NDLI: Characterization of Halanaerobaculum tunisiense gen. nov., sp. nov., a new halophilic fermentative, strictly anaerobic bacterium isolated from a hypersaline lake in Tunisia

Content Provider	Springer Nature Link
Author	Hedi, Abdeljabbar Fardeau, Marie Laure Sadfi, Najla Boudabous, Abdellatif Ollivier, Bernard Cayol, Jean Luc
Copyright Year	2008
Abstract	A new halophilic anaerobe was isolated from the hypersaline surface sediments of El-Djerid Chott, Tunisia. The isolate, designated as strain 6SANG, grew at NaCl concentrations ranging from 14 to 30%, with an optimum at 20–22%. Strain 6SANG was a non-spore-forming, non-motile, rod-shaped bacterium, appearing singly, in pairs, or occasionally as long chains (0.7–1 × 4–13 μm) and showed a Gram-negative-like cell wall pattern. It grew optimally at pH values between 7.2 and 7.4, but had a very broad pH range for growth (5.9–8.4). Optimum temperature for growth was 42°C (range 30–50°C). Strain 6SANG required yeast extract for growth on sugars. Glucose, sucrose, galactose, mannose, maltose, cellobiose, pyruvate, and starch were fermented. The end products from glucose fermentation were acetate, butyrate, lactate, H2, and CO2. The G + C ratio of the DNA was 34.3 mol%. Strain 6SANG exhibited 16S rRNA gene sequence similarity values of 91–92% with members of the genus Halobacteroides, H. halobius being its closest phylogenetic relative. Based on phenotypic and phylogenetic characteristics, we propose that this bacterium be classified as a novel species of a novel genus, Halanaerobaculum tunisiense gen. nov., sp. nov. The type strain is 6SANGT (=DSM 19997T = JCM 15060T).
Starting Page	313
Ending Page	319
Page Count	7
File Format	PDF
ISSN	14310651
Journal	Extremophiles
Volume Number	13
Issue Number	2
e-ISSN	14334909
Language	English
Publisher	Springer Japan
Publisher Date	2008-12-25
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Halanaerobaculum tunisiense Halanaerobiales Anaerobic Extreme halophilic Ecology Biotechnology Microbiology
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Medicine Microbiology

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