Deinococcus metalli sp. nov., isolated from an abandoned lead-zinc mine.

ABSTRACT

An aerobic, non-motile and Gram-staining-positive bacterial strain (1PNM-19T) was isolated from a lead-zinc ore in an abandoned mine and was investigated in a taxonomic study using a polyphasic approach. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain 1PNM-19T was affiliated to the genus Deinococcus and most closely related to Deinococcus aquatilis DSM 23025T and Deinococcus ficus DSM 19119T. The major respiratory quinone was determined to be menaquinone 8 (MK-8) and the major fatty acids contained summed feature 3 (C16  1ω7c and/or C16  1ω6c) and C16  0. A complex polar lipid profile consisted of different unidentified glycolipids and polar lipids, two unidentified aminolipids, an unidentified phosphoglycolipid, phospholipid and aminophospholipid. The genomic DNA G+C content of strain 1PNM-19T was 71.7 ± 0.1 mol%. Based on data from this taxonomic study, strain 1PNM-19T represents a novel species of the genus Deinococcus, for which the name Deinococcus metalli sp. nov. is proposed. The type strain is 1PNM-19T ( = GIMCC 1.654T = CCTCC AB 2014198T = DSM 27521T).