不同LET ^12C^6＋离子对生防菌BJ1的辐射诱变效应  

Mutagenic Effects of Biocontrol Bacterium-BJ1 Irradiated by Different LET of ^(12)C^(6+) Ion Beam

作　　者：马爽[1,2] 李文建[1] 王菊芳[1] 周利斌[1] 余丽霞[1] 董喜存[1,2] 陆栋[1,2] 刘敬[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000 [2]中国科学院研究生院,北京100049

出　　处：《原子核物理评论》2009年第2期168-171,共4页Nuclear Physics Review

基　　金：中国科学院西部之光人才培养计划资助项目(O606180XB0)~~

摘　　要：选取高低两个LET点(40和60keV/m),剂量点分别为50,100,200,400,600Gy进行辐照处理,研究了生防菌的存活率与突变率的关系,抑菌谱以及活性等。结果表明,在高LET条件下,低剂量辐照就可以得到较多的突变体,并且BJ1有较高的存活率和突变谱,有利于筛选优良的正突变体。因此高LET较低LET有更为明显的辐射诱变效应。To explore the effects of different linear energy transfer（LET）of ^12C^6＋ ion Beam irradiation on BJ1, survivals and hiocontrol effects were cultured and treated with LET= 40 and 60 keV/μm at the doses of 50, 100, 200, 400 and 600 Gy, respectively. The results showed more mutations and hiocontrol charts and higher survivals were obtained with high LET（60 keV/μm） irradiations at lower dose, which was useful to screen good positive mutations. Based on the results above, it could be concluded that the condition of high LET（60 keV/μm） had obvious mutagenic effects than that of low LET（40 keV/μm）.

关 键 词：传能线密度 C离子 生防菌BJ1 辐射 诱变效应 

分 类 号：O571.5[理学—粒子物理与原子核物理]