Abstract
A Gram-stain-negative, facultatively anaerobic, non-motile and rod-shaped bacterial strain, designated THG-SD5.5T, was isolated from a soil sample collected in a tangerine field, Republic of Korea. According to the 16S rRNA gene sequence comparisons, the isolate was identified as a member of the genus Chitinophaga and to be closely related to Chitinophaga ginsengihumi KACC 17604T (97.9%) and Chitinophaga rupis KACC 14521T (97.5%). The 16S rRNA gene sequence similarities with other species of the genus Chitinophaga were in the range 92.8–95.5%. Catalase test was positive. Oxidase test was negative. The DNA G + C content was determined to be 46.1 mol%. DNA-DNA hybridization values between strain THG-SD5.5T and C. ginsengihumi KACC 17604T and C. rupis KACC 14521T were 45.1% and 15.6%, respectively. Strain THG-SD5.5T was also found to be able to grow at 24–33 °C, at 0–5% NaCl and at pH 5.5–9.0. The major fatty acids were identified as anteiso-C15:0, C16:0, anteiso-C17:0 and C18:0. The dominant respiratory quinone was identified as menaquinone-7 (MK-7). The polar lipids were found to be diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, an unidentified aminolipid, two unidentified phospholipids and three unidentified lipids. Based on these phenotypic, genotypic and phylogenetic characterisations, strain THG-SD5.5T (= KACC 19338T = CGMCC 1.16304T) is concluded to represent a novel species of the genus Chitinophaga, for which the name Chitinophaga aurantiaca sp. nov. is proposed.
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This work was carried out with the support of “Cooperative Research Program for Agriculture Science & Technology Development (Project No. PJ012655042018)” Rural Development Administration, Republic of Korea.
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Su-Kyung Kim and MooChang Kook are co-first authors.
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Kim, SK., Kook, M., Yan, ZF. et al. Chitinophaga aurantiaca sp. nov., isolated from a soil sample from a tangerine field. Antonie van Leeuwenhoek 112, 1189–1197 (2019). https://doi.org/10.1007/s10482-019-01251-1
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DOI: https://doi.org/10.1007/s10482-019-01251-1