sunflower downy mildew, caused by plasmopara halstedii, is one of the most important diseases of this crop in west-azarbaijan, urmia. it causes economic yield losses during favorable environmental conditions. the pathogen is a polycyclic one, and it is likely that physiological changes occur in its population and subsequent appearance of new physiological races. hence, identification of the exi...

Sunflower is a crop that has many economic values and ornamental usages. However, its production can be hampered due to various diseases such as downy mildew, gray mold, leaf scars, it challenging for farmers identify disease-prone conditions with traditional approaches. Thus, computerized model composed of vision, artificial intelligence, machine learning the demand age detect in plants effici...

Considerable progress has been made in managing Peronospora belbahrii, an oomycete pathogen that causes basil downy mildew, since 2007, when it was first detected the United States. Conventional fungicides have registered and shown effective against P. belbahrii replicated experiments recent years. Unfortunately, because of their specific modes action biology, some are at risk for resistance de...

Downy mildew, caused by the oomycete pathogen Pseudoperonospora cubensis (Berkeley & Curtis) Rostov, is a major foliar disease of cucumber. Ten years after the reemergence of P. cubensis, downy mildew continues to be a major threat to cucumber production in the United States. Cucumber accessions with high levels of resistance have been identified. Development of cultivars with high levels of re...

RPW8 genes are atypical broad-spectrum genes that provide resistance to powdery mildew, downy mildew, the cauliflower mosaic virus in Arabidopsis thaliana, and powdery mildew in tobacco. They play important roles in basal plant pathogen defense. They also provide insights into a novel disease resistance mechanism. In this study, we report on homologous RPW8 genes in Vitis pseudoreticulata. Five...