A5051129921- Horticultural and Viticultural Research
- Plant Physiology and Cultivation Studies
- Plant Water Relations and Carbon Dynamics
- Fermentation and Sensory Analysis
- Genetic Mapping and Diversity in Plants and Animals
- Genetics and Plant Breeding
- Crop Yield and Soil Fertility
- Remote Sensing in Agriculture
- Greenhouse Technology and Climate Control
- Plant and animal studies
- Plant responses to elevated CO2
- Forest Insect Ecology and Management
- Plant Molecular Biology Research
- Leaf Properties and Growth Measurement
- Agriculture and Rural Development Research
- Genetic and phenotypic traits in livestock
- Plant Stress Responses and Tolerance
- Light effects on plants
- Plant Pathogens and Fungal Diseases
- Forest ecology and management
- Nuts composition and effects
- Water-Energy-Food Nexus Studies
- Climate change impacts on agriculture
- Photosynthetic Processes and Mechanisms
- Plant nutrient uptake and metabolism
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2025
Laboratoire d'Écophysiologie Moléculaire des Plantes sous Stress Environnementaux
2015-2024
Genetic Improvement and Adaptation of Mediterranean and Tropical Plants
2018-2024
Institut Agro Montpellier
2014-2024
Université de Montpellier
2017-2024
Agropolis International
2018-2024
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2018-2022
L'Institut Agro
2022
University of Bristol
2019-2022
Victoria University of Wellington
2019
Assessing the genetic variability of plant performance under heat and drought scenarios can contribute to reduce negative effects climate change. We propose here an approach that consisted (1) clustering time courses environmental variables simulated by a crop model in current (35 years × 55 sites) future conditions into six temperature water deficit as experienced maize (Zea mays L.) plants; (2) performing 29 field experiments contrasting across Europe with 244 hybrids; (3) assigning...
Significance Breeding crops with more biomass produced per drop of water transpired is a key challenge in the context climate change. However, tight coupling between transpiration and carbon assimilation during day makes it challenging to decrease loss without altering photosynthesis reducing crop yield. We tested whether at night when inactive could substantially reduce growth—a hypothesis that, our knowledge, has never been genetically addressed any species. By studying whole progeny...
High temperature promotes guard cell expansion, which opens stomatal pores to facilitate leaf cooling. How the high-temperature signal is perceived and transmitted regulate aperture is, however, unknown. Here, we used a reverse-genetics approach understand high temperature-mediated opening in Arabidopsis (
In the face of water stress, plants evolved with different abilities to limit decrease in leaf potential, notably daytime (ΨM). So-called isohydric species efficiently maintain high ΨM, whereas anisohydric cannot prevent ΨM from dropping as soil deficit develops. The genetic and physiological origins these differences (an)isohydric behaviours remain be clarified. This is particular interest within such Vitis vinifera L. where continuous variation level isohydry has been observed among...
Abstract Stomatal conductance is central for the trades‐off between hydraulics and photosynthesis. We aimed at deciphering its genetic control that of responses to evaporative demand water deficit, a nearly impossible task with gas exchanges measurements. Whole‐plant stomatal was estimated via inversion Penman–Monteith equation from data transpiration plant architecture collected in phenotyping platform. have analysed jointly 4 experiments contrasting environmental conditions imposed panel...
Plants evolved different strategies to cope with water stress. While isohydric species maintain their midday leaf potential (ΨM) under soil deficit by closing stomata, anisohydric higher stomatal aperture and exhibit substantial reductions in ΨM. It was hypothesized that isohydry is related a locally sensitivity of stomata the drought-hormone abscisic acid (ABA). Interestingly, recent lines evidence Arabidopsis (Arabidopsis thaliana) suggested responsiveness also controlled an ABA action on...
Despite previous reports on the genotypic variation of architectural and functional traits in fruit trees, phenotyping large populations field remains challenging. In this study, we used high-throughput methods an apple tree core-collection (1000 individuals) grown under contrasted watering regimes. First, was achieved using T-LiDAR scans for estimating convex alpha hull volumes silhouette to total leaf area ratio (STAR). Second, a semi-empirical index (IPL) computed from chlorophyll...
Background: Water resource is a major limiting factor impacted by climate change that threatens crop production and quality. Understanding the ecophysiological mechanisms involved in response to water deficit crucial select new varieties more drought tolerant. A bottleneck hampering such advances lack of methods for measuring traits on large populations individuals. We investigated relevance spectroscopy poro-fluorometry with related high-throughput measurement devices predict leaf...
