title: In vitro tolerance to Botrytis cinerea of grapevine 41B rootstock in transgenic plants expressing the stilbene synthase Vst1 gene under the control of a pathogen-inducible PR 10 promoter.
abstract: Resveratrol is a major phytoalexin in grapevine but its synthesis in response to phytopathogen attack decreases with grape berry ripening. A chimeric gene combining an alfalfa PR 10 promoter and Vst1 (Vitis stilbene synthase 1) gene was introduced into the genome of 41B rootstock. Transgenic plants were analysed for resveratrol production in leaves infected with Botrytis using an in vitro test. Among the 50 transgenic lines analysed, some exhibited a production lower than the non-transgenic control, but others accumulated resveratrol from 5-100-fold. Moreover, in the latter clones, symptoms were highly reduced in response to infection. These results were a good indication that the combination of a pathogen-inducible promoter and a defence gene may increase tolerance against fungi in grapevine. The efficacy of this approach should be further tested by experiments conducted in the vineyard.
authors: LVMH-Recherche: Moët et Chandon, 20 Avenue de Champagne, BP 140 51333 Epernay Cédex, France.
authors: P
authors: P
authors: Coutos-Thévenot
authors: B
authors: B
authors: Poinssot
authors: A
authors: A
authors: Bonomelli
authors: H
authors: H
authors: Yean
authors: C
authors: C
authors: Breda
authors: D
authors: D
authors: Buffard
authors: R
authors: R
authors: Esnault
authors: R
authors: R
authors: Hain
authors: M
authors: M
authors: Boulay
mesh_terms: D000217:Acyltransferases / Q000096:biosynthesis / Q000235:genetics*; D020171:Botrytis / Q000254:growth & development / Q000502:physiology*; D000455:Medicago sativa / Q000235:genetics; D010935:Plant Diseases / Q000382:microbiology*; D018515:Plant Leaves / Q000378:metabolism; D018517:Plant Roots / Q000382:microbiology; D030821:Plants, Genetically Modified; D010947:Plants, Toxic; D011401:Promoter Regions, Genetic; D011993:Recombinant Fusion Proteins / Q000235:genetics; D000077185:Resveratrol; D019685:Rosales / Q000235:genetics / Q000382:microbiology*; D013267:Stilbenes / Q000378:metabolism; D014026:Nicotiana / Q000235:genetics; D014466:Ultraviolet Rays
chemical_list: D011993:Recombinant Fusion Proteins; D013267:Stilbenes; D000217:Acyltransferases; C022674:stilbene synthase; D000077185:Resveratrol