In Sudan, oilseed crops rank second in production area after cereals, and sunflower (Helianthus annuus) is considered a promising (Mohammed, 2010). Leaf blight caused by Alternariaster helianthi destructive disease of sunflower. During autumn 2018 2019 diseased sunflowers with dark brown to black leaves stem spots were observed the Blue Nile state, Sudan. The incidence major rain-fed areas, app...

Photoactive compounds might be used as effective pesticide agents, with almost no impact on the environment, being nontoxic and not mutagenic. The point is, that nontoxic photoactive compound accumulates within the insect body and, following exposition to visible light, induces lethal photochemical reactions and death of target pest. The aim of this study was to determine, whether hematoporphyr...

We investigated the diversity of endophytic fungi found on grape (Vitis labrusca cv. Niagara Rosada) leaves collected from Salesópolis, SP, Brazil. The fungi were isolated and characterized by amplified ribosomal DNA restriction analysis, followed by sequencing of the ITS1-5.8S-ITS2 rDNA. In addition, the ability of these endophytic fungi to inhibit the grapevine pathogen Fusarium oxysporum f. ...

The ability of an image analysis routine to differentiate between spores of eleven allergenic fungal genera was tested using analysis based on seven basic and up to 17 more complex features, extracted from digitised images. Fungal spores of Alternaria, Cladosporium, Fusarium, Aspergillus, Penicillium, Botrytis, Epicoccum, Exserohilum, Ustilago, Coprinus and Psilocybe were examined in a series o...