We had previously isolated and characterized syringolin A, one of the molecular determinants secreted by Pseudomonas syringae pv syringae that is perceived by nonhost plant species such as rice. Here, we show that syringolin A is recognized by wheat and that it induces the accumulation of gene transcripts and increases protection against powdery mildew when applied before inoculation. Moreover,...

Powdery mildew is a common, economically important disease in the wheat growing area of Serbia. A large-scale virulence survey its causal agent Blumeria graminis f. sp. tritici population was performed period 1995–2013. total 1013 isolates were recovered from collected chasmothecial samples. Among them, 862 unique pathotypes identified using differential set 20 lines with known powdery (Pm) res...

Broad-spectrum disease resistance is a highly valuable trait in plant breeding and attracts special attention in research. The Arabidopsis gene locus RESISTANCE TO POWDERY MILDEW 8 (RPW8) contains two adjacent homologous genes, RPW8.1 and RPW8.2, and confers broad-spectrum resistance to powdery mildew. Remarkably, the RPW8.2 protein is specifically localized to the extrahaustorial membrane (EHM...

Objectives: 1. Develop a weather-based model for scheduling fungicide applications to improve disease control and reduce fungicide usage. 2. Evaluate efficacy of various products for control of apple powdery mildew. 3. Evaluate reduced DMI and strobilurin fungicide programs, in combination with inorganic salts, for control of powdery mildew. 4. Evaluate various reduced fungicide programs, alone...

Podosphaera xanthii causes powdery mildew of cucumber, and is associated with significant yield quality losses. Development resistant or tolerant varieties the most effective eco-friendly strategy for management. An important host resistance mechanism based on recognition conserved genes, resulting in durable resistance. To determine mechanisms total RNAs were isolated from cultivar Meltem, lin...

Arabidopsis thaliana is a host to the powdery mildew Erysiphe cichoracearum and nonhost to Blumeria graminis f. sp hordei, the powdery mildew pathogenic on barley (Hordeum vulgare). Screening for Arabidopsis mutants deficient in resistance to barley powdery mildew identified PENETRATION3 (PEN3). pen3 plants permitted both increased invasion into epidermal cells and initiation of hyphae by B. g....

Wheat powdery mildew, caused by the biotrophic fungus Blumeria graminis f. sp. tritici ( Bgt ), is a serious disease of wheat worldwide that can cause significant yield losses. Growing resistant cultivars most cost-effective and eco-soundly strategy to manage disease. Therefore, high breeding priority identify genes be readily used either singly or in combination for effective resistance mildew...