Journal
SCIENCE
Volume 326, Issue 5952, Pages 578-582Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1175309
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Funding
- U. S. Department of Energy's Office of Science, Biological, and Environmental Research Program
- University of California, Lawrence Berkeley National Laboratory, Lawrence Livermore National Laboratory [DE-AC02-05CH11231, DE-AC52-07NA27344]
- Los Alamos National Laboratory [DE-AC02-06NA25396]
- Natural Sciences and Engineering Research Council (NSERC) of Canada [328256-07, STPSC 356988]
- Canada Foundation for Innovation (CFI) [Canada Foundation for Innovation (CFI) 17444]
- Canadian Institute for Advanced Research ( CIFAR)
- Center for Bioinorganic Chemistry (CEBIC)
- NSERC
- Killam Trust
- Tula Foundation-funded Centre for Microbial Diversity and Evolution (CMDE)
- DNA DataBank of Japan and European Molecular Biology Laboratory
- [ACSG00000000]
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Oxygen minimum zones, also known as oceanic dead zones, are widespread oceanographic features currently expanding because of global warming. Although inhospitable to metazoan life, they support a cryptic microbiota whose metabolic activities affect nutrient and trace gas cycling within the global ocean. Here, we report metagenomic analyses of a ubiquitous and abundant but uncultivated oxygen minimum zone microbe (SUP05) related to chemoautotrophic gill symbionts of deep-sea clams and mussels. The SUP05 metagenome harbors a versatile repertoire of genes mediating autotrophic carbon assimilation, sulfur oxidation, and nitrate respiration responsive to a wide range of water-column redox states. Our analysis provides a genomic foundation for understanding the ecological and biogeochemical role of pelagic SUP05 in oxygen-deficient oceanic waters and its potential sensitivity to environmental changes.
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