Co-52 resistance allele contributes to induce basal defense against Colletotrichum lindemuthianum race 7

ABSTRACT The role of the Co-52 and Co-42 alleles in early activation bean immunity against Colletotrichum lindemuthianum is poorly known. Thus, by using anthracnose-susceptible Sutagao cultivar anthracnose-resistant G2333, this study aimed to evaluate presence SCAR markers, as well their respective defense responses, histochemical tests diferential gene expression. results showed that allele contributes responses anthracnose, since susceptible beans with without decreased both number callose deposits accumulation reactive oxygen species at fungus attack sites. Additionally, for cultivar, there was a late response defense-related genes such PR-1, PR-3 Pv-POD. induce mechanisms Phaseolus vulgaris C. interaction.