Abstract:  Rice lesion mimic mutant is a kind of rice mutant which spontaneously forms lesion mimic phenotype on the rice leaf surface， and some of them will show enhanced resistance to the infection of rice pathogen， but the lesion mimic gene which controls the phenotype seems to be involved in different defense\|related pathway. This thesis mainly summarized the discovery and excavation of rice lesion mimic mutant， carried out functional analysis in terms of lesion mimic gene cloning， and made an expectation on its application in disease resistance research of rice.

Key words:  rice, lesion mimic mutant, gene clone, functional analysis