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|標題:||Aquabacterium limnoticum sp nov., isolated from a freshwater spring||作者:||Chen, W.M.
|關鍵字:||gen. nov.;deoxyribonucleic-acid;sequence alignment;roseateles;trees||Project:||International Journal of Systematic and Evolutionary Microbiology||期刊/報告no：:||International Journal of Systematic and Evolutionary Microbiology, Volume 62, Page(s) 698-704.||摘要:||
A Gram-negative, facultatively anaerobic, short-rod-shaped, non-motile and non-spore-forming bacterial strain, designated ABP-4(T), was isolated from a freshwater spring in Taiwan and was characterized using the polyphasic taxonomy approach. Growth occurred at 20-40 degrees C (optimum, 30-37 degrees C), at pH 7.0-10.0 (optimum, pH 7.0-9.0) and with 0-3 % NaCl (optimum, 0 %). Phylogenetic analyses based on 16S rRNA gene sequences showed that strain ABP-4(T), together with Aquabacterium fontiphilum CS-6(T) (96.4 % sequence similarity), Aquabacterium commune B8(T) (96.1 %), Aquabacterium citratiphilum B4(T) (95.5 %) and Aquabacterium parvum B6(T) (94.7 %), formed a deep line within the order Burkholderiales. Strain ABP-4(T) contained summed feature 3 (comprising C-16:1 omega 7c and/or C-16:1 omega 6c), C-18:1 omega 7c and C-16:0 as predominant fatty acids. The major cellular hydroxy fatty acid was C-10:0 3-OH. The major isoprenoid quinone was Q-8 and the DNA G+C content was 68.6 mol%. The polar lipid profile consisted of a mixture of phosphatidylethanolamine, phosphatidylglycerol, phosphatidylserine, diphosphatidylglycerol and several uncharacterized phospholipids. The DNA-DNA relatedness of strain ABP-4(T) with respect to recognized species of the genus Aquabacterium was less than 70 %. On the basis of the genotypic, chemotaxonomic and phenotypic data, strain ABP-4(T) represents a novel species in the genus Aquabacterium, for which the name Aquabacterium limnoticum sp. nov. is proposed. The type strain is ABP-4(T) (=BCRC 80167(T)=KCTC 23306(T)).
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