jf0c06103_si_001.pdf (90.96 kB)
Download fileThree Types of Elicitors Induce Grapevine Resistance against Downy Mildew via Common and Specific Immune Responses
journal contribution
posted on 2021-02-02, 21:32 authored by Aleksandra Burdziej, Anthony Bellée, Enora Bodin, Josep Valls Fonayet, Noël Magnin, Anna Szakiel, Tristan Richard, Stéphanie Cluzet, Marie-France Corio-CostetThree
recognized plant defense stimulators (PDS), methyl jasmonate
(MeJA), benzothiadiazole (BTH) and phosphonates (PHOS), were sprayed
on grapevine Vitis vinifera cuttings
and conferred resistance to the biotrophic pathogen Plasmopara viticola. The effects on molecular defense-related
genes and polyphenol content (stilbenes and flavanols) were revealed
at 6 and 8 days post-elicitation. The transcript accumulation was
consistent with the signaling pathway specific to the elicitor, salicylic
acid for BTH, and jasmonic acid for MeJA, with some cross-talks. PHOS
tended to modulate the defense responses like BTH. Moreover, in response
to a downy mildew inoculation, the leaves pre-treated with PHOS and
BTH overproduced pterostilbene, and after MeJA treatment, piceids
and ε-viniferin, compared to uninoculated elicitor-treated leaves.
These results provide evidence of the different modes of action of
PDS and their role in sustainable viticulture.
History
Usage metrics
Categories
Keywords
8 days post-elicitationjasmonic acidgrapevine Vitis vinifera cuttingsBTH overproduced pterostilbeneDowny MildewPHOSplant defense stimulatorsbiotrophic pathogen Plasmopara viticolapolyphenol contentdowny mildew inoculationtranscript accumulationElicitors Induce Grapevine ResistanceSpecific Immune ResponsesPDSuninoculated elicitor-treateddefense responsesMeJA treatmentε- viniferin