Spirosoma terrae sp. nov., Isolated from Soil from Jeju Island, Korea

Leonid N. Ten, Joseph Okiria, Jae Jin Lee, Seung Yeol Lee, Sangkyu Park, Dae Sung Lee, In Kyu Kang, Myung Kyum Kim, Hee Young Jung

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The taxonomic position of bacterial strain, designated 15J9-4T, recovered from a beach soil sample on Jeju Island, South Korea, was established using a polyphasic approach. Strain 15J9-4T was assigned to phylum Bacteroidetes within the family Cytophagaceae based on 16S rRNA gene similarities. The closest phylogenetic relatives with validly published names were Spirosoma panaciterrae Gsoil 1519T (94.2% similarity) and Spirosoma luteolum 16F6ET (94.1%). Cells were rod-shaped, Gram-stain-negative, and non-motile. The isolate grew on NA, R2A, TSA, and LB agar. The temperature limits for growth were 10 and 30 °C with an optimum at 25 °C and the pH range was 7–8. Menaquinone MK-7 was the predominant respiratory quinone. The major cellular fatty acids comprised summed feature 3 (C16:1ω6c/C16:1ω7c, 30.2%), C16:1ω5c (22.2%), iso C15:0 (12.9%), and C16:0 (8.8%). Phosphatidylethanolamine was identified as the major polar lipid. The G+C content of the genomic DNA was 48.4 mol%. The results obtained from the polyphasic analyses allowed for the genotypic and phenotypic differentiation of strain 15J9-4T from recognized Spirosoma species. Therefore, the isolate is considered to represent a novel species in the genus Spirosoma, for which the name Spirosoma terrae sp. nov. is proposed. The type strain is 15J9-4T (= KCTC 52035T = JCM 31994T).

Original languageEnglish
Pages (from-to)492-498
Number of pages7
JournalCurrent Microbiology
Volume75
Issue number4
DOIs
StatePublished - 1 Apr 2018

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