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Pseudomonas taiwanensis sp. nov., a novel species isolated from soil in Taiwan

¹ Bioresource Collection and Research Center, Food Industry Research and Development Institute;
² Graduate Institute of Life Sciences, Tamkang University

³ E-mail: fll{at}firdi.org.tw

A novel Gram-negative, rod-shaped, motile and non-spore-forming bacterial strain, CMST, isolated from soil was characterized using phenotypic and molecular taxonomic methods. 16S rRNA gene sequence analysis revealed that the organism phylogenetically belongs to the genus Pseudomonas. Pseudomonas monteilii, Pseudomonas plecoglossicida and Pseudomonas mosselii were the most closely related species, with 16S rRNA gene sequence similarities of 99.79, 99.73 and 99.59%, respectively. Low gyrB gene sequence similarities (<90%) and low DNA-DNA reassociation values (<51%) were obtained between the strain and its phylogenetically closest neighbors. The G+C content was 62.7 mol%. The major cellular fatty acids were C18:17c, C16:17c and/or C15:0 iso 2-OH, C16:0 and C10:0 3-OH. Based on the phenotypic and genetic evidence, the strain is suggested to represent a novel species, for which the name Pseudomonas taiwanensis is proposed. The type strain is CMST (=BCRC 17751T =DSM 21245T)