Abstract
A Gram-stain negative, aerobic, motile, non-spore-forming and rod-shaped bacterial strain, designated YIM 730227T, was isolated from a soil sample, collected from Karak district, Khyber-Pakhtun-Khwa, Pakistan. The bacterium was characterized using a polyphasic taxonomic approach. Pairwise comparison of the 16S rRNA gene sequences showed that strain YIM 730227T is closely related to Phenylobacterium lituiforme FaiI3T (97.5% sequence similarity), Phenylobacterium muchangponense A8T (97.4%), Phenylobacterium panacis DCY109T (97.1%), Phenylobacterium immobile ET (97.1%) and Phenylobacterium composti 4T-6T (97.0%), while also sharing 98.0% sequence similarity with Phenylobacterium hankyongense HKS-05T after NCBI blast, showing it represents a member of the family Caulobacteraceae. The major respiratory quinone was Q-10 and the major fatty acids were C16:0, summed feature 8 (comprising C18:1ω7c and/or C18:1ω6c), C18:1ω7c 11-methyl and C17:0. The polar lipids were phosphatidylglycerol, unidentified glycolipids, phospholipid and unidentified lipid. The G + C content of the genomic DNA was 68.2 mol%. The DNA–DNA relatedness values of strain YIM 730227T with P. hankyongense HKS-05T, P. lituiforme FaiI3T, P. muchangponense A8T, P. panacis DCY109T, P. immobile ET and P. composti 4T-6T were 31.3 ± 0.6, 26.1 ± 0.2, 24.3 ± 0.1, 21.8 ± 0.9, 19.8 ± 0.6 and 18.2 ± 1.1%, respectively, values lower than 70%. Besides the morphological and chemotaxonomic characteristics, phylogenetic analyses of 16S rRNA gene sequences and the biochemical characteristics indicated that the strain YIM 730227T represents a novel member of the genus Phenylobacterium, for which the name Phenylobacterium terrae sp. nov. (type strain YIM 730227T = KCTC62324T = CGMCC 1.16326T) is proposed.
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Acknowledgements
We are grateful to Dr Rüdiger Pukall (DSMZ, Germany) and Professor Jung-Sook Lee (KCTC, Korea) for kindly providing the reference type strains. This work was supported by Science and Technology Infrastructure work project of Ministry of Science & Technology (No. 2015FY110100) and National Natural Science Foundation of China (No. 31470139). W-J Li was also supported by Guangdong Province Higher Vocational Colleges & Schools Pearl River Scholar Funded Scheme (2014).
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Khan, I.U., Habib, N., Xiao, M. et al. Phenylobacterium terrae sp. nov., isolated from a soil sample of Khyber-Pakhtun-Khwa, Pakistan. Antonie van Leeuwenhoek 111, 1767–1775 (2018). https://doi.org/10.1007/s10482-018-1064-2
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DOI: https://doi.org/10.1007/s10482-018-1064-2