Journal
ARCHIVES OF MICROBIOLOGY
Volume 201, Issue 3, Pages 349-355Publisher
SPRINGER
DOI: 10.1007/s00203-018-1605-0
Keywords
Pedobacter paludis; Mining soil; Polyphasic taxonomy; 16S rRNA gene; Genome
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Funding
- Guangdong Detection Centre of Microbiology, P. R. China
- National Key Research and Development Program of China [2016YFD0800702]
- National Natural Science Foundation of China [31870086]
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A Gram-stain-negative, aerobic, non-motile, rod-shaped and non-spore-forming bacterium, designated YXT, was isolated from wetland soil. Compared to strain YXT, Pedobacter yonginense HMD1002(T) had the highest 16S rRNA gene sequence identity (97.8%), and the remaining strains had the identities below 97%. Phylogenetic analysis of the 16S rRNA gene sequences showed that strain YXT grouped with P. yonginense HMD1002(T). The values of DNA-DNA hybridization and genomic orthologous average nucleotide identity (orthoANI) between strain YXT and Pedobacter yonginense KCTC 22721(T) were 58.5% and 82.0%, respectively. The genome size of strain YXT was 5.0Mb, comprising 4369 predicted genes with a DNA G+C content of 37.3mol %. Strain YXT had menaquinone-7 as the only respiratory quinone and polar lipids of phosphatidylethanolamine, sphingolipid, aminolipid and three unidentified lipids. The predominant cellular fatty acids (>10%) of strain YXT were summed feature 3 (iso-C-15:0 2-OH and/or C(16:1)7c), iso-C-15:0 and iso-C-17:0 3-OH. Strain YXT could be distinguished from the other Pedobacter members based on the data of phylogenetic distance, DNA-DNA hybridization, genomic orthoANI, RecA MLSA, core-protein comparison, and hydrolyses of l-arginine, utilization of d/l-lactate, L-alanine, 5-ketonic gluconate and glycogen. Therefore, strain YXT represents a novel species of the genus Pedobacter, for which the name Pedobacter paludis sp. nov. is proposed. The type strain is YXT (=KCTC 62520(T)=CCTCC AB 2018029(T)).
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