Abstract
A novel bacterial strain MAH-10T was isolated from soil sample of a Chinese cabbage garden, Republic of Korea and was characterized using a polyphasic approach. Cells were Gram-staining negative, rod-shaped, yellowish orange colored, and motile. The strain was aerobic, catalase and oxidase are positive, and optimum growth temperature and pH were 28 °C and 6.5, respectively. Flexirubin-type pigments were found to be present. On the basis of 16S rRNA gene sequence analysis, strain MAH-10T belongs to the genus Flavobacterium and is most closely related to Flavobacterium tyrosinilyticum KCTC 42726T (98.7%). On the basis of phylogenetic tree, other closely related species are Flavobacterium banpakuense KACC 14225T (98.3%) and Flavobacterium chungbukense KACC 15048T (97.6%). In DNA–DNA hybridization tests, the DNA relatedness between strain MAH-10T and its closest phylogenetic neighbor was below 45.0%. The DNA G+C content was 37.2 mol% and the predominant respiratory quinone was menaquinone-6. The major cellular fatty acids were C15:0 iso, C16:0, and summed feature 3 (C16:1ω7c and/or C16:1ω6c). On the basis of DNA–DNA hybridization results and genotypic, chemotaxonomic, and physiological data analysis, it is demonstrated that strain MAH-10T represented a novel species within the genus Flavobacterium, for which the name Flavobacterium chungangensis is proposed. The type strain is MAH-10T (=KACC 19296T=CGMCC 1.16226T). The NCBI GenBank accession number for the 16S rRNA gene sequence of strain MAH-10T is KY964277 and the digital protologue database (DPD) Taxon Number of strain MAH-10T is TA00296.
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Acknowledgements
This study was performed with the support of the Cooperative Research Program of the National Research Foundation of Korea grant (Project No. NRF-2016R1A2B4014591) funded by the Korea government (MISP), Republic of Korea.
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Md. Amdadul Huq and Shahina Akter have equally contributed to this work.
The NCBI GenBank accession number for the 16S rRNA gene sequence of strains MAH-10T is KY964277 (not released). Digital protologue’ database (DPD) Taxon Number: TA00296.
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Supplementary Table 1
. Negative properties of strain MAH-10T carried out by commercial test kits (API 20NE and API ZYM). (PPTX 43 KB)
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Huq, M.A., Akter, S. & Lee, SY. Flavobacterium chungangensis sp. nov., a Bacterium Isolated from Soil of Chinese Cabbage Garden. Curr Microbiol 75, 842–848 (2018). https://doi.org/10.1007/s00284-018-1456-6
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DOI: https://doi.org/10.1007/s00284-018-1456-6