Abstract
A Gram-negative, non-motile, rod-shaped, aerobic bacterial strain, designated S2-3-6T, was isolated from soil in Jeollabuk-do province, South Korea, and was characterized taxonomically using a polyphasic approach. According to a comparative 16S rRNA gene sequence analysis, strain S2-3-6T belonged to the family Cytophagaceae and was most closely related to Spirosoma endophyticum EX36T (98.2%), Spirosoma fluviale MSd3T (96.0%), and Spirosoma linguale DSM 74T (95.7%). Strain S2-3-6T contained summed feature 3 (C16:1 ω7c/C16:1 ω6c), C16:1 ω5c, and C16:0 N alcohol as major cellular fatty acids, MK-7 as the predominant respiratory quinone, and phosphatidylethanolamine as the main polar lipid. The DNA G+C content of strain S2-3-6T was 47.8%. Phenotypic and chemotaxonomic data supported the affiliation of strain S2-3-6T to the genus Spirosoma. However, the DNA–DNA relatedness between strain S2-3-6T and Spirosoma endophyticum KACC 17920T was 27%, clearly showing that the isolate constitutes a new genospecies. Strain S2-3-6T could be clearly differentiated from its closest neighbors based on its phenotypic, genotypic, and chemotaxonomic features. Therefore, strain S2-3-6T represents a novel species of the genus Spirosoma, for which the name Spirosoma jeollabukense sp. nov. is proposed. The type strain is S2-3-6T (= KCTC 52725T = JCM 32129T).
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Acknowledgements
This work was supported by a Cooperative Research Program for Agriculture Science and Technology Development Rural Development Administration, Republic of Korea and the Brain Pool Program of 2016 through the Korean Federation of Science and Technology Societies (KOFST) funded by the Ministry of Science, ICT and Future Planning, Republic of Korea.
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Communicated by Erko Stackebrandt.
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Li, W., Ten, L.N., Lee, SY. et al. Spirosoma jeollabukense sp. nov., isolated from soil. Arch Microbiol 200, 431–438 (2018). https://doi.org/10.1007/s00203-017-1453-3
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DOI: https://doi.org/10.1007/s00203-017-1453-3