Fungi, mycotoxins and phytoalexin in peanut varieties, during plant growth in the field

► Fusarium spp. was isolated with high frequency in kernels and pods of peanuts. ► AFBs were detected in 20% and 10% of samples of the IAC 886 and Caiapó varieties. ► Analysis showed CPA in 65% and 25% of samples of the IAC 886 and Caiapó varieties. ► trans-Resveratrol was found in 73.3% of leaf samples in both varieties studied. ► Co-occurrence of aflatoxins and CPA was detected in most contaminated samples.