Pseudomonas insulae sp. nov., isolated from island soil

Author:

Lee Dong Hyeon1,Kim Chung Mi1,Kim Seung Bum1ORCID

Affiliation:

1. Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, 99, Daehak-ro, Yuseong, Daejeon 34134, Republic of Korea

Abstract

A novel Gram-stain-negative, rod-shaped, aerobic and motile bacterium designated strain UL073T was isolated from a forest soil of an island, and subjected to taxonomic characterization. Strain UL073T grew at 10–37 °C (optimum, 30 °C), at pH 5.0–10.0 (optimum, pH 7.0) and in the presence of 0–3 % NaCl (optimum, 0 %), respectively. Strain UL073T showed the highest sequence similarity to Pseudomonas lalkuanensis PE08T based on 16S rRNA gene analysis with a sequence similarity of 98.08 %, which was well below the suggested cutoff for species distinction. The 16S rRNA gene tree as well as the multilocus sequence analysis and genome-based trees indicated the independent taxonomic position of strain UL073T, and the orthologous average nucleotide identity and in silico DNA–DNA hybridization values between strain UL073T and related species were no higher than 84.7 and 28.3% respectively, thus confirming the distinctive taxonomic position of the strain. The chemotaxonomic properties were consistent with those of the genus, as the major fatty acids of the strain were a summed feature consisting of C18 : 1 ω7c/C18 : 1 ω6c (31.4 %), another summed feature consisting of C16 : 1 ω7c/C16 : 1 ω6c (23.1 %), and C16 : 0 (22.0 %), the major respiratory quinone was ubiquinone 9, and the major polar lipids were phosphatidylethanolamine and diphosphatidylglycerol. The genome size and DNA G+C content of strain UL073T were 4.87 Mbp and 65.9 mol%. On the basis of phenotypic and phylogenetic evidence, strain UL073T should be classified as representing a novel species of Pseudomonas , for which the name Pseudomonas insulae sp. nov. (type strain=UL073T=KCTC 82407T=JCM 34511T) is proposed.

Funder

National Institute of Biological Resources

Publisher

Microbiology Society

Subject

General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology

Reference30 articles.

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