Studies on Esca and Petri Diseases in Grapevine Nurseries and Vineyards in Aegean Region

Authors : Dilek POYRAZ, Ersin ONOĞUR

Pages : 13-27

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Publication Date : 2014-05-28

Article Type : Research Paper

Abstract :This study was carried out between the years of 2009- 2012 in order to determine fungal agents that cause Esca and Petri diseases in grapevine nurseries and in vineyards of Manisa, Denizli and Izmir provinces of Aegean Region. It was planned to investigate the role and share of pathogens in complex disease symptoms. The trunk, cane and leaf samples were taken from the grapevine nurseries, young and older vineyards. The isolations from nurseries revealed the presence of Phaeoacremonium aleophilum insert ignore into journalissuearticles values(Pm);and Phaeomoniella chlamydospora insert ignore into journalissuearticles values(Pcl); as causal agents of Petri disease, based on their morphological characteristics. The samples from young vineyards were infected primarily with Pm, Pcl and secondly with Fomitiporia mediterrenea insert ignore into journalissuearticles values(Fom);, known as Esca pathogen, whereas the isolations from older vineyards indicated primarily the presence of Fom followed with Pm and Pcl. In conclusion, the presence of the pathogens Pmand Pcl causing Petri disease in the samples taken from grapevine nurseries was revealed and it was also found that these pathogens were dominant in the samples taken from young vineyards accompanied with Fom, causing Esca symptoms. The vines in the older insert ignore into journalissuearticles values(10-25years old); vineyards were however infected mainly with Fom and additionally with Pmand Pcl.
Keywords : Grapevine, Petri disease, Esca, Phaeoacremoniumaleophilum, Phaeomoniella chlamydospora, Fomitiporia mediterrenea