To further understand the correlationship between Pst-induced TaMCA1 and Pst-induced cell death, we assayed the expression levels of a few selected genes in TaMCA1 knockdown plant after infection with the stripe rust fungus, including catalase (TaCAT), class III peroxidase (TaPOD) and superoxide dismutase (TaSOD), Triticum aestivum metacaspase 4 (TaMCA4) and Triticum aestivum defender against cell death (TaDAD2). This evidence concerns the gene CAT and infection.