Search results for " vinifera"

Identification of the VvFLS2 grapevine flagellin receptor by a functional genomics strategy

2013

National audience; Grapevine (Vitis vinifera) is a crop of high agronomic interest subject to many destructive diseases. Pattern recognition receptors (PRRs) mediate detection of potential pathogens via the perception of pathogen associated molecular patterns (PAMPs), which is important for plant disease resistance. A well studied PRR is the Arabidopsis leucine-rich repeat receptor kinase FLS2 that recognizes bacterial flagellin (or its minimal motif flg22). Flagellin perception plays an important role in restricting bacterial invasion into plant leaves. Until now, functional FLS2 orthologues have been characterized in Nicotiana benthamiana, rice and tomato. Despite its economical importanc…

Induced resistance as a strategy for vineyard protection

2012

National audience; As most grown grapevine Vitis vinifera varieties are susceptible to diseases such as downy and powdery mildews, numerous treatments are required to ensure a satisfactory yield and harvest quality. However, the use of phytochemical fungicides has serious drawbacks: some of them are potentially harmful for the environment and human health and contribute to the selection of resistant pathogen strains. Nowadays, in an objective of sustainable viticulture, there is increasing societal request, political incitation and winegrower’s awareness to reduce the use of pesticides. For these reasons, alternative strategies of protection are under research. In our laboratory, we are stu…

Comment stimuler l’immunité de la vigne avec des éliciteurs

2013

Phenological model performance to warmer conditions: application to Pinot noir in Burgundy.

2014

<p style="text-align: justify;"><strong>Aim</strong>: The current work aims to assess the performance of two phenological models - a linear model (<em>Grapevine Flowering</em> <em>Véraison</em> model, <em>GFV</em>) and a curvilinear model (<em>Wang and</em> <em>Engel</em> model, <em>WE</em>) - to warmer temperature conditions for the grapevine variety Pinot noir in Burgundy.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Simulations using historical data from the 1973-2005 period were similar between models and consistent with observations. To mimic pot…

: J. Sci. Food Agric.

2017

Background: The measurement of carbon isotopic discrimination in grape sugars at harvest (δ13 C) is an integrated assessment of water status during ripening. It is an efficient alternative to assess variability in the field and discriminate between management zones in precision viticulture, but further work is needed to completely understand the signal.; Results: This work, spanning over 3 years, performed in a hillslope toposequence in Burgundy, delineates the relationships between main soil properties (gravel amount, slope, texture) and the grapevine water status assessed by δ13 C. The highest δ13 C, indicating most severe water deficit, was recorded in gravelly soils on steep slopes. The…

Récepteurs de l'immunité chez les plantes

2013

Etude du système de perception des chito--oligosaccharides chez la vigne et rôle dans l'immunité.

2014

Rapport de stage Master II R SPE IPM; Master

Evolution de la résistance basale à Botrytis cinerea au cours de la maturation de la baie

2013

National audience; Mature grapevine berries at the harvesting stage (MB) are very susceptible to the grey mould fungus Botrytis cinerea while veraison berries (VB) are not. We conducted simultaneous microscopic and transcriptomic analyses of the pathogen and the host to investigate the infectious process developed by B. cinerea on MB versus VB, and the plant defence mechanisms deployed to stop the fungus development. On the pathogen side, our genome-wide transcriptomic data revealed that B. cinerea genes up-regulated during infection of MB are enriched in functional categories related to necrotrophy such as degradation of plant cell wall, proteolysis, membrane transport, oxidative stress re…

Characterization of the role of flagellin in the innate immunity triggered by the endophytic pgpr burkholderia phytofirmans in arabidopsis and grapev…

2014

International audience

Dynamiques spatio-temporelles de la vigne (Vitis vinifera) au cours de l’Holocène en France d’après les enregistrements archéobotaniques (graines et …

2021

International audience; Le vin joue un rôle économique et culturel capital depuis l’âge du Fer en France. Dès cette époque, la viticulture s’implante dans le Midi méditerranéen puis va progressivement se diffuser dans la zone tempérée. L’archéologie a bien montré à quel point le Haut-Empire romain représente une étape clé dans cette diffusion (Poux et al. 2011). Cependant, les différents marqueurs à disposition de l’archéologie culturelle et spatiale (aménagements, structures, mobiliers) sont généralement limités à des fenêtres chrono-géographiques particulières. Changeant en fonction du contexte technique, culturel et environnemental, aucun ne permet véritablement de suivre l’expansion de …