Powdery mildew is one of the most destructive wheat diseases, and it causes a constant need for improvement resistance. Transfer resistance genes from wild relatives into genetic pool could be an alternative to use fungicides. This review contains classification powdery on different ontogenetic stages (seedling adult resistance), expression trait (quantitative qualitative), conferring (wide-spe...

Barley ( Hordeum vulgare ) is an important crop in Turkey. In this study, 37 barley fields Batman central district and Beşiri (Batman), Gercüş Hasankeyf Kozluk Sason Kocaköy (Diyarbakır), Kurtalan (Siirt), Midyat (Mardin) districts were examined for the presence of leaf diseases. addition, 24 naturally grown wild H. spontaneum populations Beşiri, Hasankeyf, inspected fields, scald caused by Rhy...

Powdery mildew fungi are obligate biotrophic pathogens that only grow on living hosts and cause damage in thousands of plant species. Despite their agronomical importance, little direct functional evidence for genes of pathogenicity and virulence is currently available because mutagenesis and transformation protocols are lacking. Here, we show that the accumulation in barley (Hordeum vulgare) a...

Resistance to sterol 14alpha-demethylase inhibiting fungicides (DMIs) has been correlated with mutations in the CYP51 gene, which encodes the target enzyme eburicol 14alpha-demethylase. To test the hypothesis that variation in the CYP51 gene explains variation for DMI sensitivity in barley and wheat powdery mildew species, this gene was sequenced from isolates of Blumeria graminis f.sp. hordei ...

The activity of esterase secreted by conidia of wheat powdery mildew fungus, Blumeria graminis f. sp. tritici, was assayed using indoxyl acetate hydrolysis, which generates indigo blue crystals. Mature, ungerminated, and germinating conidia secrete esterase(s) on artificial media and on plant leaf surfaces. The activity of these esterases was inhibited by diisopropyl fluorophosphate, which is s...