Decoupling function and taxonomy in the global ocean microbiome
Decoupling function and taxonomy in the global ocean microbiome
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DOI：
10.1126/science.aaf4507
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发表时间：
2016-09-16
期刊：
影响因子：
56.9
通讯作者：
Doebeli, Michael
中科院分区：
文献类型：
--
作者：
Louca, Stilianos;Parfrey, Laura Wegener;Doebeli, Michael
微生物代谢推动地球生态系统中的生物地球化学循环。微生物群落的分类组成在不同的环境中有很大的差异，但这种差异的生态原因在很大程度上仍然未知。我们分析了分类学和功能群落概况，以确定影响全球海洋中海洋细菌和古细菌群落的因素。通过将30万个海洋微生物划分为代谢功能群，我们能够将功能与分类群落差异分离开来。研究发现，环境条件通过形成代谢生态位对海洋微生物群落功能群的分布产生强烈影响，但对单个功能群的分类组成影响较弱。因此，功能群内的功能结构和组成构成了互补的、大致独立的“变异轴”，由明显不同的过程形成。
Microbial metabolism powers biogeochemical cycling in Earth's ecosystems. The taxonomic composition of microbial communities varies substantially between environments, but the ecological causes of this variation remain largely unknown. We analyzed taxonomic and functional community profiles to determine the factors that shape marine bacterial and archaeal communities across the global ocean. By classifying >30,000 marine microorganisms into metabolic functional groups, we were able to disentangle functional from taxonomic community variation. We find that environmental conditions strongly influence the distribution of functional groups in marine microbial communities by shaping metabolic niches, but only weakly influence taxonomic composition within individual functional groups. Hence, functional structure and composition within functional groups constitute complementary and roughly independent "axes of variation" shaped by markedly different processes.