the compatibility studies of pseudomonas fluorescens (pf1) with azoxystrobin at differ-ent concentrations viz., 100, 150, 200, 250 and 300 ppm revealed that it was compatible with all the concentrations of azoxystrobin tested and the growth of the bacterium was unaffected even at the maximum concentration of 300 ppm. the field experiment revealed a foliar application of pf1 (2.5 kg ha-1) and az...

Abstract Healthy seeds play an important role in growing a healthy crop. Seed health testing is performed by detecting the presence or absence of insect infestation and seed-borne diseases caused fungi, bacteria, viruses. The most detrimental effect pathogens contamination previously disease-free areas spread new diseases. Sowing contaminated infected not only spreads but can also reduce yields...

In order to investigate phylogenetic relationships of the Peronosporomycetes (Oomycetes), nuclear large subunit ribosomal DNA sequences containing the D1 and D2 region were analyzed of 92 species belonging to the orders Peronosporales, Pythiales, Leptomitales, Rhipidiales, Saprolegniales and Sclerosporales. The data were analyzed applying methods of neighbor-joining as well as maximum parsimony...

Powdery mildew of sugar beet, a disease of major economic significance, was first described at the beginning of the 20th century, and since then there has been some confusion over the correct taxonomic identity of the causal agent. In Europe, the fungus was initially classified as the novel species Microsphaera betae, later re-named Erysiphe betae, whilst in America it was identified as E. poly...

Once a pathogen, always a pathogen? Not so—the fungus Pseudozyma flocculosa provides an intriguing example of a pathogen that took a different route (reviewed in Bélanger et al., 2012). Initially isolated from a powdery-mildew–infected leaf, P. flocculosa acts as a strong antagonist of powdery mildews (Erysiphales) and was thus developed as a biocontrol agent. However, the mechanism by which it...

Downy and powdery mildews are two of the main diseases threatening grapevine cultivation worldwide caused by phytopathogens Plasmopara viticola Uncinula necator, respectively. These may cause severe damage to grapevines inducing wilting plant organs, including bunches, especially when vines untreated. This fact, together with widespread these pathogens due large extensions land dedicated monocu...