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Int J Syst Evol Microbiol. 2018 Feb;68(2):582-588. doi: 10.1099/ijsem.0.002550. Epub 2018 Jan 4.

Larkinella knui sp. nov., isolated from soil.

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1​College of Agricultural and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea.
2​School of Food Science and Biotechnology/Food and Bio-Industry Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea.
3​Department of Bio and Environmental Technology, Seoul Women's University, Seoul 01797, Republic of Korea.
4​Institute of Plant Medicine, Kyungpook National University, Daegu 41566, Republic of Korea.


A Gram-stain-negative, motile by gliding, rod-shaped, aerobic bacterium, designated 15J6-3T6T, was isolated from a soil sample collected from Jeju Island, South Korea, and characterized taxonomically using a polyphasic approach. Comparative 16S rRNA gene sequence analysis showed that strain 15J6-3T6T belongs to the family Cytophagaceae and is related to Larkinella harenae 15J9-9T (93.9 % similarity), Larkinella arboricola Z0532T (93.6 %), Larkinella bovis M2TB15T (93.3 %), and Larkinella insperata LMG 22510T (93.3 %). The DNA G+C content of strain 15J6-3T6T was 50.6 mol%. The detection of phosphatidylethanolamine and an unidentified polar lipid as major polar lipids, menaquinone-7 as the predominant quinone, and C16 : 1ω5c, iso-C15 : 0, and iso-C17 : 0 3-OH as the major fatty acids also supports the affiliation of the isolate to the genus Larkinella. Based on its phenotypic properties and phylogenetic distinctiveness, we propose that strain 15J6-3T6T should be classified in the genus Larkinella as a representative of a novel species, for which the name Larkinella knui sp. nov. is proposed. The type strain is 15J6-3T6T (=KCTC 42998T=JCM 31989T).


Bacteroidetes; Larkinella; soil bacteria

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