A Plant Extract Acts Both as a Resistance Inducer and an Oomycide Against Grapevine Downy Mildew
| Autor: | Tristan Richard, Marie-Claire Héloir, Ambrine Bougaud, Jonathan Negrel, Sophie Trouvelot, Marielle Adrian, Lucile Jacquens, Agnès Klinguer, Annick Chiltz, Stéphanie Cluzet, Yuko Krzyzaniak, Josep Valls |
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| Přispěvatelé: | Agroécologie [Dijon], Université de Bourgogne (UB)-Institut National de la Recherche Agronomique (INRA)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Unité de Recherche Oenologie [Villenave d'Ornon], Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV) |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine plant protection oomycide Zoospore [SDV]Life Sciences [q-bio] Biological pest control Plant Science lcsh:Plant culture Resveratrol 01 natural sciences induced resistance Plasmopara viticola 03 medical and health sciences chemistry.chemical_compound [SDV.IDA]Life Sciences [q-bio]/Food engineering [SDV.BV]Life Sciences [q-bio]/Vegetal Biology [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering lcsh:SB1-1110 Inducer biocontrol Original Research Piceid elicitor biology food and beverages biology.organism_classification Elicitor Horticulture 030104 developmental biology chemistry Vitis vinifera [SDE]Environmental Sciences Downy mildew 010606 plant biology & botany |
| Zdroj: | Frontiers in Plant Science, Vol 9 (2018) Frontiers in Plant Science Frontiers in Plant Science (9), 1-14. (2018) Frontiers in Plant Science, Frontiers, 2018, 9, pp.1-14. ⟨10.3389/fpls.2018.01085⟩ |
| ISSN: | 1664-462X |
| DOI: | 10.3389/fpls.2018.01085 |
| Popis: | International audience; Protecting vineyards from cryptogamic diseases such as downy mildew, caused by Plasmopara viticola, generally requires a massive use of phytochemicals. However, the issues on unintentional secondary effects on environment and human health, and the occurrence of P. viticola resistant strains, are leading to the development of alternative strategies, such as the use of biocontrol products. In this paper, we evidenced the ability of a plant extract to protect grapevine from P. viticola. Further experiments carried out both on cell suspensions and on plants revealed that plant extract activates typical defense-related responses such as the production of H2O2, the up-regulation of genes encoding pathogenesis-related proteins and stilbene synthase, as well as the accumulation of resveratrol or its derivative piceid. We also brought to light a strong direct effect of PE on the release and motility of P. viticola zoospores. Furthermore, we found out that PE application left dried residues on leaf surface, impairing zoospores to reach stomata. Altogether, our results highlight the different modes of action of a new biocontrol product able to protect grapevine against downy mildew. |
| Databáze: | OpenAIRE |
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