美国俄亥俄州立大学
研究人员发现了海洋RNA病毒群落和"物种"级多样性的模式和预测因素，并将其生态影响从一极扩展到另一极。分析揭示了四个生态区、纬度和深度的多样性模式以及RNA病毒的环境相关因素。这些研究结果只是部分地与共同采样的浮游生物相平行，并显示出意想不到的高度的极地生态相互作用。RNA病毒对生态系统的影响似乎很大，因为预测的宿主在生态学上很重要。此外，辅助代谢基因的出现表明，RNA病毒导致不同宿主代谢的重新编程，包括光合作用和碳循环，并且RNA病毒的丰度能够预测海洋碳输出。
据悉，人们越来越认识到，DNA病毒影响着海洋微生物和微生物介导的生物地球化学循环。然而，人们对全球海洋RNA病毒的多样性、生态学和生态系统作用知之甚少。
附：英文原文
Title: Diversity and ecological footprint of Global Ocean RNA viruses
Author: Guillermo Dominguez-Huerta, Ahmed A. Zayed, James M. Wainaina, Jiarong Guo, Funing Tian, Akbar Adjie Pratama, Benjamin Bolduc, Mohamed Mohssen, Olivier Zablocki, Eric Pelletier, Erwan Delage, Adriana Alberti, Jean-Marc Aury, Quentin Carradec, Corinne da Silva, Karine Labadie, Julie Poulain, Tara Oceans Coordinators§, Chris Bowler, Damien Eveillard, Lionel Guidi, Eric Karsenti, Jens H. Kuhn, Hiroyuki Ogata, Patrick Wincker, Alexander Culley, Samuel Chaffron, Matthew B. Sullivan
Issue&Volume: 2022-06-10
Abstract: 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.
DOI: abn6358
Source: https://www.science.org/doi/10.1126/science.abn6358