A5080521175- Horticultural and Viticultural Research
- Fermentation and Sensory Analysis
- Plant Physiology and Cultivation Studies
- Plant Water Relations and Carbon Dynamics
- Wine Industry and Tourism
- Plant Pathogens and Fungal Diseases
- Agriculture and Rural Development Research
- Forest Insect Ecology and Management
- Nuts composition and effects
- Plant biochemistry and biosynthesis
- Irrigation Practices and Water Management
- Tree-ring climate responses
- Plant Reproductive Biology
- Greenhouse Technology and Climate Control
- Plant Gene Expression Analysis
- Plant and Fungal Interactions Research
- French Urban and Social Studies
- Plant Surface Properties and Treatments
- Remote Sensing in Agriculture
- Climate change impacts on agriculture
- Plant tissue culture and regeneration
- Plant responses to elevated CO2
- Plant and animal studies
- Polysaccharides and Plant Cell Walls
- Bioenergy crop production and management
Laboratoire d'Écophysiologie Moléculaire des Plantes sous Stress Environnementaux
2015-2024
Institut Agro Montpellier
2014-2024
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2005-2024
Université de Montpellier
2019-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2021-2024
L'Institut Agro
2020-2024
Commonwealth Scientific and Industrial Research Organisation
2005-2014
Plant Industry
2014
École nationale supérieure d'arts et métiers
2006
Health Sciences and Nutrition
2006
Responses of grapevine vegetative growth components to mild, medium and severe soil water deficits were used identify simple sensitive indicators for early diagnosis stress. Soil deficit was characterised as the fraction transpirable (FTSW) remaining in a water-depleted rootzone. Growth included number emerged leaves on first (Ist) second (IInd) order lateral branches, leaf area internode length each phytomer Ist frequency IInd branching. These measured greenhouse Shiraz (syn. Syrah)...
• Background and Aims Soil water deficit is a major abiotic stress with severe consequences for the development, productivity quality of crops. However, it considered positive factor in grapevine management (Vitis vinifera), as has been shown to increase grape quality. The effects soil on organogenesis, morphogenesis gas exchange shoot were investigated. Methods Shoot organogenesis was analysed by distinguishing between various steps development main axis branches. Several experiments...
The increasing temperature associated with climate change impacts grapevine phenology and development critical effects on grape yield composition. Plant breeding has the potential to deliver new cultivars stable quality under warmer conditions, but this requires identification of genetic determinants. This study tested potentialities microvine boost genetics in grapevine. A mapping population 129 microvines derived from Picovine x Ugni Blanc flb, was genotyped Illumina® 18 K SNP (Single...
This study investigates whether ethanol (EtOH) modulates response to drought in grapevine, as demonstrated previously Arabidopsis, rice and wheat. We ran a potted-cutting experiment with progressive soil water deficit. Plants pre-treated 250 mM EtOH solutions exhibited slower depletion of the fraction transpirable (FTSW), compared controls. While decreased transpiration early days, these plants maintained higher leaf than controls after 10 days depletion. The FTSW threshold for process was...
Light pruning and deficit irrigation regimes are practices which widely used in high yielding commercial vineyards the warm climate regions of Australia. Little information is available on their impacts carbohydrate dynamics vegetative organs within between seasons, resulting plant capacity to maintain productivity ripen fruits. This study was conducted address this gap knowledge over five vintages Vitis vinifera L. cv. Cabernet Franc, Shiraz Sauvignon Sunraysia region Victoria, Lighter did...
Diurnal changes in gene expression occur all living organisms and have been studied on model plants such as Arabidopsis thaliana. To our knowledge the impact of nycthemeral cycle genetic program fleshly fruit development has hitherto overlooked. In order to circumvent environmental throughout development, young ripening berries were sampled simultaneously continuously flowering microvines acclimated controlled circadian light temperature changes. Gene profiles along monitored during both day...
Aim: In the long term, genetic improvement is one of major strategies to support sustainable wine production in a changing climate. Over past 5 years, we have developed an interdisciplinary research program that aimed to: i) characterize impact temperature increase sensed by entire plant or individual bunches on development and functioning plant, ii) identify physiological molecular mechanisms regulating response vegetative reproductive heat stress iii) develop tools map quantitative trait...
This study aimed to determine how within-plot soil heterogeneity combined with yearly climate variability can promote the of vine growth at plot level, and which soil-climate parameters influence final yield berry composition most. An 8-year experiment was conducted on grapevine in two zones a vineyard (1 ha) differentiated according vigour as determined by NDVI: high (HV) low (LV). The properties (depth, texture composition), plant (shoots roots) production (yield components composition)...
