International Journal of Systematic and Evolutionary Microbiology, Vol 52, 1759-1766, Copyright © 2002 by Society for General Microbiology

Pseudoalteromonas translucida sp. nov. and Pseudoalteromonas paragorgicola sp. nov., and emended description of the genus

E. P. Ivanova, T. Sawabe, A. M. Lysenko, N. M. Gorshkova, K. Hayashi, N. V. Zhukova, D. V. Nicolau, R. Christen and V. V. Mikhailov
Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Pr. 100 Let Vladivostoku 159, Russia

On the basis of phenotypic and genotypic characteristics and analysis of 16S rRNA sequences, two novel species belonging to the genus Pseudoalteromonas are described. A pale-orange-pigmented strain, KMM 3548(T), isolated from a sponge and a non-pigmented strain, KMM 520(T), isolated from sea water are marine, Gram-negative, aerobic, rod-shaped organisms. One of the strains, KMM 520(T), had bipolar flagella. Both strains had the ability to degrade gelatin, DNA and Tween 80 but not chitin or agar. Strain KMM 520(T) decomposed elastin and grew at NaCl concentrations of 1--8%, while strain KMM 3548(T) grew at 1--6% NaCl. The temperature range for both strains was 4--30 degrees C. The DNA G+C contents were 46.3 (KMM 520(T)) and 41.1 mol% (KMM 3548(T)). The level of DNA relatedness between the two strains was 20%. DNA from strain KMM 520(T) showed 8--34% genetic relatedness and that of KMM 3548(T) showed 17--53% relatedness to the DNA of other type strains of the genus Pseudoalteromonas. 16S rRNA analysis indicated a clear affiliation of these novel bacteria with the genus Pseudoalteromonas. The type strains of the novel species are Pseudoalteromonas translucida sp. nov. KMM 520(T) (=LMG 19696(T)=ATCC BAA-315(T)) and Pseudoalteromonas paragorgicola sp. nov. KMM 3548(T) (=LMG 19694(T)=ATCC BAA-322(T)).

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