Aims: Water scarcity, associated with climate change, is a particular threat to the sustainability of viticulture in present areas cultivation, usually prone drought. Breeding grapevine for reduced water use, better extraction and maintained production (i.e., high use efficiency) therefore major interest.Methods results: This requires comprehensive knowledge physiological impacts drought on yield quality. Attention should be paid those mechanisms involved regulation status plant tissues, as...
Multi-genotype canopies are frequent in phenotyping experiments and of increasing interest agriculture. Radiation interception efficiency (RIE) radiation use (RUE) have low heritabilities such canopies. We propose a revised Monteith equation that identifies environmental genetic components RIE RUE. An term, component RIE, characterizes the effect presence or absence neighbours on light interception. The ability given plant to compete with its is then identified, which accounts for...
Expansion of the maize growing area was central for food security in temperate regions. In addition to suppression short-day requirement floral induction, it required breeding a large range flowering time that compensates effect South-North gradients temperatures. Here we show role novel florigen gene, ZCN12, latter adaptation cooperation with ZCN8. Strong eQTLs ZCN8 and measured 327 lines, accounted most genetic variance platform field experiments. ZCN12 had strong on transgenic Arabidopsis...
Although UVA radiation (315-400 nm) represents 95% of the UV reaching earth's surface, surprisingly little is known about its effects on plants [1]. We show that in Arabidopsis, short-term exposure to inhibits opening stomata, and this requires a reduction cytosolic level cGMP. This process independent UVR8, UVB receptor. A cGMP-activated phosphodiesterase (AtCN-PDE1) was responsible for UVA-induced decrease cGMP Arabidopsis. AtCN-PDE1-like proteins form clade within large...
Growth at increased concentrations of CO2 induces a reduction in seed zinc (Zn) and iron (Fe). Using Arabidopsis thaliana, we investigated whether this could be mitigated by reducing the elevated -induced decrease transpiration. We used an infrared imaging-based screen to isolate mutants At1g08080 that encodes ALPHA CARBONIC ANHYDRASE 7 (ACA7). aca7 mutant alleles display wild-type (WT) responses abscisic acid (ABA) light but are compromised their response . ACA7 is expressed guard cells....
Tree architecture shows large genotypic variability, but how this affects water-deficit responses is poorly understood. To assess the possibility of reaching ideotypes with adequate combinations architectural and functional traits in face climate change, we combined high-throughput field phenotyping genome-wide association studies (GWAS) on an apple tree (Malus domestica) core-collection. We used terrestrial light detection ranging (T-LiDAR) scanning airborne multispectral thermal imagery to...
<p class="Abstract" style="text-align: justify;"><strong>Aims:</strong> Water scarcity, associated with climate change, is a particular threat to the sustainability of viticulture in present areas cultivation, usually prone drought. Breeding grapevine for reduced water use, better extraction and maintained production (i.e., high use efficiency) therefore major interest.</p><p justify;"><strong>Methods results:</strong> This requires comprehensive...
The timing of floral budbreak in apple has a significant effect on fruit production and quality. Budbreak occurs as result complex molecular mechanism that relies accurate integration external environmental cues, principally temperature. In the pursuit understanding this mechanism, especially with respect to aiding adaptation climate change, QTL at top linkage group (LG) 9 been identified by many studies budbreak, but genes underlying it remain elusive. Here, together dessert core collection...
Abstract Viticulture has to cope with climate change and decrease pesticide inputs, while maintaining yield wine quality. Breeding is a key lever meet this challenge, genomic prediction promising tool accelerate breeding programs. Multivariate methods are potentially more accurate than univariate ones. Moreover, some also provide marker selection, thus allowing quantitative trait loci (QTLs) detection the identification of positional candidate genes. To study both QTL for drought-related...
In the context of climate change, extreme heatwaves are often observed. The consequences these events led to leaf and grape burning, as observed in June 2019 South France. Previous observations showed that genotypic variability exists response heatwaves. One main hypotheses explain differences is genotypes could differentially regulate their temperature. This temperature closely associated with stomatal conductance amount energy absorbed by leaves. known be a consequence plant architecture...
Climate change critically challenges viticulture. Among other threats, extreme and increasingly frequent heatwaves cause irreversible burns on leaves bunches. A series of observations experiments was conducted to better understand how leaf originate whether genetics or management practices can mitigate them. In 2019, a panel 279 potted cultivars Vitis vinifera L. grown outdoors suffered heat peak genetic origin burn variability demonstrated. To deeper explore this variability, fourteen were...