Gene Expression Changes and Community Turnover Differentially Shape the Global Ocean Metatranscriptome
Gene Expression Changes and Community Turnover Differentially Shape the Global Ocean Metatranscriptome
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DOI：
10.1016/j.cell.2019.10.014
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发表时间：
2019-11-14
期刊：
影响因子：
64.5
通讯作者：
Wincker, Patrick
中科院分区：
文献类型：
--
作者：
Salazar, Guillem;Paoli, Lucas;Wincker, Patrick
海洋微生物群落强烈地影响着地球的生物地球化学、食物网和气候。尽管最近在了解其分类学和基因组组成方面取得了进展，但对其转录组如何在全球范围内变化知之甚少。在这里，我们提出了一个数据集的187个元转录组和370个宏基因组从126个全球分布的采样站，并建立了一个资源的4700万个基因研究社区水平的转录组从极点到极点的深度层。我们研究基因表达的变化和社区营业额的基本机制，形成社区转录组沿着这些轴的环境变化，并显示他们的个人贡献不同的多个生态地球化学相关的过程。此外，我们发现基因表达变化的相对贡献是显着低于在极地比在非极性沃茨和假设，在极地地区，在社区活动的变化，以应对海洋变暖将驱动更强烈的生物组成的变化比基因调控机制。
Ocean microbial communities strongly influence the biogeochemistry, food webs, and climate of our planet. Despite recent advances in understanding their taxonomic and genomic compositions, little is known about how their transcriptomes vary globally. Here, we present a dataset of 187 metatranscriptomes and 370 metagenomes from 126 globally distributed sampling stations and establish a resource of 47 million genes to study community-level transcriptomes across depth layers from pole-to-pole. We examine gene expression changes and community turnover as the underlying mechanisms shaping community transcriptomes along these axes of environmental variation and show how their individual contributions differ for multiple biogeochemically relevant processes. Furthermore, we find the relative contribution of gene expression changes to be significantly lower in polar than in non-polar waters and hypothesize that in polar regions, alterations in community activity in response to ocean warming will be driven more strongly by changes in organismal composition than by gene regulatory mechanisms.