Arachidicoccus terrestris sp. nov., isolated from greenhouse soil.

Abstract

A Gram-stain-negative, aerobic, non-motile, rod-shaped or occasionally filamentous-shaped bacterial strain, designated 5GH13-10T, was isolated from greenhouse soil sampled in Yeoju-si, Republic of Korea. Colonies were milky-coloured, round and convex, and catalase- and oxidase-positive. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain 5GH13-10T was related to the genus Arachidicoccus and had highest 16S rRNA gene sequence identity with Arachidicoccus rhizosphaerae Vu-144T (98.4 %). The major cellular fatty acids were iso-C15 : 0, iso-C15 : 1 G, iso-C17 : 0 3-OH and summed feature 3 (C16 : 1 ω6c and/or C16 : 1 ω7c). The predominant quinone was menaquinone MK-7, and the polar lipids were composed of phosphatidylethanolamine, one unidentified aminolipid, three unidentified aminophospholipids, one unidentified phospholipid and five unidentified lipids. The genomic DNA G+C content of strain 5GH13-10T was 43.8 mol%. The average nucleotide identity values between strain 5GH13-10T and the closely related species Arachidicoccus ginsenosidivorans Gsoil 809T, Arachidicoccus rhizosphaerae Vu-144T and Archidicoccus soli KIS59-12T were 74.86, 74.74 and 69.52 %, and the digital DNA-DNA hybridization values were 20.0, 19.8 and 18.6 %, respectively. Combined phenotypic, phylogenetic and genomic data demonstrated that strain 5GH13-10T is representative of a novel species of the genus Arachidicoccus, for which we propose the name Arachidicoccus terrestris sp. nov. (type strain 5GH13-10T=KACC 18014T=NBRC 113162T).