@article{mbs:/content/journal/ijsem/10.1099/ijs.0.006767-0, author = "Slobodkina, G. B. and Kolganova, T. V. and Chernyh, N. A. and Querellou, J. and Bonch-Osmolovskaya, E. A. and Slobodkin, A. I.", title = "Deferribacter autotrophicus sp. nov., an iron(III)-reducing bacterium from a deep-sea hydrothermal vent", journal= "International Journal of Systematic and Evolutionary Microbiology", year = "2009", volume = "59", number = "6", pages = "1508-1512", doi = "https://doi.org/10.1099/ijs.0.006767-0", url = "https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.006767-0", publisher = "Microbiology Society", issn = "1466-5034", type = "Journal Article", abstract = "A thermophilic, anaerobic, chemolithoautotrophic bacterium (designated strain SL50T) was isolated from a hydrothermal sample collected at the Mid-Atlantic Ridge from the deepest of the known World ocean hydrothermal fields, Ashadze field (1 ° 58′ 21″ N 4 ° 51′ 47″ W) at a depth of 4100 m. Cells of strain SL50T were motile, straight to bent rods with one polar flagellum, 0.5–0.6 μm in width and 3.0–3.5 μm in length. The temperature range for growth was 25–75 °C, with an optimum at 60 °C. The pH range for growth was 5.0–7.5, with an optimum at pH 6.5. Growth of strain SL50T was observed at NaCl concentrations ranging from 1.0 to 6.0 % (w/v) with an optimum at 2.5 % (w/v). The generation time under optimal growth conditions for strain SL50T was 60 min. Strain SL50T used molecular hydrogen, acetate, lactate, succinate, pyruvate and complex proteinaceous compounds as electron donors, and Fe(III), Mn(IV), nitrate or elemental sulfur as electron acceptors. The G+C content of the DNA of strain SL50T was 28.7 mol%. 16S rRNA gene sequence analysis revealed that the closest relative of strain SL50T was Deferribacter abyssi JRT (95.5 % similarity). On the basis of its physiological properties and phylogenetic analyses, the isolate is considered to represent a novel species, for which the name Deferribacter autotrophicus sp. nov. is proposed. The type strain is SL50T (=DSM 21529T=VKPM B-10097T). Deferribacter autotrophicus sp. nov. is the first described deep-sea bacterium capable of chemolithoautotrophic growth using molecular hydrogen as an electron donor and ferric iron as electron acceptor and CO2 as the carbon source.", }