Journal of Microbiology

Research Support, Non-U.S. Gov'ts

New Taxa in Alphaproteobacteria: Brevundimonas olei sp. nov., an Esterase-Producing Bacterium: Myungjin Lee , Sathiyaraj Srinivasan , Myung Kyum Kim; J. Microbiol. 2010;48(5):616-622. Published online November 3, 2010; DOI: https://doi.org/10.1007/s12275-010-9367-7

Abstract: A polyphasic taxonomic approach was used to characterize a Gram-negative, non-motile bacterium, designated MJ15T, that was isolated from soil of a GS-Caltex Oil reservoir in Korea. As shown by comparative 16S rRNA gene sequence analysis, strain MJ15T belongs to genus Brevundimonas. The 16S rRNA gene sequence similarities ranged from 95.6-99.2% between strain MJ15T and validated representatives of the genus Brevundimonas. With respect to Brevundimonas species, strain MJ15T exhibited DNA-DNA relatedness values below 40.7%. The G+C content of the genomic DNA was 61.7 mol%. Strain MJ15T contained ubiquinone Q-10. The major fatty acids were C16:0 (27.7%), C19:0 cyclo ω8c (23.2%), summed feature 8 (containing C18:1 ω7c/C18:1 ω6c) (28.5%), and major hydroxyl fatty acid was C12:0 3OH (3.7%). Based upon its phenotypic and genotypic properties, as well as its phylogenetic distinctiveness, strain MJ15T (KCTC 22461T; JCM 16237T) should be classified in the genus Brevundimonas as the type strain of a novel species. The name Brevundimonas olei sp. nov. is proposed for this new species.

Methylobacterium dankookense sp. nov., Isolated from Drinking Water: Si-Won Lee , Hyun-Woo Oh , Kang-Hyun Lee , Tae-Young Ahn; J. Microbiol. 2009;47(6):716-720. Published online February 4, 2010; DOI: https://doi.org/10.1007/s12275-009-0126-6

Abstract: A pink-pigmented bacterium, designated SW08-7T was isolated from the drinking water of a water purifier. Cells were Gram-negative, rod-shaped, strictly aerobic, and non-spore-forming. It grew optimally at 25°C, pH 6~7. Phylogenetic analysis based on 16S rRNA gene sequence showed that strain SW08-7T belongs to the genus Methylobacterium. The highest 16S rRNA gene sequence similarities were found to Methylobacterium mesophilicum JCM 2829T (96.9%), Methylobacterium brachiatum B0021T (96.9%), Methylobacterium phyllosphaerae CBMB27T (96.6%), Methylobacterium radiotolerans JCM 2831T (96.6%), and Methylobacterium hispanicum GP34T (96.5%). DNA-DNA hybridization experiment revealed low-level (28.5%) of DNA- DNA relatedness between strain SW08-7T and Methylobacterium hispanicum. The genomic DNA G+C content was 68.9 mol% and the major isoprenoid quinone was Q-10. The major cellular fatty acid of strain SW08-7T was C18:1 ω7c (79.8±2.1%). Results of phylogenetic, phenotypic, and biochemical analyses revealed that strain SW08-7T could be classified as representing a novel species of genus Methylobacterium, for which the name Methylobacterium dankookense sp. nov. is proposed. The type strain is SW08-7T (=KCTC 22512T =DSM 22415T).

Search