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| Main Authors: | , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
International journal of systematic and evolutionary microbiology
2026
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/41528336/ |
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Table of Contents:
- gen. nov., sp. nov., an anaerobic, facultative mixotrophic, iron(III)-reducing bacterium isolated from the Tianxiu hydrothermal field and the proposal of fam. nov. Ma, Lixuan Liu, Xun Alain, Karine Wang, Di Han, Xiqiu Shao, Zongze Zeng, Xiang Phylogeny RNA, Ribosomal, 16S Bacterial Typing Techniques Base Composition DNA, Bacterial Fatty Acids Hydrothermal Vents Sequence Analysis, DNA Indian Ocean Animals Nucleic Acid Hybridization Seawater Oxidation-Reduction China Ferric Compounds An anaerobic, salt-tolerant, rod-shaped bacterium, strain JL216-2, was isolated from the shell of the hydrothermal gastropod in the Tianxiu hydrothermal field on the Carlsberg Ridge, Indian Ocean. Cells of strain JL216-2 were motile and 0.5×3-6 µm in size. Strain JL216-2 grew at 10-32 °C (optimal 28 °C), pH 6.0-9.0 (optimal pH 7.0) and 0.5-12.0% (w/v) sodium chloride(NaCl, optimal 2.5%). Strain JL216-2 exhibited metabolic versatility, being capable of heterotrophic growth on complex organic compounds. It also performed autotrophic growth by utilizing carbon dioxide (CO₂) fixation or sodium bicarbonate (NaHCO) as the sole carbon source, driven by hydrogen oxidation coupled with Fe(III) reduction. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the strain was most closely related to S502 (90.43% sequence similarity). The genome size of strain JL216-2 was 4.91 Mb, with a G+C content of 39.54 mol%. Phylogenomic analysis and overall genome relatedness indices values indicated a close relatedness of strain JL216-2 to S502 and spp. The combined genotypic and phenotypic data showed that strain JL216-2 represents a novel genus within the order . The type strain is JL216-2 (=MCCC M30262=KACC 23553).