Samples of grape clusters were collected throughout the Italian territory from Piedmont to Sicily in order to investigate their fungal community with particular reference to toxigenic species. Despite the wide variations observed in the contamination levels, the average number of CFU/g of fresh weight was higher in samples collected in Southern and Central Italy, while fungal communities detected in Northern regions and in Sardinia were generally more reduced. Black Aspergilli and in particular A. carbonarius, were isolated in all the sampling areas, but were more frequent and abundant in Southern Italy. A. ochraceus, even if not frequently isolated, was present all over the Itailan contry as well as A. flavus. Several Aspergillus species were seldom detected in different areas. The most commnly isolated Penicillium species, particularly frequent in Northern Italy, were P. brevicompactum, P. citrinum and P. expansum. Few strains of A. carbonarius isolated from all the sampled regions, except from Sardinia, produced OTA in vitro. Some isolates of other species belonging to the Nigri group accumulated OTA in vitro. OTA was produced by almost all the A. ochraceus isolates and synthetized also by some Eurotium strains, A. terreus, P. aurantiogriseum, P. expansum and P. variabile. OTA, not found in samples collected in Northern Italy, contaminated very few samples, coming from Central Italy, Sicily and Sardinia. More than 70 % of samples collected in Southern italy contained variable quantity of OTA.

Dynamics of Aspergillus and Penicillium species in different Italian vineyards / M. Borgo, S. Burruano, F. Faretra, S. Serra, A. Vercesi - In: Ochratoxin A in grapes and wine: prevention and control, 20th-21st October 2005, Marsala (TP) - ABSTRACTS / Università Cattolica del Sacro Cuore, Facoltà di Agraria, Piacenza, CAVIRO, ISPA. - [s.l] : Università Cattolica del Sacro Cuore, Facoltà di Agraria, Piacenza, 2005 Oct. - pp. 59-59 (( convegno Ochratoxin A in grapes and wine: prevention and control tenutosi a Marsala (TP), Sicilia nel 2005.

Dynamics of Aspergillus and Penicillium species in different Italian vineyards

A. Vercesi
Ultimo
2005

Abstract

Samples of grape clusters were collected throughout the Italian territory from Piedmont to Sicily in order to investigate their fungal community with particular reference to toxigenic species. Despite the wide variations observed in the contamination levels, the average number of CFU/g of fresh weight was higher in samples collected in Southern and Central Italy, while fungal communities detected in Northern regions and in Sardinia were generally more reduced. Black Aspergilli and in particular A. carbonarius, were isolated in all the sampling areas, but were more frequent and abundant in Southern Italy. A. ochraceus, even if not frequently isolated, was present all over the Itailan contry as well as A. flavus. Several Aspergillus species were seldom detected in different areas. The most commnly isolated Penicillium species, particularly frequent in Northern Italy, were P. brevicompactum, P. citrinum and P. expansum. Few strains of A. carbonarius isolated from all the sampled regions, except from Sardinia, produced OTA in vitro. Some isolates of other species belonging to the Nigri group accumulated OTA in vitro. OTA was produced by almost all the A. ochraceus isolates and synthetized also by some Eurotium strains, A. terreus, P. aurantiogriseum, P. expansum and P. variabile. OTA, not found in samples collected in Northern Italy, contaminated very few samples, coming from Central Italy, Sicily and Sardinia. More than 70 % of samples collected in Southern italy contained variable quantity of OTA.
Aspergillus, Penicillium, OTA
Settore AGR/12 - Patologia Vegetale
Facoltà di Agraria dell'Università del Sacro Cuore di Piacenza
CAVIRO
ISPA
Book Part (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/13457
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