Expression analysis of defence-related genes in grapevine leaves after inoculation with a host and a non-host pathogen

Plant Physiology and Biochemistry : PPB
A Kortekamp

Abstract

The expression of PR protein encoding genes and genes involved in the phenylpropanoid metabolism was analysed on grapevine leaves of susceptible and resistant cvs. in response to inoculation with the host-pathogen Plasmopara viticola and the non-host pathogen Pseudoperonospora cubensis, the downy mildew pathogen of cucumber. These experiments were conducted to elucidate whether or not grapevine plants susceptible to downy mildew exhibit an identical defence response after inoculation with the non-host pathogen. Expression analysis of defence-related genes revealed marked differences between the susceptible cultivar "Riesling" (Vitis vinifera) and the resistant cultivar "Gloire de Montpellier" (Vitis riparia). Whereas some genes seem to be expressed constitutively in "Gloire" or induced after an inoculation with both pathogens, expression of defence-related genes in Riesling was influenced mainly after inoculation with the non-host pathogen: PR-2, PR-3, PR-4, a PGIP gene, and especially genes encoding enzymes involved in anthocyanin biosynthesis (DFR, F3H, LDOX) were affected. Therefore, the occurrence of the respective products (flavans and other phenolics) in inoculated leaves was investigated with appropriate histological sta...Continue Reading

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Citations

Mar 16, 2011·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Paule BlasiDidier Merdinoglu
Feb 28, 2013·Oecologia·Jonathan E HickmanManuel T Lerdau
Jun 2, 2011·Journal of Agricultural and Food Chemistry·Lucia Landi, Gianfranco Romanazzi
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Feb 5, 2016·Journal of Experimental Botany·Dong DuanPeter Nick
Feb 9, 2007·The New Phytologist·Mathilde AllègreAlain Pugin
Jun 16, 2012·Plant Physiology and Biochemistry : PPB·Hatem BoubakriIsabelle Soustre-Gacougnolle
Nov 29, 2011·Journal of Proteomics·Alberto MilliAnnalisa Polverari
Nov 9, 2007·Plant Physiology and Biochemistry : PPB·Julie ChongBernard Walter
Apr 16, 2015·Journal of Experimental Botany·Dong DuanPeter Nick
May 29, 2016·Journal of Proteomics·Maria Carolina Andrade Nascimento-GavioliMiguel Pedro Guerra

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