4.8 Article

Time-series transcriptomics from cold, oxic subseafloor crustal fluids reveals a motile, mixotrophic microbial community

期刊

ISME JOURNAL
卷 15, 期 4, 页码 1192-1206

出版社

SPRINGERNATURE
DOI: 10.1038/s41396-020-00843-4

关键词

-

资金

  1. Gordon and Betty Moore Foundation [GBMF1609]
  2. NSF [OCE-1062006, OCE-1745589, OCE-1635208]
  3. NASA
  4. NASA Astrobiology Institute
  5. L'Oreal USA For Women in Science Fellowship
  6. Center for Dark Energy Biosphere Investigations [C-DEBI OCE-0939564]

向作者/读者索取更多资源

The microbial community in the oceanic crustal aquifer plays a crucial role in organic carbon oxidation, showing activity, metabolic flexibility, and the ability to adapt to low oxygen conditions, with different anaerobic processes at varying depths within the aquifer.
The oceanic crustal aquifer is one of the largest habitable volumes on Earth, and it harbors a reservoir of microbial life that influences global-scale biogeochemical cycles. Here, we use time series metagenomic and metatranscriptomic data from a low-temperature, ridge flank environment representative of the majority of global hydrothermal fluid circulation in the ocean to reconstruct microbial metabolic potential, transcript abundance, and community dynamics. We also present metagenome-assembled genomes from recently collected fluids that are furthest removed from drilling disturbances. Our results suggest that the microbial community in the North Pond aquifer plays an important role in the oxidation of organic carbon within the crust. This community is motile and metabolically flexible, with the ability to use both autotrophic and organotrophic pathways, as well as function under low oxygen conditions by using alternative electron acceptors such as nitrate and thiosulfate. Anaerobic processes are most abundant in subseafloor horizons deepest in the aquifer, furthest from connectivity with the deep ocean, and there was little overlap in the active microbial populations between sampling horizons. This work highlights the heterogeneity of microbial life in the subseafloor aquifer and provides new insights into biogeochemical cycling in ocean crust.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据