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Alteromonas hispanica sp. nov., a polyunsaturated-fatty-acid-producing, halophilic bacterium isolated from Fuente de Piedra, southern Spain

Microbial Exopolysaccharide Research Group, Department of Microbiology, Faculty of Pharmacy, Cartuja Campus, University of Granada, 18071 Granada, Spain

Correspondence
Emilia Quesada
equesada{at}ugr.es

Strain F-32^T, which produces exopolysaccharides and contains polyunsaturated fatty acids, was isolated from a hypersaline water sample collected from Fuente de Piedra (southern Spain). Phylogenetic analyses indicated conclusively that the strain in question belonged to the genus Alteromonas. Phenotypic tests showed that it could be assigned to the genus Alteromonas although it had a number of distinctive characteristics: it is moderately halophilic, growing best with 7·5–10 % w/v NaCl; it grows at 4 °C and produces H₂S; it does not grow with D-cellobiose, D-fructose, D-galactose, D-glucose or lactose as sole sources of carbon and energy; and its fatty-acid profile is typical of Alteromonas but it also contains a large amount of an unusual acid with three double bonds [18 : 36c (6, 9, 12); 5·01 %, w/v]. The major isoprenoid quinone is Q₈. The DNA G+C content is 46·3 mol%. The phylogenetic, phenotypic and genetic properties of strain F-32^T place it within a novel species, for which the name Alteromonas hispanica sp. nov. is proposed. The type strain is F-32^T (=CECT 7067^T=LMG 22958^T).

Published online ahead of print on 15 July 2005 as DOI 10.1099/ijs.0.63809-0.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of Alteromonas hispanica F-32^T is AY926460.

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