Abstract
A novel, extremely thermophilic bacterium was isolated from a shallow marine hydrothermal vent at depth of 22 m in Tachibana Bay, Nagasaki Prefecture, Japan. Cells were gram-negative, non-spore-forming, motile rods. Growth was observed between 52 and 78 °C (optimum 70 °C), pH 5 and 8 (optimum pH 7) and 0–4.5% NaCl (optimum 1.0%). The isolate was a strictly aerobic heterotroph utilizing yeast extract and trypticase peptone. The G+C content of the genomic DNA is 69 mol%. Analysis of 16S rDNA sequences indicated that strain Ts1a is closely related to Thermaerobacter marianensis. The differences in physiology and DNA-DNA similarity between strain Ts1a and T. marianensis showed that strain Ts1a represents a new species of Thermaerobacter. The type strain of T. nagasakiensis is strain Ts1a (=JCM11223, DSM 14512).
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Nunoura, T., Akihara, S., Takai, K. et al. Thermaerobacter nagasakiensis sp. nov., a novel aerobic and extremely thermophilic marine bacterium. Arch Microbiol 177, 339–344 (2002). https://doi.org/10.1007/s00203-002-0398-2
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DOI: https://doi.org/10.1007/s00203-002-0398-2