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- Title
Pseudomonas extremaustralis sp. nov., a Poly(3-hydroxybutyrate) Producer Isolated from an Antarctic Environment.
- Authors
López, Nancy I.; Pettinari, M. Julia; Stackebrandt, Erko; Tribelli, Paula M.; Põtter, Markus; Steinbüchel, Alexander; Méndez, Beatriz S.
- Abstract
A Gram-negative, mobile, rod-shaped, non-spore-forming bacterium (strain 14-3T) was isolated from a temporary pond in Antarctica. On the basis of 16S rRNA gene sequence similarity, strain 14-3T was shown to belong to the genus Pseudomonas sensu stricto. Physiological and biochemical tests supported the phylogenetic affiliation. Strain 14-3T is closely related to Pseudomonas veronii DSM 11331T, sharing 99.7% sequence similarity. DNA–DNA hybridization experiments between the two strains showed only moderate reassociation similarity (35.1%). Tests for arginine dihydrolase and nitrate reduction were positive, while those for denitrification, indol production, glucose acidification, urease, ß-galactosidase, esculin, caseine and gelatin hydrolysis were negative. Growth of this bacterium occurred in a range from 4 to 37°C but not at 42°C. It accumulated poly(3-hydroxybutyrate) when grown on sodium octanoate medium. Strain 14-3T therefore represents the type strain of a new species, for which the name Pseudomonas extremaustralis sp. nov. is proposed. The type strain 14-3T has been deposited as DSM 17835T and as CIP 109839T.
- Subjects
ANTARCTICA; POLY-beta-hydroxybutyrate; NUCLEIC acids; DENITRIFYING bacteria; NUCLEIC acid hybridization
- Publication
Current Microbiology, 2009, Vol 59, Issue 5, p514
- ISSN
0343-8651
- Publication type
Article
- DOI
10.1007/s00284-009-9469-9