Radiobacillus deserti gen. nov., sp. nov., a UV-resistant bacterium isolated from desert soil

A Gram-stain-positive, aerobic, rod-shaped, non-motile, endospore-forming and UV-resistant bacterial strain, designated strain TKL69 T , was isolated from sandy soil sampled in the Taklimakan Desert. The strain grew at 20–50 °C, pH 6–9 and with 0–12 % (w/v) NaCl. The major fatty acids were anteiso-C 15 : 0 , iso-C 15 : 0 and C 16 : 0 . The only respiratory quinone was MK-7. The cell-wall peptidoglycan was meso -diaminopimelic acid. Diphosphatidyl glycerol, two unidentified aminophospholipids and one unidentified phospholipid were identified as the major polar lipids. Genomic DNA analysis revealed a G+C content of 38.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain TKL69 T has the highest similarity to Salinibacillus xinjiangensis CGMCC 1.12331 T (96.9 %) but belongs to an independent taxon separated from other genera of the family Bacillaceae . Phylogenetic, phenotypic and chemotaxonomic analyses suggested that strain TKL69 T represents a novel species of a new genus, for which the name Radiobacillus gen. nov., sp. nov. is proposed, with the type strain being Radiobacillus deserti TKL69 T (=JCM 33497 T =CICC 24779 T ).