Document Detail

Modified cyclodextrins are chemically defined glucan inducers of defense responses in grapevine cell cultures.
MedLine Citation:
PMID:  16390179     Owner:  NLM     Status:  MEDLINE    
In grapevine (Vitis vinifera L.), defense responses after microbial infection or treatment with elicitors involve accumulation of phytoalexins, oxidative burst, and the synthesis of pathogenesis-related proteins. Oligosaccharide fractions from fungal or algal cell walls efficiently induce the defense responses, but a detailed analysis of the elicitor-plant cell surface interaction at the molecular level is precluded by the lack of chemically pure oligosaccharide elicitors. A grapevine liquid cell culture system was used to examine the properties of cyclodextrins (CDs) as inducers of defense responses. This work shows that the chemically pure heptakis(2,6-di-O-methyl)-betaCD caused a dramatic extracellular accumulation of the phytoalexin resveratrol and changes in peroxidase activity and isoenzymatic pattern. Other modified CDs tested on several grapevine cell lines resulted in different eliciting capacities of CDs and different sensibilities of the cell lines. The spent medium of elicited cultures was shown to disturb Botrytis cinerea growth in a plate assay.
Roque Bru; Susana Sellés; Juan Casado-Vela; Sarai Belchí-Navarro; Maria Angeles Pedreño
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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:  54     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2006-01-04     Completed Date:  2006-02-22     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:  65-71     Citation Subset:  IM    
Departamento de Agroquímica y Bioquímica, Facultad de Ciencias, Universidad de Alicante, Apartado 99, E-03080 Alicante, Spain.
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MeSH Terms
Botrytis / drug effects,  growth & development
Cells, Cultured
Cyclodextrins / pharmacology*
Isoenzymes / metabolism
Peroxidase / metabolism
Plant Extracts / biosynthesis*
Plant Stems / cytology,  metabolism
Stilbenes / metabolism
Vitis / cytology*,  metabolism,  microbiology
beta-Cyclodextrins / pharmacology
Reg. No./Substance:
0/Cyclodextrins; 0/Isoenzymes; 0/Plant Extracts; 0/Sesquiterpenes; 0/Stilbenes; 0/Terpenes; 0/beta-Cyclodextrins; 37297-20-4/phytoalexins; 51166-71-3/heptakis(2,6-O-dimethyl)beta-cyclodextrin; EC; Q369O8926L/resveratrol

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

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