1887

Abstract

A taxonomic study was carried out on strain P31, which was isolated from a polycyclic aromatic hydrocarbon (PAH)-degrading consortium enriched with deep-sea water of the Indian Ocean. The isolate was Gram-reaction-negative, rod-shaped, motile by means of a polar flagellum and incapable of reducing nitrate to nitrite. Growth was observed at 0.5–8 % NaCl and at 10–41 °C. Strain P31 was unable to degrade Tween 80 or gelatin. The major respiratory quinone was ubiquinone 11 (Q-11). The dominant fatty acids were C 7 (39.79 %), 11-methyl C 7 (17.84 %), C cyclo 8 (12.05 %) and C (6.09 %). The G+C content of the chromosomal DNA was 62.1 mol%. A phylogenetic tree based on 16S rRNA gene sequence analysis showed that strain P31 and DS-1 formed a distinct lineage in the family ; these two strains showed 95.7 % sequence similarity, while similarities between P31 and other members of the genus were below 93 %. Based on the genotypic and phenotypic data, strain P31 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is P31 (=CCTCC AB 208230 =LMG 24712 =MCCC 1A01132).

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2011-02-01
2024-04-18
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