一、前言为了防止自发和诱发的DNA损伤,大多数生物的细胞有一些酶可使受损的DNA恢复原状,这就是修复。1964年以来,对修复过程的研究有了迅速发展,并在突变和染色体畸变形成机理的看法上引起了一场革命。目前在噬菌体、大肠肝菌、单细胞真菌、人和啮齿类的细胞培养方面,有大量可用的关于修复机理的资料。相反,对于高等植物DNA修复机理的研 I. INTRODUCTION In order to prevent spontaneous and induced DNA damage, most organisms have enzymes that restore damaged DNA. This is repair. Since 1964, there has been a rapid development in the study of the healing process and a revolution in the perception of the mechanism of mutations and chromosomal aberrations. There is currently a plethora of available information on repair mechanisms for phage, E. coli, unicellular fungi, human and rodent cell culture. On the contrary, for the higher plant DNA repair mechanism research