A5091729924- Horticultural and Viticultural Research
- Plant Pathogens and Fungal Diseases
- Powdery Mildew Fungal Diseases
- Wheat and Barley Genetics and Pathology
- Fermentation and Sensory Analysis
- Plant Pathogens and Resistance
- Yeasts and Rust Fungi Studies
- Plant Physiology and Cultivation Studies
- Forest Insect Ecology and Management
- Berry genetics and cultivation research
- Agriculture, Plant Science, Crop Management
- Plant pathogens and resistance mechanisms
- Fungal Plant Pathogen Control
- Greenhouse Technology and Climate Control
- Plant Virus Research Studies
- Insect-Plant Interactions and Control
- Plant-Microbe Interactions and Immunity
- Agriculture and Rural Development Research
- Plant and Fungal Interactions Research
- Banana Cultivation and Research
- Plant Parasitism and Resistance
- Plant and animal studies
- Leaf Properties and Growth Measurement
- Mathematical and Theoretical Epidemiology and Ecology Models
- Fungal Biology and Applications
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2008-2024
Santé et Agroécologie du Vignoble
2011-2024
Université de Bordeaux
2012-2021
École Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine
2020-2021
Institut National de la Recherche Agronomique
2006-2017
Institut National Polytechnique de Toulouse
1998-2012
Unité de Recherche Œnologie
1998-2012
Institut National des Sciences Appliquées de Lyon
2002
Aim: This paper aimed to address the relationship between grapevine disease, pest occurrences and climate. The extremely large extension of viticulture worldwide offers possibility evaluate impacts climate variability on many aspects grape growing system. For this, we initiated a global survey retrieve most important diseases pests in regions identify risk exposure as function climate.Methods results: Based answer respondent about main reported diseases/pests their region, severity index was...
The effects of powdery mildew ( Uncinula necator ) on grape yield, juice and wine quality were quantified for cultivar Cabernet Sauvignon (CSa) in 1997 1999, blanc (Sa) 1999. Analyses carried out batches healthy berries to which known percentages (0–50%) diseased added, natural clusters that classified into four visual classes from low (C 1 high 4 disease severity. CSa showed an average weight reduction 12% (1997) 20% (1999). direct consequence a higher percentage smaller, was yield....
Powdery mildew due to the fungus Uncinula necator is an important disease for vineyard. The development of at surface berries leads occurrence a very characteristic and sometimes intense mushroom-type odor cited as default grapes quality. Gas chromatography/olfactometry, gas chromatography, multidimensional chromatogaphy/mass spectrometry techniques were used investigate most odorants diseased by powdery mildew. Among 22 detected, strongly odorant compounds identified or tentatively in...
An epidemiological model simulating the growth of a single grapevine stock coupled to dispersal and disease dynamics airborne conidia powdery mildew pathogen Erysiphe necator was developed. The input variables were either climatic (temperature, wind speed direction) or related (location onset primary infection). environmental dictated plant spread (latent period, infection, lesion growth, conidial spore production release). Input parameters characterized crop system, conditions...
To reduce the use of pesticides, innovative studies have been developed to introduce plant as centre crop protection system. The aim this paper is explain how architectural traits plants and canopies induce a more or less severe epidemic they may be modified in order disease development. In particular, it focuses on three key questions: i) which processes linked epidemics can influenced by architecture ii) characterized relative these modes action, iii) effects explored exploited? roles...
This study was designed to assess the reliability of grapevine leaf bioassays for predicting disease resistance on fruit in field. The efficacy various quantitative trait loci (QTLs) conferring downy and powdery mildew evaluated a 2‐year field experiment mildew. genes studied were inherited from Muscadinia rotundifolia ( Rpv1 Run1 ) American Vitis species through cv. Regent (QTLRgP QTLRgD). In bioassays, genotypes carrying blocked development at early stages. Genotypes combining with QTLRgP...
<p class="Abstract"><strong>Aim:</strong> This paper aimed to address the relationship between grapevine disease, pest occurrences and climate. The extremely large extension of viticulture worldwide offers possibility evaluate impacts climate variability on many aspects grape growing system. For this, we initiated a global survey retrieve most important diseases pests in regions identify risk exposure as function climate.</p><p...
