After the first report of grapevine decline caused by Botryosphaeriaceae inSicily in 2007, epidemiological studies carried out in mature vineyards until 2011 confirmedthe widespread occurrence of “Botryosphaeria dieback” and the “Esca complex”disease. Dieback symptoms were also recently observed in two young vineyards inPartanna and Castellammare del Golfo in western Sicily (Trapani province). Decliningvines were inspected for grapevine trunk disease (GTD) symptoms, and were uprootedand submitted for analyses. Fungal isolates were collected and identified using culturingand molecular analyses. One isolate per identified species was inoculated to threegrapevine shoots to evaluate pathogenicity and fulfil Koch’s postulates. Several GTDBotryosphaeriaceae pathogens in the genera Cadophora, Ilyonectria, Neonectria, Phaeoacremoniumand Phaeomoniella were isolated from the symptomatic young vines. Artificialinoculation confirmed the pathogenicity of these fungi. In addition, virulencevariability was observed among the isolates, with P. chlamydospora causing the largestlesions. The different species were associated with specific symptoms and/or host vineparts, especially in the roots and around the grafting areas. Several fungi associatedwith Petri disease and black foot were shown to be responsible of young vine decline.
|Numero di pagine||11|
|Stato di pubblicazione||Published - 2020|
All Science Journal Classification (ASJC) codes
- Agronomy and Crop Science
- Plant Science