1887

Abstract

A thermophilic, alkaliphilic and catalase-positive bacterium, designated strain HA6, was isolated from a hot spring in China. The strain was aerobic and chemo-organotrophic and grew optimally at 60 °C, pH 8.5 and 1.5 % (w/v) NaCl. The cells were Gram-positive rods, forming single terminal endospores. The predominant cellular fatty acids were iso-C and iso-C. The cell-wall peptidoglycan contained -diaminopimelic acid. The genomic DNA G+C content was 45.2 mol%. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that strain HA6 formed a distinct lineage within the family and was most closely related to K13 and DSM 4216, with sequence similarities of 91.8 and 93.1 %, respectively. On the basis of its physiological and molecular properties, strain HA6 should be placed in a novel genus and species, for which the name gen. nov., sp. nov. is proposed. The type strain of is strain HA6 (=CGMCC 1.4242=JCM 13486).

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2006-06-01
2019-12-13
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