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| Main Authors: | , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Journal of applied microbiology
2026
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/41700706/ |
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Table of Contents:
- Genome analysis and reductive dehalogenase expression of two organohalide-respiring Halodesulfovibrio strains isolated from estuarine sediments. Liu, Jie Kerkhof, Lee J Häggblom, Max M Geologic Sediments Estuaries Deltaproteobacteria Phylogeny Genome, Bacterial Bacterial Proteins Oxidoreductases Organohalide-respiring bacteria, which utilize organohalides as electron acceptors for energy conservation, play an important role in the global halogen cycle. Organobromine compounds, both natural and anthropogenic, are prevalent in marine habitats, and we therefore aimed to characterize debrominating bacteria from estuarine and marine habitats. We isolated two anaerobic debrominating bacteria, strain AK and strain HS, of the family Desulfovibrionaceae (in the phylum Thermodesulfobacteriota) from estuarine sediments in New Jersey, USA. Their growth was supported by lactate as a carbon source and 2,6-dibromophenol or sulfate as an electron acceptor, but not lactate alone, indicating that respiratory reductive dehalogenation or sulfate reduction is used for energy generation. In addition to 2,6-dibromophenol, these two strains can also dehalogenate a variety of other brominated compounds. Debrominating activity was not influenced by the presence of sulfate or exogenous cobalamin. Whole genome comparison indicates that these two strains share high similarity with an average nucleotide identity (ANI) of 97.8% and share low similarity (ANI This study expands our knowledge about the organohalide respiring potential of marine and estuarine Thermodesulfobacteriota.