Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report on the increased distribution of pathotype 704 of Plasmopara halstedii in Hungary.

Abstract

During surveys conducted to monitor the distribution of Plasmopara halstedii pathotype 704 in Hungary, infected sunflower (2-5 samples/site) showing typical symptoms of downy mildew (leaf chlorosis and severe stunting) from 4 different sites in the eastern region of the country were collected in mid-June 2012. The causal pathogen was identified as Plasmopara halstedii based on the internationally standardized method for race identification of P. halstedii. This is thought to be the first report of the wider distribution of pathotype 704 of P. halstedii in both Hungary and central Europe.