Strain JW/WZ-YB58, a thermophilic (42–64 °C), aerobic, alkalitolerant (pH 6.4–9.7), heterotrophic, sporulating, retarded-peritrichously flagellated and slightly curved rod-shaped bacterium, was isolated from the hot spring Zarvarzin II in the East Thermal Field of the Uzon Caldera, Kamchatka (Far East Russia). The isolate tolerated high concentrations of CO. The major membrane phospholipid fatty acids of JW/WZ-YB58 included iso-C (24.5 %), anteiso-C (18.3 %) and iso-C (17.5 %). The G+C content of the genomic DNA is 45 mol% (HPLC method). Based on 16S rRNA gene sequence analysis and physiological properties, isolate JW/WZ-YB58 (=ATCC BAA-1258 =DSM 17740) is proposed as the type strain of sp. nov. In contrast to the type species , a catalase-reaction-positive aerobe, was catalase-reaction-negative; thus the description of the genus is emended to include a catalase-reaction-negative species.


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  1. Mesbah, M., Premachandran, U. & Whitman, W. B.(1989). Precise measurement of the G+C content of deoxyribonucleic acid by high-performance liquid chromatography. Int J Syst Bacteriol 39, 159–167.[CrossRef] [Google Scholar]
  2. Peddie, C. J., Cook, G. M. & Morgan, H. W.(2000). Sucrose transport by the alkaliphilic, thermophilic Bacillus sp. strain TA2.A1 is dependent on a sodium gradient. Extremophiles 4, 291–296.[CrossRef] [Google Scholar]
  3. Wiegel, J.(1981). Distinction between the Gram reaction and the Gram type of bacteria. Int J Syst Bacteriol 31, 88[CrossRef] [Google Scholar]
  4. Xue, Y., Zhang, X., Zhou, C., Zhao, Y., Cowan, D. A., Heaphy, S., Grant, W. D., Jones, B. E., Ventosa, V. & Ma, Y.(2006).Caldalkalibacillus thermarum gen. nov., sp. nov., a novel alkalithermophilic bacterium from a hot spring in China. Int J Syst Evol Microbiol 56, 1217–1221.[CrossRef] [Google Scholar]
  5. Yumoto, I., Yamazaki, K., Sawabe, T., Nakano, K., Kawasaki, K., Ezura, Y. & Shinano, H.(1998).Bacillus horti sp. nov., a new Gram-negative alkaliphilic bacillus. Int J Syst Bacteriol 48, 565–571.[CrossRef] [Google Scholar]
  6. Zhao, W., Weber, C., Zhang, C. L., Romanek, C. S., King, G. M., Mills, G., Sokolova, T. & Wiegel, J.(2006).Thermalkalibacillus uzonensis gen. nov. sp. nov., a novel aerobic alkali-tolerant thermophilic bacterium isolated from a hot spring in Uzon Caldera, Kamchatka. Extremophiles 10, 337–345.[CrossRef] [Google Scholar]

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