黑色素对λ溶原菌及其紫外线诱导性的影响

黑色素对λ溶原菌及其紫外线诱导性的影响 Effect of Melanin on Growth and UV Induction of λ Lysogenic Strain 彭方 PENG Fang 1 first-author 方呈祥 FANG Cheng\|xiang 1 彭珍荣 PENG Zhen\|rong 1 武汉大学生命科学学院,武汉,430072 武汉大学生命科学学院,武汉,430072 College of Life Sciences Wuhan University College of Life Sciences Wuhan University 利用嗜麦芽假单胞菌135制备的L-多巴黑色素对溶原菌E.coli（λ+ ）及其紫外线诱导性的影响进行了研究,结果表明:这种黑色素对该溶原菌的生长无影响,也不诱导形成λ噬菌体颗粒,但对该溶原菌的紫外线致死作用具有保护效应,0.9 g/L黑色素的保护效应近似于100% ;黑色素对溶原菌的紫外线诱导性有抑制效应或增强效应,0.3 g/L黑色素对溶原菌的紫外线诱导性的抑制效应最好. Effect of L dopa melanin on growth and ultraviolet induction of λ lysogenic strain E.Coli （λ +） has been studied. Results showed that the melanin not affected growth of E.Coli （λ +）, and induction which results in lysogenic cells lysis wasn\’t also observed. However, It is found that the melanin is able to protect E.Coli （λ +） from the death caused by UV irradiation. The protective efficiency reached 100% under concentration of 900mg/L melanin. Moreover, the melanin has inhibitory or increase efficiency on UV induction of E.Coli （λ +） and its inhibitory efficiency is the hightest under concentration 300 mg/L.\; 黑色素 λ溶原菌 紫外线诱导 melanin λ lysogenic strain UV induction Q935 湖北省科委资助!（027960131） 1999-06-01 2021-04-01 6