耐辐射动球菌耐辐射及相关特性研究进展

Progress in radio-resistance and related characteristics of Kineococcus radiotolerans

核能的利用对于缓解能源紧张、减少温室气体排放具有重要意义,然而核能利用产生的放射性废料对环境的影响成为核能发展的掣肘。耐辐射动球菌(Kineococcus radiotolerans)是一种从核污染环境中分离出来的,可在辐射、强碱、高盐、干旱、高金属离子浓度、高渗透压及强化学毒性等严酷环境中存活的革兰氏阳性耐辐射菌,有望应用于环境生物修复、医学等领域。本文就K.radiotolerans的生理生化特性、抗辐射性、抗氧化性、抗毒性有机物等特性的研究现状进行综述。

Nuclear energy plays an important role in relieving the energy shortage and reducing the emission of greenhouse gas, however, the adverse effect caused by radioactive wastes impedes the development of nuclear energy. Kineococcus radiotolerans is a gram positive bacterium isolated from nuclear waste polluted environment and can survive under harsh conditions, such as radiation, strong alkali, high salinity, drought, high concentration of mental ions, high osmotic pressure, and high chemical toxicity. It can be potentially used in environmental bioremediation and medical studies. The current status on its physicochemical characteristics, radio-resistance, anti-oxidation, resistance to chemical toxicity is reviewed in this paper.