ABCG2 and fungal infectious disease: Studies have shown that ABC transporter CDR4 in N. crassa is responsible for transporting toxins within host plant cells during fungal infection and enhancing its own drug resistance [60,61], and the plant pathogen F. graminearum exhibits reduced virulence to wheat following the knockout of genes encoding ABC transporters FgABC1 and FgABCC9 [62,63].