A5081654217- Horticultural and Viticultural Research
- Plant Physiology and Cultivation Studies
- Postharvest Quality and Shelf Life Management
- Fermentation and Sensory Analysis
- Plant Stress Responses and Tolerance
- Plant Gene Expression Analysis
- Wine Industry and Tourism
- Plant Molecular Biology Research
- Plant Reproductive Biology
- Sensory Analysis and Statistical Methods
- Plant biochemistry and biosynthesis
- Plant Surface Properties and Treatments
- Plant responses to water stress
- Plant tissue culture and regeneration
- Insect Pheromone Research and Control
- Insect behavior and control techniques
- Plant Pathogens and Fungal Diseases
- Algal biology and biofuel production
- Photosynthetic Processes and Mechanisms
- Plant Disease Management Techniques
- Insect-Plant Interactions and Control
- Greenhouse Technology and Climate Control
- Food Quality and Safety Studies
- Insect Pest Control Strategies
- Molecular Biology Techniques and Applications
Laboratoire de Recherche en Sciences Végétales
2006-2025
Genomics and Biotechnology of the Fruits Laboratory
2016-2025
Université Toulouse III - Paul Sabatier
2022-2025
Université de Toulouse
2014-2025
Centre National de la Recherche Scientifique
2022-2025
Institut National Polytechnique de Toulouse
2011-2024
École Nationale Supérieure Agronomique de Toulouse
2012-2024
AGroecologies, Innovations & Ruralities
2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2021
Institut National de la Recherche Agronomique
2011
Tomato fruit ripening is controlled by ethylene and characterized a shift in color from green to red, strong accumulation of lycopene, decrease β-xanthophylls chlorophylls. The role other hormones, such as auxin, has been less studied. Auxin retarding the ripening. In tomato, there no study carotenoid content related transcript after treatment with auxin.We followed effects application various hormone-like substances "Mature-Green" fruits. Application an precursor (ACC) or auxin antagonist...
Abstract Successful completion of fruit developmental programs depends on the interplay between multiple phytohormones. However, besides ethylene, impact other hormones quality traits remains elusive. A previous study has shown that down-regulation SlARF4, a member tomato (Solanum lycopersicum) auxin response factor (ARF) gene family, results in dark-green phenotype with increased chloroplasts (Jones et al., 2002). This further examines role this transcriptional regulator during development...
The treatment of grape berries ( Vitis vinifera L. cv. Cabernet Sauvignon) with the ethylene‐releasing compound, 2‐chloroethylphosphonic acid (2‐CEPA), at veraison is a method known to enhance skin colour. We observed that it produced 6‐fold increase, up 30 pmol g −1 FW, cluster internal ethylene compared untreated controls within 24 h following treatment. This upsurge was associated increased levels chalcone synthase CHS ) and flavanone 3‐hydroxylase F3H transcripts, which persisted over 20...
Pyoverdines are siderophores synthesized by fluorescent Pseudomonas spp. Under iron-limiting conditions, these high-affinity ferric iron chelators excreted bacteria in the soil to acquire iron. produced beneficial ameliorate plant growth. Here, we investigate physiological incidence and mode of action pyoverdine from fluorescens C7R12 on Arabidopsis (Arabidopsis thaliana) plants grown under iron-sufficient or iron-deficient conditions. Pyoverdine was provided medium its iron-free structure...
Auxin is known to regulate cell division and elongation, thus controlling plant growth development. Part of the auxin signaling pathway depends on fine-tuned degradation auxin/indole acetic acid (Aux/IAA) transcriptional repressors. Recent evidence indicates that Aux/IAA proteins play a role in fruit development tomato (Solanum lycopersicum Mill.), model species for fleshy We report here functional characterization Sl-IAA17 during Silencing by an RNA interference (RNAi) strategy resulted...
Arbuscular mycorrhizal symbiosis is a mutualistic interaction between most land plants and fungi of the glomeromycotina subphylum. The initiation, development regulation this involve numerous signalling events within symbiotic partners. Among other signals, phytohormones are known to play important roles at various stages interaction. During presymbiotic steps, plant roots exude strigolactones which stimulate fungal spore germination hyphal branching, promote initiation symbiosis. At later...
