Journal
FEMS MICROBIOLOGY REVIEWS
Volume 44, Issue 2, Pages 155-170Publisher
OXFORD UNIV PRESS
DOI: 10.1093/femsre/fuz031
Keywords
bacteria; microbial physiology; ecological network; microflora; symbiosis; biotechnology
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Funding
- Centre National de la Recherche Scientifique (CNRS)
- Aix-Marseille Universite (AMU)
- MESR fellowship
- CNRS
- AMU
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The Gram-negative Shewanella bacterial genus currently includes about 70 species of mostly aquatic. -proteobacteria, which were isolated around the globe in a multitude of environments such as surface freshwater and the deepest marine trenches. Their survival in such a wide range of ecological niches is due to their impressive physiological and respiratory versatility. Some strains are among the organisms with the highest number of respiratory systems, depending on a complex and rich metabolic network. Implicated in the recycling of organic and inorganic matter, they are important components of organism-rich oxic/anoxic interfaces, but they also belong to the microflora of a broad group of eukaryotes from metazoans to green algae. Examples of long-term biological interactions like mutualism or pathogeny have been described, although molecular determinants of such symbioses are still poorly understood. Some of these bacteria are key organisms for various biotechnological applications, especially the bioremediation of hydrocarbons and metallic pollutants. The natural ability of these prokaryotes to thrive and detoxify deleterious compounds explains their use in wastewater treatment, their use in energy generation by microbial fuel cells and their importance for resilience of aquatic ecosystems.
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