WU Jian1 DAI Guifu1 LI Jinfang2 ZHAO Yanheng2 ZHANG Xiaohong3 1. Biological effects of N+ ion implantation and UV radiation on Streptomyces albus[J]. Nuclear techniques, 2005, (8): 598-602.
WU Jian1 DAI Guifu1 LI Jinfang2 ZHAO Yanheng2 ZHANG Xiaohong3 1. Biological effects of N+ ion implantation and UV radiation on Streptomyces albus[J]. Nuclear techniques, 2005, (8): 598-602.DOI:
The results of both 30 keV N + ion implantation and UV irradiation of Streptomyces albus showed com-plicate biological effects. The“saddle shape”pattern of the dose ? dependent curve formed by N + ion implantation with low energy was studied
and it proved that vacuum was not the reason
and in fact
the “saddle shape”curve may be regarded as a HRS/IRR (hyper-radiosensitivity / increased radiaoresistance) effect caused by low dose irradiation. But Streptomyces albus UV irradiated after vacuum treatment only showed IRR effect or hormesis (survival rate >100%). The streptomycin resistance mutation of Streptomyces albus caused by low energy N+ ion implantation and UV irradiation was also studied. The results showed that UV radiation is one effective means for streptomyces albus breeding.