title: Pseudomonas xiamenensis sp. nov., a denitrifying bacterium isolated from activated sludge.
abstract: A taxonomic study was carried out on strain C10-2T, a moderately halophilic denitrifier isolated from activated sludge samples collected in China. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain C10-2T belonged to the genus Pseudomonas, with highest sequence similarity of 98.1 and 97.7 % to 'Pseudomonas denitrificans' IAM 12023 and Pseudomonas pertucinogena JCM 11590T, respectively. The gyrB, rpoD and rpoB gene sequence similarity between strain C10-2T and P. pertucinogena JCM 11590T was respectively 84.1, 79.0 and 88.2 %. Phylogenetic trees based on these housekeeping genes showed that strain C10-2T and P. pertucinogena JCM 11590T form a clade at the periphery of the genus Pseudomonas. The DNA-DNA hybridization value between strain C10-2T and P. pertucinogena JCM 11590T was 30-32 %. The G+C content of the chromosomal DNA was 61.2 mol%. The combined genotypic and phenotypic data show that strain C10-2T represents a novel species of the genus Pseudomonas, for which the name Pseudomonas xiamenensis sp. nov. is proposed, with the type strain C10-2T (=CGMCC 1.6446 =JCM 13530T =MCCC 1A00089T).
authors.affiliation: Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen, People's Republic of China.
authors.forename: Qiliang
authors.initials: Q
authors.lastname: Lai
authors.forename: Zongze
authors.initials: Z
authors.lastname: Shao
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics; D015373:Bacterial Typing Techniques; D001482:Base Composition; D002681:China; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D020459:Genes, rRNA; D008969:Molecular Sequence Data; D009566:Nitrates / Q000378:metabolism*; D009693:Nucleic Acid Hybridization; D010641:Phenotype; D010802:Phylogeny; D011549:Pseudomonas / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012722:Sewage / Q000382:microbiology*; D013045:Species Specificity
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D009566:Nitrates; D012336:RNA, Ribosomal, 16S; D012722:Sewage