| Title | Flavobacterium zhairuonensis sp. nov., a gliding bacterium isolated from marine sediment of the East China Sea |
|---|---|
| Author | Sanjit Chandra Debnath1+, Ahmed Mohammed Abdo Miyah1+, Can Chen1, Huan Sheng1, Xue-Wei Xu1,2,3, Yue-Hong Wu2,3, Dao-Qiong Zheng1, Jin-Zhong Xu1, Ya-Nan Di1, Pin-Mei Wang1, and Li Shen1* |
| Address | 1Ocean College, Zhejiang University, Zhoushan, 316021, P. R. China, 2Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou, 310012, P. R. China, 3Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, P. R. China |
| Bibliography | Journal of Microbiology, 57(12),1065-1072, 2019, |
| DOI | 10.1007/s12275-019-9194-4 |
| Key Words | Flavobacterium zhairuonensis, polyphasic analysis, genome sequence, sediment, East China Sea |
| Abstract | A yellow pigmented, Gram-stain-negative, aerobic bacterium designated A5.7T was studied to evaluate the taxonomic position following the modern polyphasic approach. The strain was isolated from sediments near Zhairuo Island, which is situated in the East China Sea. Cells were non-spore forming rods without flagella but showed motility by gliding. Growth was observed at 15–35°C (optimum 28°C), pH 6.0–9.0 (optimum pH 6.5) and 0–2% (w/v) NaCl (optimum 0–0.5%) in LB broth. The major respiratory quinone of A5.7T was menaquinone 6. The major polar lipid of A5.7T was phosphatidylethanolamine and the predominant fatty acids (> 5%) were iso-C15:0, iso-C17:0 3-OH, C15:1 ω6c, iso-C15:0 3-OH, iso-C15:1 G, summed feature 3 (C16:1 ω7c and/or C16:1 ω6c) and summed feature 9 (iso-C17:1 ω9c and/or C16:0 10-methyl). Phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate belongs to the genus Flavobacterium and shares the highest sequence similarities with Flavobacterium sharifuzzamanii A7.6T (98.5%), Flavobacterium tistrianum GB 56.1T (98.3%), Flavobacterium nitrogenifigens NXU-44T (97.8%), Flavobacterium anhuiense D3T (97.6%), Flavobacterium ginsenosidimutans THG 01T (97.6%), and Flavobacterium foetidum CJ42T (97.6%). Digital DNA-DNA hybridization and average nucleotide identity values between the strain and its closest phylogenetic neighbors showed the ranges from 19.6 to 34.1% and 73.7 to 87.9%, respectively. Therefore, based on polyphasic characteristics, strain A5.7T represents a novel species of the genus Flavobacterium for which the name Flavobacterium zhairuonensis sp. nov. is proposed. The type strain is A5.7T (= KCTC 62406T = MCCC 1K03494T). |