» Articles » PMID: 18943955

Chitosan Oligomers and Copper Sulfate Induce Grapevine Defense Reactions and Resistance to Gray Mold and Downy Mildew

Overview
Journal Phytopathology
Specialty Biology
Date 2008 Oct 24
PMID 18943955
Citations 50
Authors
Affiliations
Soon will be listed here.
Abstract

ABSTRACT Chitosan (CHN), a deacetylated derivative of chitin, was shown to be efficient in promoting plant defense reactions. CHN oligomers of different molecular weight (MW) and degree of acetylation (DA) triggered an accumulation of phytoalexins, trans- and cis-resveratrol and their derivatives epsilon-viniferin and piceid, in grapevine leaves. Highest phytoalexin production was achieved within 48 h of incubation with CHN at 200 mug/ml with an MW of 1,500 and a DA of 20% (CHN1.5/20), while oligomers with greater MW were less efficient, indicating that a specific MW threshold could be required for phytoalexin response. Treatment of grapevine leaves by highly active CHN1.5/20 also led to marked induction of chitinase and beta-1,3-glucanase activities. CHN1.5/20 applied together with copper sulfate (CuSO(4)) strongly induced phytoalexin accumulation. CuSO(4) alone, especially at low concentrations also elicited a substantial production of phytoalexins in grapevine leaves. Evidence is also provided that CHN1.5/20 significantly reduced the infection of grapevine leaves by Botrytis cinerea and Plasmopara viticola, and in combination with CuSO(4) conferred protection against both pathogens.

Citing Articles

Effect of copy number and pH on copper resistance of enological strains.

Sica J, Bovo B, Nadai C, Carlot M, Giacomini A, Corich V Heliyon. 2024; 10(15):e34885.

PMID: 39144927 PMC: 11320302. DOI: 10.1016/j.heliyon.2024.e34885.


Increasing vineyard sustainability: innovating a targeted chitosan-derived biocontrol solution to induce grapevine resistance against downy and powdery mildews.

Brule D, Heloir M, Roudaire T, Villette J, Bonnet S, Pascal Y Front Plant Sci. 2024; 15:1360254.

PMID: 38384763 PMC: 10879612. DOI: 10.3389/fpls.2024.1360254.


Plant Resistance Inducers Affect Multiple Epidemiological Components of on Grapevine Leaves.

Taibi O, Salotti I, Rossi V Plants (Basel). 2023; 12(16).

PMID: 37631150 PMC: 10459891. DOI: 10.3390/plants12162938.


Impact of UV Irradiation on the Chitosan Bioactivity for Biopesticide Applications.

Meynaud S, Huet G, Brule D, Gardrat C, Poinssot B, Coma V Molecules. 2023; 28(13).

PMID: 37446616 PMC: 10343625. DOI: 10.3390/molecules28134954.


Chitosan oligomers (COS) trigger a coordinated biochemical response of lemongrass (Cymbopogon flexuosus) plants to palliate salinity-induced oxidative stress.

Mukarram M, Khan M, Kurjak D, Corpas F Sci Rep. 2023; 13(1):8636.

PMID: 37244976 PMC: 10224966. DOI: 10.1038/s41598-023-35931-w.