Pseudomonas japonica sp. nov., a novel species that assimilates straight chain alkylphenols

[摘要] A bacterial strain, WLT, which was isolated from an activated sludge, was able to degrade alkylphenols. 16S rDNA sequence analysis indicated that strain WLT belonged to the genus Pseudomonas (sensu stricto) and formed a monophyletic clade with the type strain of Pseudomonas graminis and other members in the Pseudomonas putida subcluster with sequence similarity values higher than 97%. Genomic relatedness based on DNA-DNA hybridization of strain WLT to these strains is 2–41%. Strain WLT contained ubiquinone-9 as the main respiratory quinone, and the G+C content of DNA was 66 mol%. The organism contained hexadecanoic acid (16:0), hexadecenoic acid (16:1) and octadecenoic acid (18:1) as major cellular fatty acids. The hydroxy fatty acids detected were 3-hydroxydecanoic acid (3-OH 10:0), 3-hydroxydodecanoic acid (3-OH 12:0) and 2-hydroxydodecanoic acid (2-OH 12:0). These results, as well as physiological and biochemical characteristics clearly indicate that the strain WLT represents a new Pseudomonas species, for which the name Pseudomonas japonica is proposed. The type strain is strain WLT (=IAM 15071T=TISTR 1526T).

[学科分类] 微生物学和免疫学

[关键词] activated sludge;alkylphenols degrading bacteria;endocrine disrupter chemicals;Pseudomonas;Pseudomonas japonica sp. nov.