Abstract:
:Two novel strains of thermophilic planctomycetes were recovered from terrestrial and subterranean habitats. Strain R1(T) was isolated from a hot spring (Kunashir Island, Russia) and strain SBP2(T) was isolated from a deep gold mine (South Africa). Both isolates grew in the temperature range 30-60 °C and pH range 5.0-8.0. Strain R1(T) grew optimally at 60 °C and pH 6.0-6.5; for SBP2(T) optimal conditions were at 52 °C and pH 7.5-8.0. Both strains were capable of anaerobic respiration with nitrate and nitrite as electron acceptors as well as of microaerobic growth. They also could grow by fermentation of mono-, di- and polysaccharides. Based on their phylogenetic position and phenotypic features we suggest that the new isolates represent two novel species belonging to a new genus in the order Planctomycetales, for which the names Thermogutta terrifontis gen. nov., sp. nov. and Thermogutta hypogea sp. nov. are proposed. The type strain of Thermogutta terrifontis, the type species of the genus, is R1(T) ( = DSM 26237(T) = VKM B-2805(T)), and the type strain of Thermogutta hypogea is SBP2(T) ( = JCM 19991(T) = VKM B-2782(T)).
journal_name
Int J Syst Evol Microbiolauthors
Slobodkina GB,Kovaleva OL,Miroshnichenko ML,Slobodkin AI,Kolganova TV,Novikov AA,van Heerden E,Bonch-Osmolovskaya EAdoi
10.1099/ijs.0.000009subject
Has Abstractpub_date
2015-03-01 00:00:00pages
760-765issue
Pt 3eissn
1466-5026issn
1466-5034journal_volume
65pub_type
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