Abstract
A Gram-positive, endospore-forming, catalase- and oxidase-positive, motile, rod-shaped, aerobic bacterium, designated strain JSM 079157T, was isolated from surface seawater off the coastline of Naozhou Island in South China Sea. The organism was able to grow with 1–15% (w/v) total salts (optimum, 4–7%), and at pH 6.0–10.0 (optimum, pH 7.5) and 10–45°C (optimum, 30°C). meso-Diaminopimelic acid was present in the cell-wall peptidoglycan. The predominant menaquinone was MK-7, and the polar lipids were diphosphatidylglycerol and phosphatidylglycerol. The major cellular fatty acids were anteiso-C15:0 (45.1%) and anteiso-C17:0 (16.2%), and the DNA G + C content was 39.5 mol%. A phylogenetic analysis based on 16S rRNA gene sequence comparisons revealed that strain JSM 079157T should be assigned to the genus Virgibacillus, being related most closely to the type strains of Virgibacillus litoralis (97.4% sequence similarity), Virgibacillus necropolis (97.3%) and Virgibacillus carmonensis (97.1%). These four strains formed a distinct subcluster in the phylogenetic tree. The levels of DNA–DNA relatedness between the new isolate and the type strains of V. litoralis, V. necropolis and V. carmonensis were 30.4, 19.3 and 12.6%, respectively. The results of the phylogenetic analysis, combined with DNA–DNA relatedness data, phenotypic characteristics and chemotaxonomic information, support the suggestion that strain JSM 079157T represents a new species of the genus Virgibacillus, for which the name Virgibacillus zhanjiangensis sp. nov. is proposed. The type strain is JSM 079157T (=DSM 21084T = KCTC 13227T).
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Acknowledgments
This work was supported by grants from the Construct Program of the Key Discipline in Hunan Province (JSS2009Z01, JSS200903), International Cooperation Research Program of Yunnan Province (2009AC017) and Jishou University (jsdxkyzz200811). We are grateful to Mr Huai-Dong Xiao and Mr Ke Huang for their excellent technical assistance.
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The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain JSM 079157T is FJ425904.
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Peng, QZ., Chen, J., Zhang, YQ. et al. Virgibacillus zhanjiangensis sp. nov., a marine bacterium isolated from sea water. Antonie van Leeuwenhoek 96, 645–652 (2009). https://doi.org/10.1007/s10482-009-9381-0
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DOI: https://doi.org/10.1007/s10482-009-9381-0