Pedobacter ureilyticus sp. nov., isolated from tomato rhizosphere soil

Hien T T Ngo, MooChang Kook, Tae-Hoo Yi
International Journal of Systematic and Evolutionary Microbiology 2015, 65: 1008-14
A Gram-stain-negative, strictly aerobic, rod-shaped and pinkish-yellow bacterium, which was motile by gliding and designated strain THG-T11(T), was isolated from tomato rhizosphere soil in Gyeonggi province, Republic of Korea. Based on 16S rRNA gene sequence comparisons, strain THG-T11(T) was found to be most closely related to 'Pedobacter zeaxanthinifaciens' TDMA-5 (95.9 % sequence similarity), Pedobacter agri PB92(T) (94.9 %), Pedobacter rhizosphaerae 01-96(T) (94.6 %) and Pedobacter alluvionis NWER-II11(T) (94.5 %). The DNA G+C content was 38.4 mol%. The only isoprenoid quinone detected in strain THG-T11(T) was menaquinone-7 (MK-7). The major component in the polyamine pattern was sym-homospermidine. The major polar lipids were phosphatidylethanolamine, an unidentified phosphoglycolipid, an unidentified glycolipid, an unidentified lipid, unidentified aminophospholipids and unidentified aminolipids. The major ceramide was found to be ceramide phosphorylethanolamine. The major fatty acids were identified as iso-C15 : 0, summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c) and C16 : 0. These data support the affiliation of strain THG-T11(T) to the genus Pedobacter. Based on phenotypic, chemotaxonomic and phylogenetic analysis, it is proposed that strain THG-T11(T) represents a novel species of the genus Pedobacter for which the name Pedobacter ureilyticus sp. nov. is proposed, with THG-T11(T) as the type strain ( = KACC 17660(T) = JCM 19461(T)).

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