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Resveratrol production as a part of the hypersensitive‐like response of grapevine cells to an elicitor from Trichoderma viride
Author(s) -
CALDERÓN ANTONIO A.,
ZAPATA JOSE M.,
MUÑOZ ROMUALDO,
PEDREÑO MARÍA A.,
BARCELÓ A. ROS
Publication year - 1993
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1993.tb03836.x
Subject(s) - elicitor , botrytis cinerea , phytoalexin , trichoderma viride , hypersensitive response , resveratrol , pathogenesis related protein , biology , botrytis , pectinase , microbiology and biotechnology , botany , chemistry , biochemistry , enzyme , programmed cell death , solanaceae , apoptosis , gene
SUMMARY Suspension cell cultures of grapevine ( Vitis vinifera , cv. Monastrell) treated with an elicitor (cellulase, Onozuka R‐10) from Trichoderma viride showed a hypersensitive‐like response. This was characterized by cell plasmolysis and was accompanied by localized cell death, which was concomitant with cell culture browning, itself probably due to an activation of oxidative phenolic metabolism driven by a large increase in endogenous levels of H 2 O 2 . In addition to these responses, the treatment of cell cultures with the elicitor produced an increase in amounts of benzoic acid and of resveratrol, the latter a potent phytoalexin of grapevines. This hypersensitive‐like response was specific since none of the above responses was obtained with other cell wall‐degrading enzymes from several sources, or with inocula of either mycelial extracts or culture filtrates of Botrytis cinerea. These results are discussed in the light of a disease‐resistance reaction induced in grapevine cells by a product of T. viride , a fungal agent characterized by its effective biocontrol of Botrytis cinerea , the causal agent of grey mould in grapevines.