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Updated: Jul 4, 2026

An Approach to Constructing Multispecies Biofilm Communities from Rhizosphere Soil
Published on: May 24, 2024
Rhodococcus kunmingensis sp. nov., an actinobacterium isolated from a rhizosphere soil
Yong-Xia Wang1, Hai-Bin Wang, Yu-Qin Zhang
1The Key Laboratory for Microbial Resources of the Ministry of Education, PR China.
Abstract:
A Gram-positive, aerobic, non-motile actinobacterium strain, designated YIM 45607(T), was isolated from a rhizosphere soil sample in Kunming, south-west China. Chemotaxonomically, the isolate contained chemical markers that supported its assignment to the genus Rhodococcus. On the basis of 16S rRNA gene sequence similarity analysis, strain YIM 45607(T) formed a new subline within the genus Rhodococcus, with Rhodococcus equi as its closest phylogenetic neighbour (98.2 % 16S rRNA gene sequence similarity to the type strain). However, DNA-DNA hybridization demonstrated that strain YIM 45607(T) was different from R. equi DSM 20307(T) (35.4 % relatedness). Based on polyphasic analysis, strain YIM 45607(T) could be clearly distinguished from other species of the genus Rhodococcus. The isolate therefore represents a novel species of Rhodococcus, for which the name Rhodococcus kunmingensis sp. nov. is proposed. The type strain is strain YIM 45607(T) (=KCTC 19149(T) =DSM 45001(T)).
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