Thalassospira tepidiphila sp. nov., a polycyclic aromatic hydrocarbon-degrading bacterium isolated from seawater.
Int J Syst Evol Microbiol, 2008/3;58(Pt 3):711-5.
Kodama Y[1], Stiknowati LI, Ueki A, Ueki K, Watanabe K
Affiliations
PMID: 18319483DOI: 10.1099/ijs.0.65476-0
Impact factor: 2.689
Abstract
A Gram-negative, mesophilic bacterial strain, designated 1-1B(T), which degrades polycyclic aromatic hydrocarbons, was isolated from petroleum-contaminated seawater during a bioremediation experiment. A 16S rRNA gene sequence analysis indicated that the isolate was affiliated with the genus Thalassospira in the Alphaproteobacteria; the sequence was found to be most similar to those of Thalassospira profundimaris WP0211(T) (99.8 %), Thalassospira xiamenensis M-5(T) (98.2 %) and Thalassospira lucentensis DSM 14000(T) (98.1 %). However, the levels of DNA-DNA relatedness between strain 1-1B(T) and these type strains were 50.7+/-17.2, 35.7+/-17.8 and 32.0+/-21.1 %, respectively. In addition, strain 1-1B(T) was found to be distinct from the other described species of the genus Thalassospira in terms of some taxonomically important traits, including DNA G+C content, optimum growth temperature, salinity tolerance, utilization of carbon sources and fatty acid composition. Furthermore, strain 1-1B(T) and T. profundimaris were also different with regard to motility and denitrification capacities. On the basis of physiological and DNA-DNA hybridization data, strain 1-1B(T) represents a novel species within the genus Thalassospira, for which the name Thalassospira tepidiphila sp. nov. is proposed. The type strain is 1-1B(T) (=JCM 14578(T) =DSM 18888(T)).
MeSH terms
Alphaproteobacteria; Bacterial Typing Techniques; Base Composition; DNA, Bacterial; DNA, Ribosomal; Genes, rRNA; Molecular Sequence Data; Nucleic Acid Hybridization; Petroleum; Phylogeny; Polycyclic Aromatic Hydrocarbons; RNA, Ribosomal, 16S; Seawater; Sequence Analysis, DNA; Species Specificity; Water Pollution
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