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  • Title: Marimonas lutisalis sp. nov., isolated from a tidal mudflat and emended description of the genus Marimonas.
    Author: Lee SD, Jeon D, Kim YJ, Kim IS, Choe H, Kim JS.
    Journal: Int J Syst Evol Microbiol; 2020 Jan; 70(1):259-266. PubMed ID: 31639073.
    Abstract:
    A Gram-reaction-negative bacterial strain, designated GH1-19T, was isolated from a tidal mudflat sample collected in Gangwha Island, Republic of Korea. Cells of the novel micro-organism were strictly aerobic, non-sporulating, motile and rod-shaped. Growth occurred at 10-40 °C (optimum, 30 °C), pH 6-9 (pH 8) and in the presence of 1-9 % NaCl (3 %). Comparative analysis of complete or nearly complete 16S rRNA gene sequences exhibited that strain GH1-19T formed a distinct cluster between Marimonas arenosa CAU 1311T (97.42 % sequence similarity) and Aquicoccus porphyridii L1 8-17T (97.35 %). Similarity levels of 16S rRNA gene sequences between the novel strain and other members of the family Rhodobacteraceae were below 96.6 %. The isoprenoid quinone was Q-10. The major fatty acids were C18 : 1ω7c, C16 : 0, summed feature 3 (C16 : 0 ω7c and/or C16 : 0 ω6c) and C12 : 0 3-OH. The polar lipids consisted of diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, an unidentified aminolipid, an unidentified phospholipid and an unidentified lipid. The G+C content of the DNA was 63.2 mol% (draft genome). DNA-DNA relatedness value between the novel strain and the type strain of Marimonas arenosa was 12.7±9.0 %. On the basis of data from phenotypic, chemotaxonomic and DNA-DNA hybridization studies together with phylogenetic analyses, strain GH1-19T (=KCTC 62376T=DSM 106292T) represents a novel species of the genus Marimonas, for which the name Marimonas lutisalis sp. nov. is proposed, with the emended description of the genus Marimonas.
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