Journal of Microbiology

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

NOTE] Pigmentiphaga soli sp. nov., a Bacterium Isolated from Soil: Jae-Jin Lee , Sathiyaraj Srinivasan , Myung Kyum Kim; J. Microbiol. 2011;49(5):857-861. Published online November 9, 2011; DOI: https://doi.org/10.1007/s12275-011-1375-8

Abstract: Strain BS12T, a Gram-negative motile bacterium, was isolated from soil in South Korea and characterized to determine its taxonomic position. Phylogenetic analyses based on the 16S rRNA gene sequence revealed that the strain belonged to the family Alcaligenaceae in the class Betaproteobacteria. The highest degree of sequence similarities of strain BS12T were found with Pigmentiphaga litoralis JSM 061001T (98.3%), Pigmentiphaga daeguensis K110T (98.2%), and Pigmentiphaga kullae K24T (98.1%). Chemotaxonomic data revealed that strain BS12T possessed ubiquinone-8, which is common in the family Alcaligenaceae, and the predominant fatty acids were C16:0, C17:0 cyclo, summed feature 3 (C16:1 ω6c/ω7c), and summed feature 8 (C18:1 ω6c/ω7c). The major polar lipids of strain BS12T were phosphatidylethanolamine and phosphatidylglycerol. Based on these data, BS12T (=KCTC 23577T =JCM 17666T =KEMB 9004-082T) should be classified as a type strain of a novel species, for which the name Pigmentiphaga soli sp. nov. is proposed.

Comamonas granuli sp. nov., Isolated from Granules Used in a Wastewater Treatment Plant: Kyoung-Ho Kim , Leonid N. Ten , Qing-Mei Liu , Wan-Taek Im , Sung-Taik Lee; J. Microbiol. 2008;46(4):390-395. Published online August 31, 2008; DOI: https://doi.org/10.1007/s12275-008-0019-0

Abstract: A Gram-negative, motile, rod-shaped, non-spore-forming bacterial strain, designated as Ko03T, was isolated from microbial granules, and was characterized, using a polyphasic approach, in order to determine its taxonomic position. The isolate was positive for catalase and oxidase, but negative for gelatinase and β-galactosidase. Phylogenetic analyses using the 16S rRNA gene sequence showed that the strain formed a monophyletic branch towards the periphery of the evoluionary radiation occupied by the genus Comamonas, its closest neighbors being Comamonas koreensis KCTC 12005T (95.9% sequence similarity), Comamonas nitrativorans DSM 13191T (95.7%), and Comamonas odontotermitis LMG 23579T (95.7%). Strain Ko03T had a genomic DNA G+C content of 68.4 mol% and the predominant respiratory quinone was Q-8. The major fatty acids were C16:1 ω7c (44.7%), C16:0 (28.1%), C18:1 (16.1%), and C10:0 3-OH (3.5%). These chemotaxonomic results supported the affiliation of strain Ko03T to the genus Comamonas. However, low 16S rRNA gene sequence similarity values and distinguishing phenotypic characteristics allowed genotypic and phenotypic differentiation of strain Ko03T from recognized Comamonas species. On the basis of its phenotypic properties and phylogenetic distinctiveness, strain Ko03T represents a novel species of the genus Comamonas, for which the name Comamonas granuli sp. nov. is proposed. The type strain is Ko03T (= KCTC 12199T= NBRC 101663T).

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