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Int J Syst Evol Microbiol 59 (2009), 2571-2574; DOI  10.1099/ijs.0.010892-0
© 2009 International Union of Microbiological Societies

Salisaeta longa gen. nov., sp. nov., a red, halophilic member of the Bacteroidetes

Natalie Vaisman and Aharon Oren

Department of Plant and Environmental Sciences, The Institute of Life Sciences, and The Moshe Shilo Minerva Center for Marine Biogeochemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

Correspondence
Aharon Oren
orena{at}cc.huji.ac.il

A rod-shaped, 15–30 µm long, red bacterium, affiliated phylogenetically with the phylum Bacteroidetes, was isolated from an experimental mesocosm at Sedom, Israel, filled with a mixture of water from the Dead Sea and the Red Sea. The organism stains Gram-negative and is obligately aerobic, heterotrophic and oxidase- and catalase-positive. Growth is obtained in the presence of 5–20 % NaCl, with an optimum at 10 % NaCl plus 5 % MgCl2 . 6H2O. Temperature and pH optima are 37–46 °C and pH 6.5–8.5. Nitrate is not reduced. Glucose, sucrose, maltose and glycerol stimulate growth with acid formation; no growth stimulation is obtained in the presence of fructose, ribose, xylose, mannitol or sorbitol. The G+C content of the DNA is 62.9 mol% (HPLC). Main fatty acids are 16 : 0 iso and 16 : 1 cis9, followed by 15 : 0 iso and 15 : 0 anteiso. The isolate is sufficiently different from its closest relatives to be classified within a novel species belonging to a new genus, for which we propose the name Salisaeta longa gen. nov., sp. nov. The type strain of Salisaeta longa is strain S4-4T (=DSM 21114T =CECT 7354T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain S4-4T is EU426570.

One- and two-dimensional chromatograms of the polar lipids of strain S4-4T are available as supplementary material with the online version of this paper.






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