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Int. J. Mol. Sci. 2017, 18(2), 393; doi:10.3390/ijms18020393

Defense Responses in Grapevine (cv. Mourvèdre) after Inoculation with the Botryosphaeria Dieback Pathogens Neofusicoccum parvum and Diplodia seriata and Their Relationship with Flowering

1
Structure Fédérative de Recherche (SFR) Condorcet-FR CNRS 3417, Université de Reims Champagne-Ardenne, Unité de Recherche Vignes et Vins de Champagne EA 4707, Laboratoire Stress, Défenses et Reproduction des Plantes, BP 1039, (Cedex 2), 51687 Reims, France
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Institut Français de la Vigne et du Vin Pôle Rhône-Méditerranée, 7 Avenue Cazeaux, 30230 Rodilhan, France
*
Author to whom correspondence should be addressed.
Academic Editor: Marcello Iriti
Received: 3 November 2016 / Revised: 7 February 2017 / Accepted: 8 February 2017 / Published: 13 February 2017
(This article belongs to the Section Biochemistry, Molecular and Cellular Biology)
View Full-Text   |   Download PDF [1498 KB, uploaded 16 February 2017]   |  

Abstract

As a result of the increasing economic impact of grapevine trunk diseases on viticulture worldwide, efficient and viable control strategies are urgently needed. However, understanding both plant-pathogen interactions and plant physiological changes related to these diseases is fundamental to such an achievement. In this study, we analyzed the effect of inoculation with the Botryosphaeria dieback fungal agents, Neofusicoccum parvum and Diplodia seriata, with and without inflorescence removal at the onset of G stage (separated clusters), I stage (flowering) and M stage (veraison). A measure of lesion size and real-time reverse-transcription polymerase chain reaction-based analysis were carried out. The results clearly show the importance of inflorescences in the development of lesions associated with Botryosphaeria dieback pathogens inoculated on green stems of adult vines, especially at the onset of flowering. At flowering, the biggest necroses were observed with the inflorescences present, as well as an activation of the studied defense responses. Thus, an ineffective response to the pathogen could be consistent with a possible metabolic reprogramming linked to the host phenophase. View Full-Text
Keywords: Botryosphaeria dieback; Neofusicoccum parvum; Diplodia seriata; defense responses; flowering Botryosphaeria dieback; Neofusicoccum parvum; Diplodia seriata; defense responses; flowering
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Spagnolo, A.; Mondello, V.; Larignon, P.; Villaume, S.; Rabenoelina, F.; Clément, C.; Fontaine, F. Defense Responses in Grapevine (cv. Mourvèdre) after Inoculation with the Botryosphaeria Dieback Pathogens Neofusicoccum parvum and Diplodia seriata and Their Relationship with Flowering. Int. J. Mol. Sci. 2017, 18, 393.

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