Abstract
A novel Gram-staining-negative, non-motile and rod-shaped bacterial strain ZQBWT, which was isolated from a diuron-polluted soil collected near Nanjing, PR China, was investigated for its taxonomic position by a polyphasic approach. ZQBWT grew well at pH 6.0-12.0 (optimum, pH 7.0), 26-35 °C (optimum, 30 °C) and up to 0.5 % NaCl (optimally the absence of NaCl) in R2A broth. The major fatty acids of ZQBWT were C18 : 1ω7c (82.7 %) and C18 : 0 (5.3 %). The polar lipid profile included the major compounds phophatidylcholine, phosphatidylglycerol and phosphatidylmethylethanolamine. The only respiratory quinone was ubiquinone Q-10. The G+C content of genomic DNA was 67.0 mol%. Comparisons with 16S rRNA gene sequences revealed that ZQBWT has the highest sequence similarities with members of the genus Tabrizicola (≤95.97 %), followed by Rhodobacter(≤95.96 %) and Falsirhodobacter(95.95 %) which all belong to the family Rhodobacteraceaein the phylum Proteobacteria. Photosynthesis genes pufLM were not found and photosynthesis pigments were not formed in ZQBWT. On the basis of the results from chemotaxonomic, phenotypic and phylogenetic analysis, ZQBWT represents a novel species of a novel genus, for which the name Xinfangfangia soli gen. nov., sp. nov. is proposed. The type strain is ZQBWT (=KCTC 62102T=CCTCC AB 2017177T).
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