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Updated: Dec 17, 2025

Environmental Sampling of Photosynthetic Microbes and Their Viruses: From Field to Lab
Published on: July 3, 2025
Sphingomonas parva sp. nov., isolated from soil in Jeju Island
Soohyun Maeng1, Yuna Park1, Ju Hyun Han1
1Department of Bio and Environmental Technology, College of Natural Science, Seoul Women's University, Seoul, 139-774, South Korea.
Abstract:
A Gram staining-negative, yellow-colored, rod-shaped, non-motile and aerobic, designated strain 17J27-24T was isolated from a soil sample in Korea. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain 17J27-24T was related to the members of the family Sphingomonadaceae and formed a distinct monophyletic cluster within the genus Sphingomonas with Sphingomonas deserti (98.3% 16S rRNA gene sequence similarity). Growth was observed at 30 °C (optimum), at pH 7.0 (optimum), and in the absence of NaCl (%). The predominant cellular fatty acids were summed feature 8 (18:1 ω7c and/or 18:1 ω6c) and C17:1 ω6c. The major respiratory quinone was Q10. The polar lipids profile comprised of diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), and sphingoglycolipid (SGL). The DNA G + C content was 77.8 mol%. The average nucleotide identity (ANI) and digital DNA-DNA hybridisation (dDDH) values between 17J27-24T and its phylogenetically closest Sphingomonas deserti (KCTC 62411T) were below the established cut-off < 94% (ANI) and < 70% (dDDH) for species delineation. Moreover, the results of the polyphasic approach confirmed that strain 17J27-24T represents a novel species of the genus Sphingomonas within the family Sphingomonadaceae, for which the name Sphingomonas parva sp. nov. is proposed. The type strain of this species is 17J27-24T (= KCTC 62208T = JCM 3896T). An emended description of the species Sphingomonas parva is provided.
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