| 耐辐射菌株筛选及其胞外代谢产物抗紫外辐射物质特性 |
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| 引用本文： | 谢玉清,张志东,宋素琴,茆军.耐辐射菌株筛选及其胞外代谢产物抗紫外辐射物质特性[J].核农学报,2010,24(6):1172-1176. |
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| 作者姓名： | 谢玉清 张志东 宋素琴 茆军 |
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| 作者单位： | 新疆农业科学院微生物应用研究所,新疆,乌鲁木齐,830091 |
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| 基金项目： | 农业公益性行业科研专项经费项目，新疆维吾尔自治区自然科学基金 |
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| 摘 要： | 从经8kGy γ辐照处理的新疆沙漠样本中分离到1株红色球菌——RV113，鉴定为奇异球菌属（Deinococcus）的新菌。试验证明该菌胞外代谢产物具有抗紫外辐射特性，能有效提高E.oli JM109紫外辐射抗性。紫外吸收光谱与清除DPPH自由基特性试验说明，菌株RV113的正已烷、乙酸乙酯、正丁醇3种溶剂萃取的胞外代谢产物具有降低紫外辐射直接损伤与间接损伤的作用。
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| 关 键 词： | 奇异球菌 胞外代谢产 抗紫外辐射 |
ISOLATION OF RADIATION-RESISTANT BACTERIUM AND ITS ANTI-ULTRAVIOLET RADIATION PROPERTIES OF EXTRACELLULAR METABOLITES |
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| XIE Yu-qing,ZHANG Zhi-dong,SONG SU-qing,MAO Jun.ISOLATION OF RADIATION-RESISTANT BACTERIUM AND ITS ANTI-ULTRAVIOLET RADIATION PROPERTIES OF EXTRACELLULAR METABOLITES[J].Acta Agriculturae Nucleatae Sinica,2010,24(6):1172-1176. |
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| Authors: | XIE Yu-qing ZHANG Zhi-dong SONG SU-qing MAO Jun |
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| Institution: | Institute of Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi,Xinjiang |
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| Abstract: | A red spherical bacterium strain designed as RV113, was isolated from the 8kGy irradiated samples of desert in Xinjiang Province. It was characterized by strong radiation-resistance and belonged to the genus of Deinococcus through taxonomic identification. Its extracellular metabolites have the ability to improve the resistance of E. coli JM109 to ultraviolet radiation. It has been proved that N-hexane extracts, ethyl acetate extracts and N-butanol extracts of extracellular metabolic could reduce the direct injury and indirect injury through the measurement of ultraviolet absorption spectral properties and free radical scavenging activity of DPPH. |
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| Keywords: | Deinococcus extracellular metabolites anti-ultraviolet radiation |
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