahmed A. Zayed, James M. Wainaina , Jiarong Guo, Funing Tian, et al. 期刊：Science：2022/06/09 DNA viruses are increasingly recognized as influencing marine microbes and microbe-mediated biogeochemical cycling. However, little is known about global marine RNA virus diversity, ecology, and ecosystem roles. In this study, we uncover patterns and predictors of marine RNA virus community- and “species”-level diversity and contextualize their ecological impacts from pole to pole. Our analyses revealed four ecological zones, latitudinal and depth diversity patterns, and environmental correlates for RNA viruses. Our findings only partially parallel those of cosampled plankton and show unexpectedly high polar ecological interactions. The influence of RNA viruses on ecosystems appears to be large, as predicted hosts are ecologically important. Moreover, the occurrence of auxiliary metabolic genes indicates that RNA viruses cause reprogramming of diverse host metabolisms, including photosynthesis and carbon cycling, and that RNA virus abundances predict ocean carbon export. (导读 J.T.) 全球海洋 RNA 病毒的多样性、生态学和在生态系统中的作用尚不清楚。本研究揭示了海洋 RNA 病毒的四个生态区、在纬度和深度上的多样性模式，以及与环境因素的关联性。海洋RNA 病毒的研究结果与共同采样的浮游生物的分析结果部分吻合，和极地生态环境有意想不到的高度相互作用。此外，辅助代谢基因的出现说明，RNA 病毒能导致宿主重编代谢过程，包括光合作用和碳循环，且 RNA 病毒的丰度可预测海洋的碳输出。 |