The Global Plant Health Assessment (GPHA) is a collective, volunteer-based effort to assemble expert opinions on plant health and disease impacts ecosystem services based published scientific evidence. GPHA considers range of forest, agricultural, urban systems worldwide. These are referred as (Ecoregion × System), i.e., selected case examples involving keystone plants in given parts the world. focuses infectious diseases pathogens, but encompasses abiotic (e.g., temperature, drought,...
How and when the pathogen cycle is disrupted during plant development crucial for harnessing ontogenic resistance in sustainable agriculture. Ontogenic against powdery mildew (Erysiphe necator) was quantified on Vitis vinifera. Shoots were sampled vineyard at several dates seasonal growth processed laboratory under controlled conditions. Experiments conducted two susceptible vinifera Cabernet Sauvignon Merlot. The process of leaf investigated by measuring three quantitative traits...
Epidemiological simulation models coupling plant growth with the dispersal and disease dynamics of an airborne pathogen were devised for a better understanding host–pathogen dynamic interactions capacity grapevine development to modify progress powdery mildew epidemics. The first model is complex discrete mechanistic (M-model) that explicitly incorporates host dispersion at vine stock scale. second simpler ordinary differential equations (ODEs) compartmental SEIRT (C-model) handling (foliar...
A greater understanding of the development powdery mildew epidemics on vines would improve disease management by making assessments risk invasion more accurate. We characterized spatiotemporal spread in vineyard, quantified their variability, and identified factors responsible for it. described changes probability infection a leaf plot over time as function distance from source disease. Logistic models were fitted to field data artificially inoculated plots. The velocity decreased along row...
BACKGROUND: Limiting the use of fungicides is due to become an important issue in managing Erysiphe necator (Schwein) Burrill infections vineyards. The authors determined how three currently used by vine growers could be managed control early stages E. necator-induced epidemic. RESULTS: Leaf-disc bioassays and field experiments suggested that protectant quinoxyfen induced minor disruption development, but compounds with curative properties (tebuconazole trifloxystrobin) caused significant,...
Abstract BACKGROUND The primary strategy to control powdery mildew in Chilean vineyards involves periodic fungicide spraying, which may lead many environmental and human health risks. This study aimed implement evaluate the effectiveness economic feasibility of a novel decision support ( DSS ) limit number treatments against this pathogen. An experiment was conducted between 2010 2013 seasons two irrigated vine fields, one containing cultivar Cabernet Sauvignon CS other Chardonnay CH )....
Abstract The most sustainable management of resistant varieties involves understanding which defence mechanisms the plant uses according to its resistance genes and stage development how effective these are. Three grapevine were compared for their susceptibility versus powdery mildew: Vitis vinifera ‘Cabernet Sauvignon’ (CS) two hybrids, ‘Artaban’ ‘Prior’. Four different leaf ages collected from 2‐year‐old grafted grapevines planted in pot or vineyard, several variables assessed each leaf:...
Mapping and analyzing the disease status of individual plants within a study area at successive dates can give insight into processes involved in spread disease. We propose permutation method to analyze such spatiotemporal maps binary data (healthy or diseased plants) regularly spaced plantings. It requires little prior information on causes handles missing censored data. A Monte Carlo test is used assess whether location newly independent previously plants. The takes account significant...
ABSTRACT Interactions between plant pathogens and other plant-associated microorganisms regulate disease. Deciphering the networks formed by these interactions, termed pathobiomes, is crucial to disease management. Our aim was investigate whether microbial association inferred from metabarcoding data give relevant insights into testing associations contain signals of ecological interactions. We used Poisson Lognormal Models construct then investigated some corresponded interactions...
We investigate the structure of travelling waves for a model fungal disease propagating over vineyard. This is based on set ODEs SIR-type coupled with two reaction-diffusion equations describing dispersal spores produced by fungus inside and An estimate biological parameters in suggests to use singular perturbation analysis. It allows us compute speed profile waves. The analytical results are compared numerical simulations.