1887

Abstract

Three pale-red-pigmented, Gram-stain-negative, coccobacilli-shaped, motile and strictly aerobic bacteria, strains MO17, MO41 and NPKOSM1, were isolated from rice paddy soil. Colonies were circular with entire edges, convex and pale red. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strains MO17, MO41 and NPKOSM1 belonged to the genus and were closely related to FW-3 (98.2 %), YC6724 (98.0 %), 5N26 (98.0 %), BUT-5 (97.8 %), YIM 78007 (97.7 %), TH-G33 (97.6 %) and DS-48 (96.8 %). The DNA–DNA hybridization values between strains MO17, MO41 and NPKOSM1 were 84–92 %, and the values between the three strains and their close phylogenetic relatives were also below 70 %. The major cellular fatty acids were C 7, C and summed feature 3 (C 7c and/or iso-C 2OH). The predominant respiratory quinone was identified as Q-10. The polar lipids detected were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, one unidentified aminophospholipid and two unknown phospholipids. Based on their distinctive phenotypic, phylogenetic and chemotaxonomic characteristics, the three strains are considered to represent novel species of the genus for which the name sp. nov. is proposed. The type strain is MO17 (=KACC 19933=NBRC 114495).

Keyword(s): rice paddy soil , Roseomonas and sp. nov.
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2022-02-16
2022-05-18
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