Flavobacterium tistrianum sp. nov., a gliding bacterium isolated from soil

Chatrudee Suwannachart, Kanjana Rueangyotchanthana, Suksan Srichuay, Sophea Pheng, Bundit Fungsin, Chantara Phoonsiri, Song-Gun Kim
International Journal of Systematic and Evolutionary Microbiology 2016, 66 (6): 2241-6
A novel gliding bacterial strain, GB 56.1T, was obtained from soil at the Sakaerat Biosphere Reserve, in Nakhon Ratchasima province, Thailand; the strain was characterized using a polyphasic approach. Cells were Gram-stain-negative, yellow, rod shaped and devoid of flagella, but showed gliding motility. Phylogenetic analysis based on 16S rRNA gene sequences found that GB 56.1T was a member of the genus Flavobacterium and that the strain shared the highest sequence similarities with Flavobacterium nitrogenifigens (98.4 %), Flavobacterium anhuiense(98.3 %) and Flavobacterium ginsenosidimutans (97.9 %). The similarities of the sequences of all other species of the genus Flavobacterium were below 97.4 %. The major respiratory quinone of strain GB 56.1T was MK-6; fatty acids were iso-C15:0, C16:1ω6c/C16:1ω7c, C16:0 and C16:0 3-OH. The major polar lipids were phosphatidylethanolamine, phosphatidylserine, an unidentified amino lipid and four polar lipids. The DNA G+C content of this strain was 34.2 mol%. The DNA-DNA relatedness of GB 56.1T was highest against F.anhuiense, with a value of 37.6 %. On the basis of morphological, physiological and chemotaxonomic characteristics, DNA-DNA hybridization relatedness and 16S rRNA gene sequence analysis, we conclude that strain GB 56.1T represents a novel species, for which the name Flavobacterium tistrianum sp. nov. is proposed. The type strain is GB 56.1T (=TISTR 1612T =KCTC 42679T).

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