Document Detail

Effect of ochratoxin A-producing Aspergilli on stilbenic phytoalexin synthesis in grapes.
MedLine Citation:
PMID:  14518937     Owner:  NLM     Status:  MEDLINE    
Berries of Vitis vinifera L. cv. Barbera were infected, at veraison and during ripening, by a conidial suspension of A. japonicus, A. ochraceus, A. fumigatus and two isolates of A. carbonarius to control ochratoxin A production and stilbene induced synthesis. The experimental design provided also for intact and punctured berries and incubation temperature of 25 degrees C and 30 degrees C. All the tested fungi, except A. fumigatus, significantly increased trans-resveratrol synthesis over the control, while trans-piceid was not affected; only A. ochraceus significantly elicited the berries to synthesize piceatannol. The two isolates of A. carbonarius produced higher amounts of ochratoxin A than did the other fungi. A positive correlation between ochratoxin A and trans-resveratrol synthesis occurred. trans-Resveratrol and piceatannol showed fungicidal activity against A. carbonarius, being able to completely inhibit fungal growth at a concentration of 300 microg/g and 20 microg/g, respectively.
Luigi Bavaresco; Silvia Vezzulli; Paola Battilani; Paola Giorni; Amedeo Pietri; Terenzio Bertuzzi
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  51     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2003 Oct 
Date Detail:
Created Date:  2003-10-01     Completed Date:  2003-11-06     Revised Date:  2013-06-03    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6151-7     Citation Subset:  IM    
Istituto di Frutti-Viticoltura, Università Cattolica del Sacro Cuore, 29100 Piacenza, Italy.
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MeSH Terms
Aspergillus / drug effects,  growth & development*,  metabolism
Fruit / metabolism,  microbiology*
Ochratoxins / biosynthesis*
Plant Extracts / biosynthesis*
Stilbenes / metabolism*,  pharmacology
Vitis / metabolism,  microbiology*
Reg. No./Substance:
0/Ochratoxins; 0/Plant Extracts; 0/Sesquiterpenes; 0/Stilbenes; 0/Terpenes; 1779SX6LUY/ochratoxin A; 37297-20-4/phytoalexins; 4339-71-3/3,3',4,5'-tetrahydroxystilbene; Q369O8926L/resveratrol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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