1887

Abstract

A heavy metal-resistant and dimethyl disulfide-producing bacterial strain, designated 6NM-7, was isolated from wolfram mine tailing, Dayu County, Jiangxi Province, PR China. Strain 6NM-7 was aerobic, Gram-stain-negative and motile by means of a single polar flagellum. Phylogenetic analysis, based on 16S rRNA gene sequences, showed that strain 6NM-7 was affiliated with the genus and was closely related to LMG 28164 (98.8 % 16S rRNA gene sequence similarity), KACC 17471 (98.4 %), KACC 12599 (97.8 %), KACC 14940 (97.3 %), KACC 13771 (97.2 %), CGMCC 1.11014 (97.1 %) and KACC 12505 (97.1 %). The DNA–DNA relatedness values between strain 6NM-7 and its closely related type strains were all below 70 %. The major respiratory quinone was unbiquinone 8 (Q-8) and the major cellular fatty acids consisted of C (33.2 %), summed feature 3 (Cω7 and/or iso-C 2-OH; 21.8 %), C cyclo (20.8 %), Cω7 (7.4 %) and C 3-OH (5.8 %). The major polar lipids consisted of phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. The genomic DNA G+C content of strain 6NM-7 was 66.8 ± 0.6 mol%. On the basis of the results of this polyphasic taxonomic study, strain 6NM-7 should be assigned to a novel species of the genus , for which the name sp. nov. is proposed. The type strain is 6NM-7 ( = DSM 27523 = KCTC 42761).

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2016-01-01
2024-03-28
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