Deinococcus koreensis sp. nov., a gamma radiation-resistant bacterium isolated from river water
| Autor: | Gang-Guk Choi, Kiwoon Baek, Min-Kyu Kim, Ahyoung Choi, Sangyong Lim, Eu Jin Chung |
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| Rok vydání: | 2018 |
| Předmět: |
DNA
Bacterial 0301 basic medicine Peptidoglycan Radiation Tolerance Microbiology 03 medical and health sciences chemistry.chemical_compound Rivers RNA Ribosomal 16S Republic of Korea Deinococcus Phospholipids Phylogeny Ecology Evolution Behavior and Systematics Alanine chemistry.chemical_classification Base Composition Phylogenetic tree Strain (chemistry) biology Fatty Acids Vitamin K 2 Sequence Analysis DNA General Medicine 16S ribosomal RNA biology.organism_classification Bacterial Typing Techniques Amino acid 030104 developmental biology chemistry Gamma Rays Glycolipids Bacteria |
| Zdroj: | International Journal of Systematic and Evolutionary Microbiology. 68:2545-2550 |
| ISSN: | 1466-5034 1466-5026 |
| Popis: | A gamma radiation-resistant, Gram-stain-negative, rod-shaped bacterial strain, designated SJW1-2T, was isolated from freshwater samples collected from the Seomjin River, Republic of Korea. The 16S rRNA gene sequence analyses showed that strain SJW1-2T was most closely related to Deinococcus metalli 1PNM-19T (94.3 % sequence similarity) and formed a robust phylogenetic clade with other species of the genus Deinococcus . The optimum growth pH and temperature for the isolate were pH 7.0–7.5 and 25 °C, respectively. Strain SJW1-2T exhibited high resistance to gamma radiation. The predominant respiratory quinone was MK-8. The polar lipid profile consisted of different unidentified glycolipids, two unidentified lipids, two unidentified phospholipids and an unidentified phosphoglycolipid. The major peptidoglycan amino acids were alanine, d-glutamic acid, glycine and l-ornithine. The predominant fatty acids (>10 %) were summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c) (25.2 %) and C16 : 0 (21.2 %), and the DNA G+C content was 69.5 mol%. On the basis of phenotypic, genotypic and phylogenetic analyses, strain SJW1-2T (=KACC 19332T=NBRC 112908T) represents a novel species of the genus Deinococcus , for which the name Deinococcus koreensis sp. nov. is proposed. |
| Databáze: | OpenAIRE |
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