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Characterization of fungal pathogens associated with grapevine trunk diseases in Arkansas and Missouri

Fungal Diversity 2012年第1期52卷 169-189页

作者： Jose Ramon Urbez-Torres Francesca Peduto R.K.Striegler K.E.Urrea-Romero J.C.Rupe R.D.Cartwright W.D.Gubler Pacific Agri-Food Research Centre 4200 Highway 97Box 5000SummerlandBC V0H1Z0Canada Department of Plant Pathology University of California DavisDavisCA 95616USA Institute for Continental Climate Viticulture&Enology University of MissouriColumbiaMO 65211USA

Grapevine trunk diseases are a major concern to the wine-and table-grape industries worldwide,limiting both vineyard longevity and productivity.Field surveys conducted throughout the grape-growing regions of Arkansas and Missouri revealed the presence of three economically important grapevine trunk diseases including,Botryosphaeria canker,eutypa dieback and esca.Morphological studies along with multi-gene phylogenetical analyses confirmed the identification of 15 different fungal taxa associated with different vascular symptoms.These include Botryosphaeria dothidea,Diatrypella sp.,Diplodia seriata,Dothiorella americana,eutypa lata,Eutypella vitis,Lasiodiplodia missouriana,Lasiodiplodia viticola,Neofusicoccum ribis,Neofusicoccum vitifusiforme,Pestalotiopsis sp.,Pestalotiopsis uvicola,Phaeomoniella chlamydospora,Phomopsis viticola,Schyzophyllum commune,and Togninia minima.All of these represent new records on grapevines in Arkansas and Missouri.Dothiorella americana,L.missouriana and L.viticola are described as new species,and both N.ribis and N.vitifusiforme are first reported as grapevine pathogens in North America.Koch’s postulates confirmed the pathogenicity of all fungal species except S.commune in the interspecific hybrids Vignoles,Chambourcin,Norton,and Traminette.Lasiodiplodia spp.,N.ribis,and P.viticola were the most virulent fungi,while D.americana,E.vitis and N.vitifusiforme were considered to be weak pathogens.This research highlights the importance that grapevine trunk diseases have on grapevine health in growing regions where,due to different climatological conditions,interspecific hybrid cultivars are predominantly grown.

关键词： Botryosphaeriaceae Canker Diatrypaceae eutypa dieback Esca Grape hybrid Multi-gene phylogeny Phomopsis viticola Vitis vinifera

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First record of Eutypella vitis causing branch dieback on new host trees in Canada

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Studies in Fungi 2021年第1期6卷 71-77页

作者： Ilyukhin E Bulgakov T Markovskaja S Department of Biological Sciences Brock UniversitySt.CatharinesOntarioCanada Department of Plant Protection Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences2/28 Yana Fabritsiusa StreetSochi 354002Krasnodar regionRussia Laboratory of Mycology Nature Research CentreLT 08406VilniusLithuania

Eutypella vitis is reported for the first time on several new host trees viz.Fagus grandifolia,Fraxinus pennsylvanica and Syringa reticulata with associated branch dieback symptoms in the Niagara Region of Southern Ontario,Canada.Morphological characteristics and phylogenetic analyses of ITS sequence data confirmed the species identification.Eutypella vitis is known as a woody plant pathogen causing dieback of grapevines and other economically important fruit trees widely cultivated in Ontario.The fungus ability to infect several alternate new hosts can promote its faster and wider spread across vineyards and consequently increase a dieback hazard to viticulture in Canada.

关键词： Diatrypaceae eutypa dieback grapevines multi-host plant pathogen

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