Metagenome of a versatile chemolithoautotroph from expanding oceanic dead zones
Walsh, D.A.; Zaikova, E.; Howes, C.G.; Song, Y.C.; Wright, J.J.; Tringe, S.G.; Tortell, P.D.; Hallam, S.J. (2009). Metagenome of a versatile chemolithoautotroph from expanding oceanic dead zones. Science (Wash.) 326(5952): 578-582. https://dx.doi.org/10.1126/science.1175309
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, meer
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| Auteurs | | Top |
- Walsh, D.A.
- Zaikova, E.
- Howes, C.G.
- Song, Y.C.
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- Wright, J.J.
- Tringe, S.G.
- Tortell, P.D.
- Hallam, S.J.
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| Abstract |
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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