Arenimonas daechungensis sp nov., isolated from the sediment of a eutrophic reservoir

作者：Huy Hangsak; Jin Long; Lee Young Ki; Lee Keun Chul; Lee Jung Sook; Yoon Jung Hoon; Ahn Chi Yong^*; Oh Hee Mock

来源：International Journal of Systematic and Evolutionary Microbiology, 2013, 63(Pt_2): 484-489.

DOI：10.1099/ijs.0.035410-0

A Gram-negative, non-motile, non-spore-forming and rod-shaped bacterial strain, CH15-1(T), was isolated from a sediment sample taken from Daechung Reservoir, South Korea, during the lateblooming period of cyanobacteria. Strain CH15-1(T) grew optimally at pH 7.0 and 30 degrees C. A phylogenetic analysis based on 16S rRNA gene sequences confirmed that strain CH15-1(T) belongs to the genus Arenimonas with the similarity range from 92.6-97.4% and is closely related to Arenimonas oryziterrae YC6267(T) (97.4%), Arenimonas composti TR7-09(T) (95.4 %), Arenimonas metalli CF5-1(T) (94.7%), Arenimonas malthae CC-JY-1(T) (94.6%) and Arenimonas donghaensis H03-R19(T) (92.6%). However, the DNA DNA hybridization between strain CH15-1(T) and the closest strain, Arenimonas oryziterrae YC6267(T), was 8.9-12.9%. The DNA G+C content was 63.9 mol% compared to A. oryziterrae YC626(T), 65.8 mol%. Strain CH15-1 T included Q-8 as the major ubiquinone and phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and phosphatidylmonomethylethanolamine as the major polar lipids. The major fatty acids (%26gt;5%) were iso-C-15:0, iso-C-16:0, iso-C-14:0, iSo-C-11:0 3-OH, iso-C-17:0 and summed feature 9 (iso-C-17:1 omega 9c and/or C-16:0 10-methyl). On the basis of phylogenetic, phenotypic and genetic data, strain CH15-1(T) was classified in the genus Arenimonas as a member of a novel species, for which the name Arenimonas daechungensis sp. nov. is proposed. The type strain is CH15-1(T) (=KCTC 23553(T)=DSM 24763(T)).

• 出版日期2013-2