Comparison of microscopy techniques to visualize powdery mildew (Erysiphales) conidiophores.

Powdery mildew of soybeans.

Origin and evolution of the powdery mildews (Ascomycota, Erysiphales)

Molecular phylogeny suggests a close relationship of Asteraceae to the early evolution of Golovinomyces. The family Asteraceae, with a geographic origin in South America, expanded into the Northern Hemisphere, where it may have been infected by an ancestor of Golovinomyces, thus starting a close hosteparasite relationship. Using this event as a calibration point, we designed molecular clocks fo...

A new record of Erysiphales for mycobiota of Iran

None (Members of Erysiphales cause powdery mildew diseases on wide host rang and produce whitish primary mycelium on surface of infected parts. Based on microscopic study of one specimen on Jasminum sp., structures of fungus including conidiophores and conidia were observed. Foot cells of conidiophores were cylindrical or curved in basal part, followed by 1-2 shorter cells. Conidia were ellipso...

Powdery Mildew of Cucurbits in Florida1

1. This document is HS1067 one of a series of the Horticultural Sciences Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date June 28, 2006. Visit the EDIS Web Site at http://edis.ifas.ufl.edu. 2. Hector G. Nuñez-Palenius, Graduate Assistant; Daniel J. Cantliffe, Professor and Chair, Horticultural Scienc...

Competitive Performance of Transgenic Wheat Resistant to Powdery Mildew

Genetically modified (GM) plants offer an ideal model system to study the influence of single genes that confer constitutive resistance to pathogens on the ecological behaviour of plants. We used phytometers to study competitive interactions between GM lines of spring wheat Triticum aestivum carrying such genes and control lines. We hypothesized that competitive performance of GM lines would be...