The resistant levels of rice(Oryza sativa) blast resistance genes are obviously different.Investigating the expression patterns of defense-related genes in different rice blast resistant monogenic lines is helpful for understanding the molecular mechanism of blast resistance gene against Magnaporthe oryzae.In the present study,the expression variation of defense-related genes chitinase 1 gene(Cht-1),β-1,3-glucanase gene(Glu),phenylalanine ammonia lyase gene(PAL) and peroxidase gene(POX22.3) were analyzed by...