Observations on the Fungi Associated with Esca and on Spatial Distribution of Esca-Symptomatic Plants in Apulian (Italy) Vineyards

The paper reports the results of observations on the fungi associated with deteriorated wood of esca affected vines and the spatial distribution of diseased plants in 21 vineyards located in Apulia (Southern Italy). Examination of over 43,000 plants revealed that the incidence of plants showing symp...

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Bibliographic Details
Published in:Phytopathologia mediterranea 2000-04, Vol.39 (1), p.206-210
Main Authors: Pollastro, Stefania, Dongiovanni, Crescenza, Abbatecola, Angela, Faretra, Francesco
Format: Article
Language:ita ; eng
Subjects:
APULIA
BOTRYOSPHAERIA
BROWNING
BRUNISSEMENT
CARIE DU BOIS
DECOLORACION
DECOLORATION
DISCOLORATION
ENFERMEDADES FUNGOSAS
EPIDEMIOLOGIA
EPIDEMIOLOGIE
EPIDEMIOLOGY
EUTYPA
FUNGAL DISEASES
GRAPEVINES
IDENTIFICACION
IDENTIFICATION
IDENTIFICAZIONE
IMBRUNIMENTO
MALADIE FONGIQUE
MALATTIE FUNGINE
MARCIUME DEL LEGNO
OSCURECIMIENTO
PHELLINUS
POUILLES
PUDRICION DE LA MADERA
PUGLIA
Research Papers
SCOLORAMENTO
SINTOMAS
SINTOMI
SYMPTOME
SYMPTOMS
VID
VIGNE
VIGNETI
VIGNOBLE
VINA
VINEYARDS
VITE
VITIS VINIFERA
WOOD DECAY
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Summary:The paper reports the results of observations on the fungi associated with deteriorated wood of esca affected vines and the spatial distribution of diseased plants in 21 vineyards located in Apulia (Southern Italy). Examination of over 43,000 plants revealed that the incidence of plants showing symptoms of esca was 12% (5-18%) in vineyards younger than 10 years and 22% (4-54%) in older ones. The most common deteriorations of the wood were a white rot of soft consistency and a dark brown discoloration of a hard consistency including longitudinal black streaks. Mycological analysis was carried out on 554 diseased vines from 5 vineyards. Phellinus sp. was frequently isolated from white rot, whereas Phaeoacremonium spp., Botryosphaeria spp. and Eutypa lata were more often isolated from dark brown tissues. Preliminary observations of maps of plants with symptoms of esca seem to indicate a tendency to aggregation, especially in young vineyards [L'articolo riporta i risultati di osservazioni sui funghi associati con il legno deteriorato di viti affette da mal dell'esca e la distribuzione spaziale delle piante ammalate in 21 vigneti localizzati in Puglia (Italia Meridionale). L'esame di piu' di 43.000 piante ha posto in evidenza che l'incidenza delle piante con sintomi di mal dell'esca era del 12% (5-18%) in vigneti piu' giovani di 10 anni e del 22% (4-54%) in quelli piu' vecchi. Le alterazioni piu' comuni del legno erano un marciume bianco di consistenza soffice e uno scolorimento bruno scuro di consistenza notevole comprendente striature longitudinali nere. L'analisi micologica e' stata effettuata su 554 piante ammalate provenienti da 5 vigneti. Dal marciume bianco veniva isolato frequentemente Phellinus sp., mentre Phaeoacremonium spp., Botryosphaeria spp. ed Eutypa lata erano isolati piu' spesso dai tessuti bruno scuro. Osservazioni preliminari di mappe di piante con sintomi del mal dell'esca pare indicare una tendenza all'aggregazione, specialmente nei vigneti giovani]
ISSN:0031-9465
1593-2095
DOI:10.1400/57845