期刊
JOURNAL OF MICROBIOLOGY
卷 56, 期 2, 页码 90-96出版社
MICROBIOLOGICAL SOCIETY KOREA
DOI: 10.1007/s12275-018-7430-y
关键词
Spirosoma; Bacteroidetes; polyphasic taxonomy
类别
A Gram-negative, motile, rod-shaped, aerobic bacterial strain, designated S7-2-11(T), was isolated from apple orchard soil from Gyeongsangnam-do Province, Republic of Korea, and was characterized taxonomically using a polyphasic approach. 16S rRNA gene sequence analysis indicated that strain S7-2-11(T) belongs to the family Cytophagaceae in phylum Bacteroidetes, and is closely related to Spirosoma luteolum 16F6E(T) (94.2% identity), Spirosoma knui 15J8-12(T) (92.7%), and Spirosoma linguale DSM 74(T) (91.0%). The G + C content of the genomic DNA of strain S7-2-11(T) was 49.8 mol%. Strain S7-2-11(T) contained summed feature 3 (C-16:1 omega 7c/C-16:1 omega 6c; 35.1%), C-16:1 omega 5c (22.4%), C-15:0 iso (13.9%), and C-17:0 iso 3-OH (10.6%) as major cellular fatty acids, and MK-7 as the predominant respiratory quinone. The main polar lipids were phosphatidylethanolamine, an unidentified aminophospholipid, and two unidentified polar lipids. Phenotypic and chemotaxonomic data supported the affiliation of strain S7-2-11(T) with the genus Spirosoma. The results of physiological and biochemical tests showed the genotypic and phenotypic differentiation of the isolate from recognized Spirosoma species. On the basis of its phenotypic properties, genotypic distinctiveness, and chemotaxonomic features, strain S7-2-11(T) represents a novel species of the genus Spirosoma, for which the name Spirosoma pomorum sp. nov. is proposed. The type strain is S7-2-11(T) (= KCTC 52726(T) = JCM 32130(T)).
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