Grape is considered as a non-climacteric fruit, the maturation of which independent ethylene. However, previous work had shown that ethylene capable affecting physiological processes during grape berries. Experiments were designed to screen gene pool affected by at ripening inception in Cabernet Sauvignon The results showed only 73 14 562 genes microarray slides significantly modulated 24-h treatment (4 microl l(-1)), performed 8 weeks after flowering. study then focused on accumulation...
There are several studies suggesting that tomato (Solanum lycopersicum) chromoplasts arise from chloroplasts, but there is still no report showing the fluorescence of both chlorophylls and carotenoids in an intermediate plastid, video this transition phase.Pigment within individual plastids, isolated fruit using sucrose gradients, was observed at different ripening stages, situ real-time recording pigment performed on live slices.At mature green red homogenous fractions chloroplasts were...
Glycosides are an important potential source of aroma and flavour compounds for release as volatiles in flowers fruit. The production glycosides is catalysed by UDP-glycosyltransferases (UGTs) that mediate the transfer activated nucleotide sugar to acceptor aglycones. A screen UGTs expressed kiwifruit (Actinidia deliciosa) identified gene AdGT4 which was highly floral tissues whose expression increased during fruit ripening. Recombinant enzyme glycosylated a range terpenes primary alcohols...
Ethylene is a gaseous plant hormone perceived by family of receptors in Arabidopsis (Arabidopsis thaliana) including ETHYLENE RESPONSE1 (ETR1) and ETR2. Previously we showed that etr1-6 loss-of-function plants germinate better etr2-3 worse than wild-type under NaCl stress response to abscisic acid (ABA). In this study, expanded these results showing ETR1 ETR2 have contrasting roles the control germination variety inhibitory conditions for seed such as treatment with KCl, CuSO4, ZnSO4,...
Ethylene regulates many aspects of plant growth and development. It is perceived by a family ethylene receptors (ETRs) that have been well described. However, full understanding ETR function complicated functional redundancy between the receptor isoforms. Here, we characterize new ETR, SlETR7, was revealed tomato genome sequencing. SlETR7 expression in fruit pericarp increases when ripens its synchronized with SlETR1, SlETR2, SlETR5 which occurs later ripening phase than increase observed...
ABSTRACT Shredded carrots were either chlorinated, rinsed, and spin‐dried as in industrial processes, or irradiated (2 kGy), replacing the three steps. Several factors defining quality of minimally processed vegetables monitored during storage at 10°. Atmospheres inside micro‐porous plastic bags stabilized 7–15% O 2 10–15% CO . Sugar levels tissues twice high samples chlorinated ones. Irradiation also prevented losses orange color carotenes. Growth aerobic mesophilic lactic microflora was...
Chromoplasts are nonphotosynthetic plastids that accumulate carotenoids. They derive from other plastid forms, mostly chloroplasts. The biochemical events responsible for the interconversion of one form into another poorly documented. However, thanks to transcriptomics and proteomics approaches, novel information is now available. Data proteomic analysis revealed importance lipid metabolism carotenoids biosynthetic activities. loss photosynthetic activity was associated with absence...
Ethylene modulates plant developmental processes including flower development. Previous studies have suggested ethylene participates in pollen tube (PT) elongation, and both production perception seem critical at the time of fertilization. The full gene set regulated by during PT growth is unknown. To study this, we used various EThylene Receptor (ETR) tomato (Solanum lycopersicum) mutants: etr3-ko, a loss-of-function (LOF) mutant; NR (NEVER RIPE), gain-of-function (GOF) mutant. etr3-ko PTs...
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...
Background: The assembly of tree microbiota is a dynamic process that varies across space and time, influenced by both biotic abiotic factors. Plants have developed defence strategies, mediated phytohormones such as ethylene, to manage its interactions with pathogens and, in certain non-perennials, the commensal microbiota. However, whether how ethylene regulation affects unknown. Results: We investigated fungal bacterial communities poplars (P. tremula x. P. tremuloides T89), altered either...