HRS/IRR in E.coli  K12 Implanted by Low Energy Ion Beam and Effect of  recA Gene on HRS/IRR

YANG  Tian-you; LI Pei-rui; TIAN Jing; LI Zong-wei; QING Guang-yong

doi:10.11804/NuclPhysRev.25.04.397

YANG Tian-you, LI Pei-rui, TIAN Jing, LI Zong-wei, QING Guang-yong. HRS/IRR in E.coli K12 Implanted by Low Energy Ion Beam and Effect of recA Gene on HRS/IRR[J]. Nuclear Physics Review, 2008, 25(4): 397-401. DOI: 10.11804/NuclPhysRev.25.04.397

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HRS/IRR in E.coli K12 Implanted by Low Energy Ion Beam and Effect of recA Gene on HRS/IRR

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The HRS/IRR in Escherichia coli had been investigated withE.coli K12 wild strain MG1655 irradiated by the 30 keV N⁺. The curve of the dosesurvival effect showed the 30 keV N⁺ ion could induce the HRS/IRR at the dose less than 10×10¹⁴ ions/cm². Moreover， the effect of recA gene in HRS/IRR inducement had been researched with three E.coli K12 strains， wild strain MG1655， LE392 (recA+) and DH5α(recA-). The results showed the IRR was disappeared in recA- DH5α strain， but the HRS/IRR appeared in wild strain MG1655 and recA⁺ LE392， which suggested that recA  gene and the DNA damages & their repairs including recA gene were essential element in HRS/IRR inducement.

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HRS/IRR in E.coli K12 Implanted by Low Energy Ion Beam and Effect of recA Gene on HRS/IRR

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