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Taxonomy Citation ID Reference
42671     ( 2013 )

Tepidimonas fonticaldi sp. nov., a slightly thermophilic betaproteobacterium isolated from a hot spring.

International journal of systematic and evolutionary microbiology 63 (Pt 5)
PMID : 22984136 DOI  :   10.1099/ijs.0.043729-0    
Abstract >>
A slightly thermophilic bacterial strain, designated AT-A2(T), was isolated from a hot spring water sample taken from the Antun hot spring in Taiwan and characterized using a polyphasic taxonomic approach. Cells of strain AT-A2(T) were aerobic, Gram-negative, motile by a single polar flagellum and formed non-pigmented colonies. Growth occurred at 35-60 �XC (optimum, 55 �XC), with 0-1.0 % NaCl (optimum, 0.2 %) and at pH 7.0-9.0 (optimum, pH 7.0). Phylogenetic analyses based on 16S rRNA gene sequences showed that strain AT-A2(T) belonged to the genus Tepidimonas and its closest neighbour was Tepidimonas thermarum AA-1(T) with a sequence similarity of 97.5 %. The predominant cellular fatty acids were C16 : 0 (40.2 %), summed feature 3 (C16 : 1�s7c and/or C16 : 1�s6c; 20.1 %) and C17 : 0 cyclo (11.5 %). The major respiratory quinone was Q-8. The polar lipid profile consisted of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, an uncharacterized aminolipid and several uncharacterized phospholipids. The DNA G+C content of strain AT-A2(T) was 70.1 mol%. The mean level of DNA-DNA relatedness between strain AT-A2(T) and Tepidimonas thermarum AA-1(T) was 23.9 %. On the basis of the phylogenetic and phenotypic data, strain AT-A2(T) should be classified as representing a novel species, for which the name Tepidimonas fonticaldi sp. nov. is proposed. The type strain is AT-A2(T) (= LMG 26746(T) = KCTC 23862(T) = BCRC 80391(T)).
KeywordMeSH Terms
Phylogeny
Water Microbiology

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