Abstract
The novel isolate belonging to the genus Terrimonas, designated CR94T, was isolated from rhizosphere soil of a ginseng field in Geumsan, Korea. Cells of strain CR94T were strictly aerobic, Gram-stain-negative, non-motile, non-filamentous single rods. Growth was observed at 10-37 °C (optimum 28 °C) and at pH 4.0-10.0 (optimum pH 6.0). Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain CR94T belonged to the genus Terrimonas, showing highest sequence similarity to Terrimonas lutea DYT (97.3 %), Terrimonas pekingensis QHT (97.1 %), Terrimonas aquatica RIB1-6T (95.6 %), Terrimonas rubra M-8T (94.7 %) and Terrimonas ferruginea ATCC 13524T (93.8 %). DNA-DNA relatedness values between strain CR94T and T. lutea KACC 13047T, T. pekingensis KACC 18795T, T. ferruginea KACC 11310T and T. aquatica LMG 24825T were 30.5, 28.9, 17.8 and 13.5 %, respectively. The DNA G+C content was 46.5 mol% and the major respiratory quinone was menaquinone-7 (MK-7). The major cellular fatty acids of strain CR94T were iso-C15:1 G and iso-C15 : 0. On the basis of the polyphasic analysis, strain CR94T represents a novel species of the genus Terrimonas, for which the name Terrimonas rhizosphaerae sp. nov. is proposed. The type strain is CR94T (=KACC 17564T=NCAIM B 025317T).
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