Pseudomonas panacis sp. nov., isolated from the surface of rusty roots of Korean ginseng

Abstract

A Gram-negative, aerobic bacterium, designated CG20106T, was isolated from the surface tissues of rusty root lesions of Korean ginseng. Phylogenetic analysis of the 16S rRNA gene sequence revealed that this isolate represents a hitherto unknown subline within the genus Pseudomonas. Strain CG20106T was catalase- and oxidase-positive, motile and rod-shaped. The overall phenotypic features of the ginseng isolate were similar to those of Pseudomonas cedrina, Pseudomonas migulae and Pseudomonas azotoformans. However, several physiological and chemotaxonomic properties can be weighted to distinguish the isolate from these organisms. The major fatty acids were C16:1ω7c and/or iso-C15:0 2-OH (summed feature 3, 36.4 ± 0.4%), C16:0 (27.5 ± 0.7%) and C18:1ω7c (19.4 ± 0.2%). The DNA G+C content was 61.4 mol%. On the basis of the polyphasic results revealed in this study, the name Pseudomonas panacis sp. nov. is proposed for strain CG20106T. The type strain is CG20106T (= IMSNU 14100T = CIP 108524T = KCTC 12330T).