Abstract:

Femtosecond laser induced micro-organisms mutation has become a new microbial technology，because of its characteristics of ultrafast pulse，high peak power and focusing on a small size. In this paper，compared to the advantages and disadvantages of the traditional low-power He-Ne laser irradiation，the technology of femtosecond laser induced micro-organisms mutation is discussed. Meanwhile，compared to traditional laser mutation mechanism of micro-organisms，the mechanisms of multi-photon absorption，formation of plasma，formation of reactive oxygen species，DNA damage and self-repair are summarized. Finally，the prospect for technology of femtosecond laser induced micro-organisms mutation is given，and the combination of key-enzyme activity measurement and dynamics parameters determination is important in choosing the technological parameters of femtosecond laser induced micro-organisms mutation.