1887

Abstract

The creamy white to beige, aerobic, non-motile, ovoid to rod-shaped, Gram-stain-negative strain, Cd-10, was isolated from heavy-metal-contaminated sludge from a decantation basin of a heavy metal processing factory based on its ability to tolerate CdCl in the cultivation medium. In the reconstruction of its phylogeny based on 16S rRNA gene sequences, strain Cd-10 clustered with species of the genera , , and within the family . Its 16S rRNA gene sequence exhibited 96.32 % pairwise similarity to the type strain of , 95.3 % to that of , followed by (95.10 %), (94.88 %), and (both 94.81 %). The major respiratory quinone was Q-10 accompanied by Q-9, the fatty acid profile consisted predominantly of Cω7, C, C and Cω7, the major polar lipids were phosphatidylglycerol, phosphatidylmethylethanolamine, phosphatidylcholine and diphosphatidylglycerol. An analysis of the percentage of conserved proteins deduced from draft or complete genomic sequences of strain Cd-10 and representatives of its closest relatives suggested that strain Cd-10 is a member of a novel genus within the family for which we propose the name . Strain Cd-10 (=DSM 103618=NCCB 100645) is the type strain of gen. nov., sp. nov., the type species of the genus gen. nov.

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2019-08-01
2019-08-22
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