水团特异性基因主导南大洋微生物组
Water mass specific genes dominate the Southern Ocean microbiome
Emile Faure · Jolann Pommellec · Cyril Noel · Alexandre Cormier · Lisa-Marie Delpech · A. Murat Eren · Antonio Fernandez-Guerra · Chiara Vanni · Marion Fourquez · Marie-Noëlle Houssais · Ulysse Guyet · Corinne Da Silva · Frederick Gavory · Aude Perdereau · Karine Labadie · Patrick Wincker · Julie Poulain · Christel Hassler · Yajuan Lin · Nicolas Cassar · Loïs Maignien
1. 信息
期刊Nature Communications / Nat Commun
类型Article
发表2026-03-09 （online）
卷期页17(1): 2025
收录2026-10-04
被浏览…
关键词water mass structurepolar adaptationorganic matter consumptionPelagibacterplankton ecologyAntarctic Circumnavigation Expedition
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2. 摘要
南大洋在调节全球生物地球化学循环和气候方面发挥着关键作用，然而，维持其生物活性的微生物基因仍鲜为人知。我们构建了一个微生物基因集合，该集合来自南极环航考察期间采集的218个宏基因组样本，其中大部分基因在功能数据库中缺失。38%的基因甚至在现有的海洋参考基因目录中也找不到同源基因，这构成了一个独特的遗传景观。我们发现，南大洋的基因组合与北冰洋具有共同的极地特征，同时又受到南大洋尺度水团结构的影响。我们分析了不同南大洋生物群落的基因组标记，重点关注极地适应细菌对二甲基硫代丙酸（DMSP）的裂解作用、默茨冰间湖中有机物的消耗以及普遍存在的细菌Pelagibacter对极地环境的适应。我们的工作朝着全面了解南大洋浮游生物生态和演化迈出了一步，捕捉到了这片快速变化的海洋中独特的微生物多样性的现状。
原文摘要（English）
The Southern Ocean (SO) plays a key role in regulating global biogeochemical cycles and climate, yet microbial genes sustaining its biological activity remain poorly characterized. We introduce a microbial genes collection from 218 metagenomes sampled during the Antarctic Circumnavigation Expedition, the majority of which are missing from functional databases. 38% even lack homologs in current reference marine gene catalogs, defining a singular genetic seascape. We show that SO gene assemblages exhibit a common polar signature with the Arctic Ocean while being structured by water masses at the SO-scale. We analyze genomic markers of diverse SO biomes, focusing on dimethylsulphoniopropionate (DMSP) cleavage by polar-adapted bacteria, organic matter consumption in the blooming Mertz polynya and adaptation to polar conditions in the ubiquitous bacteria Pelagibacter. Our work takes a step towards a comprehensive understanding of SO’s plankton ecology and evolution, capturing the current state of the unique microbial diversity in this rapidly changing Ocean.
3. 图表
4. 引用
查看 BibTeX
@article{faure2026,
author = {Emile Faure and Jolann Pommellec and Cyril Noel and Alexandre Cormier and Lisa-Marie Delpech and A. Murat Eren and Antonio Fernandez-Guerra and Chiara Vanni and Marion Fourquez and Marie-Noëlle Houssais and Ulysse Guyet and Corinne Da Silva and Frederick Gavory and Aude Perdereau and Karine Labadie and Patrick Wincker and Julie Poulain and Christel Hassler and Yajuan Lin and Nicolas Cassar and Loïs Maignien},
title = {Water mass specific genes dominate the Southern Ocean microbiome},
journal = {Nature Communications},
year = {2026},
volume = {17},
number = {1},
pages = {2025},
doi = {10.1038/s41467-026-69584-w},
publisher = {Springer Science and Business Media LLC},
}· END ·