Involvement of abiotic stress tolerance mechanisms in biotic stress tolerance in durum wheat

The objective of our study is to implicate the mechanisms tolerance abiotic stress by synthesis metabolites in biotic stress. extracted metabolites; proline, sugars and polyphenols from durum wheat seedlings subjected heat shock (40 °C), used test antifungal activity on two fungal strains, powdery mildew penicillium, under controlled conditions. boussellam variety more tolerant applied than Ciccio Vitron varieties. concentration three osmolytes varies one another; it increases genotypes stressed compared controls. Antifungal results appearance an inhibition zone around disc impregnated with studied extract. Sugars have proven be a highly effective agent proline maximum values (28,33 ± 2 mm) oidium (29 1 penicillium.