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Int J Syst Evol Microbiol. 2018 Sep;68(9):2983-2989. doi: 10.1099/ijsem.0.002934. Epub 2018 Jul 20.

Hymenobacter rufus sp. nov., a bacterium isolated from soil.

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1​School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea.
2​School of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea.
3​School of Food Science and Biotechnology/Food and Bio-Industry Research Institute, Kyungpook National University, Kyungpook National University, Daegu 41566, Republic of Korea.
4​Institute of Plant Medicine, Kyungpook National University, Daegu 41566, Republic of Korea.


A bacterial strain, S1-2-2-6T, was isolated from a soil sample collected in Jeollabuk-do province, Republic of Korea. Cells of this strain were observed to be Gram-stain-negative, short and rod-shaped, and colonies were red to pink in colour. Analysis of 16S rRNA gene sequences identified this strain as representing a member of the genus Hymenobacter in the family Cytophagaceae, with the highest levels of sequence similarity being observed in relation to Hymenobacter terrae DG7AT (98.2 %), Hymenobacter rubidus DG7BT (97.9 %), Hymenobacter soli PB17T (97.7 %), and Hymenobacter daeguensis 16F3Y-2T (97.3 %). Growth of S1-2-2-6T was observed at 4-30 °C, pH 6-8 and in the presence of 0-0.5 % NaCl. The predominant respiratory quinone of this strain was menaquinone-7, the major fatty acids were C15 : 0 iso, C15 : 0 anteiso, and Summed feature 3 (C16 : 1ω7c/C16 : 1ω6c), and the major polar lipid was phosphatidylethanolamine. The genomic DNA G+C content of S1-2-2-6T was 60.7 mol%. DNA-DNA hybridization experiments with H. terrae, H. rubidus, H. soli and H. daeguensisresulted in relatedness values of 35.9 and 38.4 %, 34.2 and 30.4 %, 28.3 and 33.1 %, and 23.5 and 27.9 %, respectively. These DNA-DNA hybridization results, in addition to some differentiating phenotypic properties, clearly indicate that S1-2-2-6T is a representative of a novel species of the genus Hymenobacter, for which the name Hymenobacter rufus sp. nov. is proposed. The type strain is S1-2-2-6T (=KCTC 52736T=JCM 32196T).


Bacteroidetes; Hymenobacter; soil bacteria

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