Rhodothermus clarus sp. nov., a strictly aerobic, thermophilic bacterium isolated from a terrestrial hot spring
2008
Tanaka, R.(Mie Univ., Tsu (Japan)) | Sako, Y. | Maeda, H.
A thermophilic, strictly aerobic, heterotrophic bacterium (AR3sup(T)) was isolated from a terrestrial hot spring at Arima, Hyogo prefecture, Japan. The cells were Gram-negative, non-spore-forming, and rod-shaped, about 0.6-1.2 microm in diameter, and 3.0-5.0 microm long. Flagella were not observed, and also motility was not observed. The isolate grew at temperatures between 43 and 80degC. The new isolate grew over the salinity range of 0 to 8.0% (w/v), and the pH range of pH 5.5 to 9.2. The G + C content of the genomic DNA of the new isolate was 66 mol%. Physiological properties and sequence analysis of the 16S rRNA gene, as well as DNA-DNA hybridization experiments, indicated that the isolate represents a new species of the genus Rhedothermus for which the name Rhodothermus clarus is proposed. The type strain is AR3sup(T) (=JCM 13927sup(T)=DSM 18403sup(T)).
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