Abstract:
:A novel bacterium was isolated from a freshwater hot spring, the Hale House Spring, located at Hot Springs National Park, Hot Springs, AR, USA. Cells of strain MP-01(T) stained Gram-negative, were rod-shaped, non-motile, strictly anaerobic and chemo-organotrophic and did not form spores. Growth occurred at 50-65 °C, with an optimum at 60 °C, at pH 6.0-8.0, with an optimum at pH 6.5-7.0, and at NaCl concentrations up to 0.5 % (w/v), with optimum growth in the absence of NaCl. Strain MP-01(T) was capable of fermentative growth on pyruvate or proteinaceous substrates as well as reducing Fe(III) and Mn(IV). Major fatty acids were iso-C15 : 0, iso-C16 : 0, anteiso-C17 : 0 and iso-C17 : 0. The polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine and the major isoprenoid quinone was MK-10. In the polyamine pattern, sym-homospermidine was the predominant compound. The DNA G+C content was 62.7 mol%. Analysis of the 16S rRNA gene sequence of the isolate indicated that strain MP-01(T) represents the first reported cultivated member of subdivision 23 of the Acidobacteria. It is proposed that strain MP-01(T) represents a novel genus and species, for which the name Thermoanaerobaculum aquaticum gen. nov., sp. nov. is proposed. The type strain of Thermoanaerobaculum aquaticum is MP-01(T) ( = DSM 24856(T) = JCM 18256(T)).
journal_name
Int J Syst Evol Microbiolauthors
Losey NA,Stevenson BS,Busse HJ,Damsté JSS,Rijpstra WIC,Rudd S,Lawson PAdoi
10.1099/ijs.0.051425-0subject
Has Abstractpub_date
2013-11-01 00:00:00pages
4149-4157issue
Pt 11eissn
1466-5026issn
1466-5034journal_volume
63pub_type
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