A5036165809- Plant-Microbe Interactions and Immunity
- Plant tissue culture and regeneration
- Plant Stress Responses and Tolerance
- Allelopathy and phytotoxic interactions
- Plant nutrient uptake and metabolism
- Weed Control and Herbicide Applications
- Phytochemicals and Antioxidant Activities
- Plant Micronutrient Interactions and Effects
- Horticultural and Viticultural Research
- Microbial Metabolites in Food Biotechnology
- Pesticide and Herbicide Environmental Studies
- Plant Pathogens and Fungal Diseases
- Nematode management and characterization studies
- Aluminum toxicity and tolerance in plants and animals
- Plant Parasitism and Resistance
- Genetic and Environmental Crop Studies
- Agriculture, Plant Science, Crop Management
- Insect Pest Control Strategies
- Botanical Research and Chemistry
- Postharvest Quality and Shelf Life Management
- Agriculture and Rural Development Research
- Banana Cultivation and Research
- Plant Disease Management Techniques
- Tannin, Tannase and Anticancer Activities
- Advanced Scientific Research Methods
Physique et Physiologie Intégratives de l'Arbre en Environnement Fluctuant
2009-2023
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2023
Université Clermont Auvergne
2005-2020
Centre National de la Recherche Scientifique
2020
Clermont Université
2012-2016
Institut National de la Recherche Agronomique
2014
National Research Institute of Rural Engineering, Water and Forests
2013
Laboratoire de Génétique & Evolution des Populations Végétales
1996-2003
University of California, Berkeley
1992-1996
Université d'Artois
1996
AbstractMessenger RNA accumulation of various stress-related protein genes was monitored in response to Cd Vicia faba plants. Metal treatment induced reactive oxygen species (ROS) production. H2O2 accumulated 12 h after the exposure roots proportionally intracellular content treated plants and O2− by 24 h. The time course oxidative stress evidenced malondialdehyde (MDA) indicated that lipoperoxidation occurred treatment. Prior burst, metal a similar dose-dependent kinetic transcript for...
Plant defense inducers (PDIs) are booming and attractive protection agents designed to immunostimulate the plant reduce subsequent pathogen colonization. The structure-PDI activity relationships of four flavan-3-ols: Epicatechin (EC), Epigallocatechin (EGC), gallate (ECG), (EGCG) Gallotannic acid (GTA) were investigated in both whole suspension cell systems. ECG, EGCG, GTA displayed elicitor activities. Their infiltration into tobacco leaves induced hypersensitive reaction-like lesions with...
Red maple leaf extracts (RME) were tested for their plant defense inducer (PDI) properties. Two obtained and compared by different approaches: RME1 using ethanol–water (30–70%, v/v, 0.5% HCl 1N) RME2 pure water. Both titrated at 1.9 g L−1 in polyphenols infiltrated into tobacco leaves efficiently induced hypersensitive reaction-like lesions with topical accumulation of auto-fluorescent compounds noted under UV scopoletin titration assays. The antimicrobial marker PR1, β−1,3-glucanase PR2,...
Alkyl gallates showed elicitor activities on tobacco in both whole plants and cell suspensions. Methyl gallate (MG), ethyl (EG), propyl (PG) infiltration into leaves induced hypersensitive reaction-like lesions topical production of autofluorescent compounds revealed under UV light. When sprayed at 5 mM, EG promoted upregulation defense-related genes such as the antimicrobial PR1, β-1,3-glucanase PR2, Chitinase PR3, osmotin PR5 target genes. Tobacco BY-2 cells challenged with underwent death...
Grape marc extract (GME) acts as an elicitor of plant defense responses. This study analyzed GME-induced reactions in NahG transgenic tobacco. Leaf infiltration leaves revealed HR-like with reduced lesions and weak deployment autofluorescent compounds the surrounding infiltrated tissues. The β-1,3-glucanase PR2-, endochitinase PR3-, osmotin PR5-target transcript levels were strongly lowered leaves, mutant failed to accumulate antimicrobial PR1 transcripts. protection against Phytophthora...
Young chicory plants transferred to abscisic acid (ABA)-containing media displayed changes in nitrate and carbohydrate metabolism. The hormone (10−7 M) rapidly promoted reductase (NADH:NR, EC 1.6.6.1) activity (NRA) roots. hormonal effects on NRA were not responsive dose concentrations (10−8 10−4 related the intracellular content. Furthermore, ABA-regulated was modulated by a phosphorylation/dephosphorylation mechanism. ELISA experiments using NR antibodies showed that protein accumulated...
This study investigated the environmental fate of myrigalone A, a light absorbing natural herbicide found on leaves and fruits Myrica gale. Myrigalone A was irradiated in water as dry solid deposit to simulate reactions leaves, alone presence terpenes generated by The phototransformation fast ( t1/2 = 35 min water). Analyses liquid chromatography coupled high resolution orbitrap electrospray mass spectrometry (MS) gas chromatography-MS revealed formation 11 photoproducts 9 gaseous phase....
Xanthene-1,9-dione-3,4-dihydro-6-methylsulfonyl (1), the main product of sulcotrione phototransformation on plant leaves, was slowly hydrolyzed into 2-hydroxy-4-methylsulfonylbenzoic acid (2) and 1,3-cyclohexanedione (3) in aqueous solution. Interestingly, rate hydrolysis significantly enhanced presence roots monocotyledonous plants, while same treatment showed adverse effects broadleaf weeds. Root growth enhancement varied according to species concentrations compound 2, as shown with Zea...