Roseivivax marinus sp. nov., isolated from deep water
2014
Dai, Xiaofeng | Shi, Xiaochong | Gao, Xin | Liu, Jingli | Zhang, Xiao-Hua
A Gram-stain-negative, strictly aerobic, non-motile, cream, long rod-shaped bacterium, designated strain ZL136T, was isolated from deep water of the South China Sea. Phylogenetic analysis based on 16S rRNA gene sequences indicated that this strain belonged to the genus Roseivivax with highest sequence similarity to Roseivivax halodurans OCh 239T (97.0 %), followed by Roseivivax isoporae sw-2T (96.9 %). Growth occurred at 4–37 °C (optimum 32 °C), pH 6.0–10.0 (optimum 8.0) and in the presence of 0–12 % (w/v) NaCl (optimum 3–4 %) in marine broth 2216. Strain ZL136T did not produce bacteriochlorophyll a. The predominant fatty acids were C18 : 1ω7c and/or C18 : 1ω6c, C18 : 0, C16 : 0 and 11-methyl C18 : 1ω7c. The major polar lipids of ZL136T were phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and an unidentified lipid. The major respiratory quinone was ubiquinone Q-10. The genomic DNA G+C content of strain ZL136T was 67.0 mol%. On the basis of phenotypic, chemotaxonomic and phylogenetic analysis, strain ZL136T was classified as a representative of a novel species in the genus of Roseivivax, for which the name Roseivivax marinus sp. nov. is proposed. The type strain is ZL136T ( = JCM 19386T = KCTC 32470T).
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