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Alteromonas australica sp. nov., isolated from the Tasman Sea |
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| Authors: | Elena P Ivanova Hooi Jun Ng Hayden K Webb Valeriya V Kurilenko Natalia V Zhukova Valery V Mikhailov Olga N Ponamoreva Russell J Crawford |
| Institution: | 1. Swinburne University of Technology, PO Box 218, Hawthorn, VIC, 3122, Australia 2. G.B. Elyakov Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Sciences, Pr. 100 Let Vladivostoku, 159, 690022, Vladivostok, Russian Federation 3. A.V. Zhirmunsky Institute of Marine Biology of the Far-Eastern Branch of the Russian Academy of Sciences, Pal’chevskogo Str., 17, 690041, Vladivostok, Russian Federation 4. Tula State University, Lenina Ave., 92, 300600, Tula, Russian Federation |
| Abstract: | A non-pigmented, motile, Gram-negative bacterium designated H 17T was isolated from a seawater sample collected in Port Phillip Bay (the Tasman Sea, Pacific Ocean). The new organism displayed optimal growth between 4 and 37 °C, was found to be neutrophilic and slightly halophilic, tolerating salt water environments up to 10 % NaCl. Strain H 17T was found to be able to degrade starch and Tween 80 but unable to degrade gelatin or agar. Phosphatidylglycerol (27.7 %) and phosphatidylethanolamine (72.3 %) were found to be the only associated phospholipids. The major fatty acids identified are typical for the genus Alteromonas and include C16:0, C16:1ω7, C17:1ω8 and C18:1ω7. The G+C content of the DNA was found to be 43.4 mol%. A phylogenetic study, based on the 16S rRNA gene sequence analysis and Multilocus Phylogenetic Analysis, clearly indicated that strain H 17T belongs to the genus Alteromonas. The DNA?DNA relatedness between strain H 17T and the validly named Alteromonas species was between 30.7 and 46.4 mol%. Based on these results, a new species, Alteromonas australica, is proposed. The type strain is H 17T (= KMM 6016T = CIP 109921T). |
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