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Molecules

Title:		VOCs Are Relevant Biomarkers of Elicitor-Induced Defences in Grapevine
Author(s):		Lemaitre-Guillier C; Dufresne C; Chartier A; Cluzet S; Valls J; Jacquens L; Douillet A; Aveline N; Adrian M; Daire X;
Address:		"Agroecologie, AgroSup Dijon, CNRS, INRAE, Univ. Bourgogne, Univ. Bourgogne Franche-Comte, 21000 Dijon, France. Institut de Chimie Organique et Analytique, ICOA, UMR 7311, Universite d'Orleans, rue de Chartres, BP 6759, CEDEX 2, 45067 Orleans, France. Equipe Molecules d'Interet Biologique, ISVV, Unite de Recherche OEnologie, EA 4577, USC 1366 INRAE, Faculte des Sciences Pharmaceutiques, Universite de Bordeaux, CEDEX, 33882 Villenave d'Orno, France. Institut Francais de la Vigne et du Vin (IFV), 33290 Blanquefort, France"
Journal Title:		Molecules
Year:		2021
Volume:		20210713
Issue:		14
Page Number:		-
DOI:		10.3390/molecules26144258
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"Grapevine is susceptible to fungal diseases generally controlled by numerous chemical fungicides. Elicitors of plant defence are a way of reducing the use of these chemicals, but still provide inconsistent efficiency. Easy-to-analyse markers of grapevine responses to elicitors are needed to determine the best conditions for their efficiency and position them in protection strategies. We previously reported that the elicitor sulphated laminarin induced the emission of volatile organic compounds (VOCs) by grapevine leaves. The present study was conducted to characterise and compare VOC emissions in response to other elicitors. Bastid((R)) was first used to test the conditions of VOC collection and analysis. Using SBSE-GC-MS, we detected several VOCs, including the sesquiterpene alpha-farnesene, in a time-dependent manner. This was correlated with the induction of farnesene synthase gene expression, in parallel with stilbene synthesis (another defence response), and associated to resistance against downy mildew. The other elicitors (Redeli((R)), Romeo((R)), Bion((R)), chitosan, and an oligogalacturonide) induced VOC emission, but with qualitative and quantitative differences. VOC emission thus constitutes a response of grapevine to elicitors of various chemical structures. Therefore, VOC analysis is relevant for studying the impact of environmental factors on grapevine defence responses and optimising the performance of elicitors in vineyards"
Keywords:		"Fungicides, Industrial/analysis Gas Chromatography-Mass Spectrometry Plant Diseases/*microbiology Plant Leaves/chemistry/*microbiology Sesquiterpenes/analysis Vitis/chemistry/*microbiology Volatile Organic Compounds/*analysis elicitor grapevine plant defe;"
Notes:		"MedlineLemaitre-Guillier, Christelle Dufresne, Christelle Chartier, Agnes Cluzet, Stephanie Valls, Josep Jacquens, Lucile Douillet, Antonin Aveline, Nicolas Adrian, Marielle Daire, Xavier eng CASDAR CODEVI/Ministere de l'Agriculture, de l'Agroalimentaire et de la Foret/ ANR-11- INBS-0010 project/Conseil Regional de Bourgogne Franche Comte (France), the Bordeaux Metabolome Facility and MetaboHUB./ Switzerland 2021/07/25 Molecules. 2021 Jul 13; 26(14):4258. doi: 10.3390/molecules26144258"