Heavy metals concentration in wheat spike may be related to resistance to Fusarium head blight

Fungal disease can damage plants and crops, causing major losses in agricultural activities and food production. The aim of this study was to compare the content of ۱۴ elements in the spike of two wheat cultivars with contrasting level of resistance against F.graminearum, Falat as susceptible and Sumai۳ as resistant. All elements were determined by ICP-MS analysis. According to our results content of Cu and Fe in Sumai۳ was higher than Falat. In contrast, in Falat content of P, Zn, K, Ni and Si was significantly higher than Sumai۳. The resistant cultivar (Sumai۳) had higher content of heavy metals (Cd, Hg, Pb) in spike which may be toxic for pathogen proliferation and spread. Further studies in other wheat cultivars with different levels of resistance to fungal pathogens can help to better understand the mechanism of structural resistance through the accumulation of toxic metals.

کلیدواژه ها:

Falat ، Fungal pathogen ، ICP-MS ، Structural resistance ، Sumai۳