Abstract
A taxonomic study of a Gram-stain negative, rod-shaped, motile, asporogenous, catalase- and oxidase-positive bacterium, sh-6T, forming pink-red colonies, isolated from a contaminated R2A plate in the laboratory was performed. Its optimum growth temperature was determined to be 28 °C in the absence of NaCl on R2A plates. On the basis of 16S rRNA gene sequence analysis, strain sh-6T belongs to the genus Hymenobacter and is closely related to Hymenobacter deserti ZLB-3T (95.05%), Hymenobacter paludis KBP-30T (94.96%), Hymenobacter coalescens WW84T (94.04%), Hymenobacter gummosus ANT-18T (93.38%), Hymenobacter ocellatus Myx2105T (93.70%), Hymenobacter jeollabukensis 1-3-3-8T (93.48%) and Hymenobacter koreensis GYR3077T (93.21%). Comparison of the genome of strain sh-6T and that of H. gummosus ANT-18T gave digital DNA–DNA hybridization and Average Nucleotide Identity values of 20.6% and 78.4%, respectively. The respiratory isoprenoid quinone and polyamine component were identified as MK-7 and sym-homospermidine, respectively. The major cellular fatty acids identified as iso-C15:0, summed feature 4 (iso-C17:1 I/anteiso B), iso-C16:0, iso-C17:0 3-OH and iso-C17:0. The major polar lipid of strain sh-6T determined to be phosphatidylethanolamine. The DNA G+C content was determined to be 60.5 mol%. On the basis of the evidence presented in this study, a novel species of the genus Hymenobacter, Hymenobacter oligotrophus sp. nov., is proposed, with the type strain sh-6T (= CCTCC AB 2016064T = KCTC 62345T).
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Change history
28 January 2020
In the original publication, the deposit number of strain sh-6T was incorrectly published as ���CCTCC AB 2016064��� throughout the article.
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Funding
This work was supported by the National Key R&D Program of China (2018YFC1406701), the R&D Infrastructure and Facility Development Program of the Ministry of Science and Technology of the People’s Republic of China (Grant No. NIMR-2017-8), the National Natural Science Foundation of China (Grant No. 31270538), and the Chinese Polar Scientific Strategy Research Fund IC201706.
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YG performed the laboratory experiments, analysed the data, and drafted the manuscript. YZ contributed to the polyphasic taxonomy. JT contributed to the biochemical characterisation. KQ contributed to the fatty acids determination. JL contributed to strains activation and preservation. YH and ZW contributed to the morphological analyses. FP designed the experiments and supervised the manuscript.
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Geng, Y., Zhang, Y., Tian, J. et al. Hymenobacter oligotrophus sp. nov., isolated from a contaminated agar plate. Antonie van Leeuwenhoek 112, 1533–1544 (2019). https://doi.org/10.1007/s10482-019-01279-3
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DOI: https://doi.org/10.1007/s10482-019-01279-3