Context and challenges: Like most other perennial crops, the grapevine needs to undergo a juvenile period before fruiting. Thus, development of reproductive organs from seedlings is possible only after second or third vegetative cycle. Each proleptic axis then displays one three inflorescences per growing These biological features size adult vine are major hindrances design experiments on fruit plant physiology, complicate lengthen time required for studies in breeding genetics.Significance...
The majority of vineyards are grown under limiting water supply, with consequences on grapevine physiology, berry growth and composition/quality versus wine styles. Assessing vine status is crucial to understand function optimize drought mitigation strategies, such as irrigation. In this regard, the leaf potential methods, notably predawn stem potentials, relevant for quantifying generally used references calibrate others methods and/or precision
The spatial variability of vineyards can be characterised through precision viticulture that will allow setting the boundaries homogeneous management zones. This study aimed to evaluate impact soil and plant (site-specific management) increase yields improve berry quality. During three consecutive seasons, contrasting treatments designed ad hoc for two zones vigour pre-established by NDVI were tested: high zone (HV) low (LV). at reducing water nitrogen supply improving microclimatic...
The use of standardized plant material grown in a controlled environment can facilitate disentangling the many impacts climate change on grapevine production and quality. <i>Microvine</i> is natural gibberellic acid-insensitive mutant showing dwarfism early, continuous flowering along vegetative axes. was initially proposed as model for genetics. Here, we examined its suitability characterizing reproductive growth development patterns responses to elevated temperature. A series experiments...
Aim: Nitrogen is a major element conditioning grapevine growth, yield and aromatic profiles of berries wines. Different tools can be used in order to detect differences N status the plant, including direct measurements soil, plant nitrogen (eg. petiole; must), or indirect observations nutritional such as leaf transmittance reflectance SPAD; NDVI). However, relationships between these indicators overall functioning over vintages remain poorly known. The present study aimed at quantifying key...
Late ripening berry dehydration is an important phenomenon that occurs through grape water loss due to the alteration of fruit budget when transpiration and potential back flow plant exceed import into phloem xylem. Berry shrivelling can have a significant economic impact, reducing yields by ≥25 % with consequences on composition resulting wine. Its occurrence are expected increase predicted climate change, shifting development warmer periods (i.e., heat waves drought events).
Grapevine decline, a major global viticulture issue, is defined as multi-year decrease in vine productivity and/or increase mortality. Although grapevine trunk diseases are one of the most-studied causes, decline multifactorial and associated with more than 70 factors, including abiotic biotic hazards. With so many factors to consider, phenomenon difficult understand, especially for winegrowers. Our study aims make it easier determine assess by focusing on three key indicators: yield,...
<p style="text-align: justify;"><strong>Aims</strong>: A water stress index based on a balance model was tested as tool for classifying the paths experienced by grapevines in various French Mediterranean vineyards. The relations between value and grapevine yield berry quality (sugars, organic acids, anthocyanins) at harvest were investigated.</p><p justify;"><strong>Methods results</strong>: data set of 102 situations, each combining one location,...
The ability of 'digital agriculture' to support on-farm decision making is predicated on the real-time combination observations and prior knowledge into an integrated digital environment. mathematical discipline that seeks provide this integration known as model data assimilation (DA), with demonstrated benefits including improved predictive reliability, capacity identify unexpected changes in field conditions potential measurement errors. Despite routine adoption other fields, delayed DA...
Screening for drought performance among novel fungi-tolerant grapevine genotypes is a key point to consider in semiarid regions where water scarcity common problem during fruit ripening period. It therefore important evaluate the genotypes' responses at level of carbon metabolism and demand, under deficit conditions. This study aimed characterize leaf plant use efficiency (respectively named WUEi WUEpl) INRAE (including LowSugarBerry (LSB) genotypes), mild high-water (WD) decipher...
Monitoring vine water status is crucial for wine production. However, in Mediterranean regions, a key indicator evaluating this information, predawn leaf potential (Ψpd), challenging to obtain terms of logistics and costs. To address this, the iG-Apex, plant growth index based on shoot observations has been proposed as being both low-cost easy collect. It found that strong correlation exists between iG-Apex Ψpd. Nonetheless, relationship Ψpd becomes increasingly uncertain growing season...
Abstract Studies suggest that ethanol (EtOH), triggers plant adaptation to various stresses at low concentrations (10 µM 10 mM). This study investigates whether EtOH induces drought acclimation in grapevine, as demonstrated previously Arabidopsis , rice, and wheat. Preliminary results with bare root Gamay cuttings showed those pre-treated aqueous solutions lost fewer leaves when deprived of water compared controls. Subsequently, we ran a potted-cutting experiment progressive soil deficit....