Homothallism in Sphaerotheca fuliginea (Schlecht.) Pollacci

Powdery mildew (Sphaerotheca fuliginea) resistance in melon is selectable at the haploid level.

The major cause of powdery mildew in melons (Cucumis melo L.) is the fungus Sphaerotheca fuliginea. There are several cultivar- and season-specific races of this fungus. In order to control powdery mildew, it is important to introduce resistance to fungal infection into new cultivars during melon breeding. Haploid breeding is a powerful tool for the production of pure lines. In this study, it w...

Effects of certain fungicides leaf infection yield and quality of cantaloup infected by sphaerotheca fuliginea

Cucumber Response to Sphaerotheca fuliginea: Differences in Antioxidant Enzymes Activity and Pathogenesis-Related Gene Expression in Susceptible and Resistant Genotypes

Cucurbits powdery mildew is one of the most detrimental diseases of cucumber plants worldwide. A detailed insight into the biological processes leading to resistance or susceptibility to the pathogen would pave the road for an efficient disease-resistance breeding program. In the present study, the molecular and biochemical responses of a resistant vs. a susceptible cucumber cultivar infected w...

The genetic system controlling homothallism in Saccharomyces yeasts.

There are four types of life cycles in Saccharomyces cerevisiae and its related species. A perfect homothallic life cycle (the Ho type) is observed in the classic D strain. Two other types show semi-homothallism; one of them shows a 2-homothallic diploid:2alpha heterothallic haploid segregation (the Hp type) and another, a 2-homothallic:2a segregation (the Hq type). In the segregants from these...

Hypothesis on the molecular basis of the antifungal activity of N-substituted imidazoles and triazoles.

known as denmert) caused total loss of its fungicidal activity towards Sphaerotheca fuliginea and Monilinia fmctigena. These workers suggested that the co-ordination of the heterocyclic meta-nitrogen atom of buthiobate to a cationic receptor site may be important for its fungicidal activity. The cationic receptor site mentioned would appear to be the Fez+ of the cytochrome P-450 catalysing step...