Chitosan oligomers and copper sulfate induce grapevine defense reactions and resistance to gray mold and downy mildew.

@article{Aziz2006ChitosanOA,
  title={Chitosan oligomers and copper sulfate induce grapevine defense reactions and resistance to gray mold and downy mildew.},
  author={Aziz Aziz and Patricia Trotel-Aziz and Laurent Dhuicq and Philippe Jeandet and Michel Couderchet and Guy Vernet},
  journal={Phytopathology},
  year={2006},
  volume={96 11},
  pages={1188-94}
}
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… CONTINUE READING

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