In order to identify Daldinia species in Guilan province, several specimens were collected during 2011–13. A total of six taxa, including Daldinia caldariorum (on Morus alba); D. childiae (on Parrotia persica, Pterocarya fraxinifolia, Morus alba, Quercus sp., Prunus sp., Citrus sinensis, Gleditschia caspica, Buxus sempervirens, Carpinis betulus and Alnus subcordata); D. gelatinoides (on M. alba...

in order to identify daldinia species in guilan province, several specimens were collected during 2011–13. a total of six taxa, including daldinia caldariorum (on morus alba); d. childiae (on parrotia persica, pterocarya fraxinifolia, morus alba, quercus sp., prunus sp., citrus sinensis, gleditschia caspica, buxus sempervirens, carpinis betulus and alnus subcordata); d. gelatinoides (on m. alba...

Although phytophagous insects and plant pathogens frequently share the same host plant, interactions among such phylogenetically distant taxa have received limited attention. Here, we place pathogens and insects in the context of a multitrophic-level community. Focusing on the invasive powdery mildew Erysiphe alphitoides and the insect community on oak (Quercus robur), we demonstrate that milde...

BACKGROUND Metrafenone has been used in Europe in integrated pest management programmes since 2006 to control powdery mildews, including Erysiphe necator. Its exact mode of action is not known, but it is unique among fungicide classes used in powdery mildew management. Recently, resistance to metrafenone was reported in Blumeria graminis f. sp. tritici. In this study we investigated metrafenone...

Diseases of the United States Department of Agriculture. It has been continued at the University of Michigan. Paper of the Department of Botany and of the University Herbarium, University of Michigan No. 397. 1 Mains, E. B., "Rye Resistant to Leaf Rust, Stem Rust and Powdery Mildew," Jour. Agr. Res., 32, 201-221 (1926). 2 Mains, E. B., and Dietz, S. M., "Physiologic Forms of Barley Mildew, Erys...

Increases in two extracellular peroxidases were observed following inoculation of barley (Hordeum vulgare L.) with the powdery mildew pathogen (Erysiphe graminis DC.: Fr. f. sp. hordei Em. Marchal). The more prominent isozyme, P8.5, was purified from intercellular wash fluids by acetone precipitation, ion-exchange chromatography, isoelectric focusing, and gel filtration. Purified P8.5 is a heme...