Affiliation:
1. Department of Life Science, College of Natural Science, Chung-Ang University, Seoul 06974, Republic of Korea
2. School of Bioengineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
Abstract
A Gram-stain-negative, yellow-pigmented and facultatively aerobic bacterium, designated strain U1T, was isolated from plastic dumped soil sampled in the Republic of Korea. Cell of strain U1T were non-motile rods showing catalase-negative and oxidase-positive activities. Strain U1T was shown to grow at 10–37 °C (optimum, 25–30 °C) and pH 6.0–9.0 (optimum, pH 8.0), and in the presence of 0–0.5 % (w/v) NaCl (optimum, 0 %). Strain U1T contained iso-C15 : 0, C16 : 0, C16 : 1 ω5c and summed feature 3 (comprising C16 : 1
ω6c and/or C16 : 1 ω7c) as the major cellular fatty acids (>5 %) and menaquinone-7 as the sole respiratory quinone. Phosphatidylethanolamine, two unidentified aminolipids and three unidentified lipids were identified as the major polar lipids. The DNA G+C content of strain U1T calculated from the whole-genome sequence was 45.5 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain U1T formed a distinct phylogenetic lineage within the genus
Dyadobacter
. Strain U1T has the highest 16S rRNA sequence similarity to
Dyadobacter bucti
QTA69T (97.9 %). Average nucleotide identity and digital DNA–DNA hybridization values between strain U1T and
D. bucti
QTA69T were 74.6 % and 18.9 %, respectively. Based on phenotypic, chemotaxonomic and molecular features, strain U1T represents a novel species of the genus
Dyadobacter
, for which the name Dyadobacter pollutisoli sp. nov. is proposed. The type strain is U1T (= KACC 22210T=JCM 34491T).
Funder
Chung-Ang University
National Institute of Biological Resources
Subject
General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology