A rust fungi species, Uromyces euphorbiae Cooke & Peck (Pucciniaceae) on Euphorbia cheiradenia Boiss. Hohen. (Euphorbiaceae) is reported for the first time from Malatya Turkey and also as a new host species fungi. The morphological microscopical features of this are described with figures.

1 Laboratoire de génétique moléculaire, immunologie et biotechnologie Faculté des Sciences de Tunis, Tunisie. 2 Laboratoire de grande culture et de protection des végétaux, Institut National de Recherche Agronomique de Tunis, Tunisie. 3 Département de Phytologie, Pavillon Charles-Eugene-Marchand, Faculté des sciences de l’agriculture et de l’alimentation, Université Laval, Québec, Canada. 4 Int...

BACKGROUND The potential of systemic neonicotinoid insecticides to control potato leafhopper, Empoasca fabae (Harris), a damaging pest of wine grapes in the eastern United States, was investigated. Soil or foliar applications were made to potted or field-grown vines, and the response of leafhoppers was determined in clip cages over the following month on young or mature leaves. RESULTS Foliar...

In the framework of study on rust fungi of Fabaceae and based on the study of herbarium and newly collected specimens, six Uromyces species are recognized on Medicago spp. and Trifolium spp. from Iran. Among these species, U. fallens is recorded as new member for the Iranian rust flora. U. striatus is recorded as main causal agent of rust on lucerne (Medicago sativa) in Iran. Moreover, U. trifo...

The potato leafhopper, Empoasca fabae (Harris) (Hemiptera: Cicadellidae), is an emerging pest of potato and insecticide applications to control this insect have increased in recent years. Based on field observations of leafhopper-crop dynamics, however, currently recommended action thresholds seem to be overly conservative. As a result, we initiated two experiments designed to quantify the impa...

GOLD, R. E., and K. MENDGEN. 1984. Cytology of basidiospore germination, penetration, and early colonization of Phaseolus vulgaris by Uromyces appendiculatus var. appendiculatus. Can. J. Bot. 62: 1989-2002. Cytological studies were done on a compatible interaction between Phaseolu.\ vulgaris and Uromyces appendiculatus var. appendiculatus. The cytoplasm of germinated basidiospores contained num...

GOLD, R. E., and K. MENDGEN. 1984. Vegetative development of Uromyces appendiculatus var. appendiculatus in Phaseolus vulgaris. Can. J. Bot. 62: 2003-2010. The morphology of intercellular and intracellular hyphae derived from basidiospores of Uromyces appendiculatus var. appendiculatus is described. Light and electron microscopic observations of the bean tust fungus were made on susceptible lea...

Uromyces fabae is a major pathogen of broad bean, Vicia faba. U. fabae has served as a model among rust fungi to elucidate the development of infection structures, expression and secretion of cell wall degrading enzymes and gene expression. Using U. fabae, enormous progress was made regarding nutrient uptake and metabolism and in the search for secreted proteins and effectors. Here, we present ...