New salicylic acid and pyroglutamic acid conjugated derivatives confer protection to bread wheat against Zymoseptoria tritici.

Autor: Mejri S; Institut Supérieur d'Agriculture (ISA), Yncréa Hauts-de-France, EA 7394-ICV Institut Charles Viollette, Lille, France., Siah A; Institut Supérieur d'Agriculture (ISA), Yncréa Hauts-de-France, EA 7394-ICV Institut Charles Viollette, Lille, France., Abuhaie CM; Inserm U995, LIRIC, Université de Lille, CHRU de Lille, Faculté de médecine - Pôle recherche, Lille, France.; Hautes Etudes d'Ingénieur (HEI), Yncréa Hauts-de-France, UCLille, Laboratoire de chimie durable et santé, Lille, France.; Faculty of Chemistry, 'Al. I. Cuza' University of Iasi, Iasi, Romania., Halama P; Institut Supérieur d'Agriculture (ISA), Yncréa Hauts-de-France, EA 7394-ICV Institut Charles Viollette, Lille, France., Magnin-Robert M; Univ. Littoral Côte d'Opale, UCEIV-EA 4492, Unité de Chimie Environnementale et Interactions sur le Vivant, Calais, France., Randoux B; Univ. Littoral Côte d'Opale, UCEIV-EA 4492, Unité de Chimie Environnementale et Interactions sur le Vivant, Calais, France., Reignault P; Univ. Littoral Côte d'Opale, UCEIV-EA 4492, Unité de Chimie Environnementale et Interactions sur le Vivant, Calais, France., Rigo B; Inserm U995, LIRIC, Université de Lille, CHRU de Lille, Faculté de médecine - Pôle recherche, Lille, France.; Hautes Etudes d'Ingénieur (HEI), Yncréa Hauts-de-France, UCLille, Laboratoire de chimie durable et santé, Lille, France., Ghinet A; Inserm U995, LIRIC, Université de Lille, CHRU de Lille, Faculté de médecine - Pôle recherche, Lille, France.; Hautes Etudes d'Ingénieur (HEI), Yncréa Hauts-de-France, UCLille, Laboratoire de chimie durable et santé, Lille, France.; Faculty of Chemistry, 'Al. I. Cuza' University of Iasi, Iasi, Romania.
Jazyk: angličtina
Zdroj: Journal of the science of food and agriculture [J Sci Food Agric] 2019 Mar 15; Vol. 99 (4), pp. 1780-1786. Date of Electronic Publication: 2018 Oct 30.
DOI: 10.1002/jsfa.9370
Abstrakt: Background: To promote sustainable agriculture and healthy food, research that contributes towards a new generation of eco-friendly phytosanitary compounds is increasingly encouraged. The plant hormone salicylic acid (SA) is known for its ability to induce resistance in plants against a wide range of pathogens, whereas pyroglutamic acid (PGA), a constrained analogue of γ-aminobutyric acid, has never been studied in the context of plant protection.
Results: The present study investigated for the first time the protection efficacy of SA and PGA and five new conjugated derivatives against Zymoseptoria tritici, the main pathogen in wheat crops. SA and four derivatives showed significant disease severity reductions in planta (up to 49%). In vitro assays revealed that some molecules, including SA, displayed a small direct antifungal activity, whereas others, such as PGA, showed no effect. This finding suggests that, especially for molecules without any direct activity, the mode of action relies mainly on the induction of plant resistance.
Conclusion: Further investigations are needed to identify the defence pathways involved in plant resistance mechanisms elicited or primed by the molecules. The manufacture of these products was easily achieved on a scale of tens of grams of raw materials, and is easily scalable. The synthetic pathway is simple, short and inexpensive. For all of these reasons, the production of the target molecules is attractive for producers, whereas the prospect of a generation of non-polluting compounds with lasting efficiency against Z. tritici in wheat comes at a key moment for the sustainability of agriculture. © 2018 Society of Chemical Industry.
(© 2018 Society of Chemical Industry.)
Databáze: MEDLINE
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