A5002825515- Plant Stress Responses and Tolerance
- Plant Micronutrient Interactions and Effects
- Plant nutrient uptake and metabolism
- Legume Nitrogen Fixing Symbiosis
- Aluminum toxicity and tolerance in plants and animals
- Plant responses to water stress
- Phytochemicals and Antioxidant Activities
- Photosynthetic Processes and Mechanisms
- Heavy metals in environment
- Essential Oils and Antimicrobial Activity
- Phytochemistry and Biological Activities
- Seed Germination and Physiology
- Plant Growth Enhancement Techniques
- Biocrusts and Microbial Ecology
- Silicon Effects in Agriculture
- Soil Carbon and Nitrogen Dynamics
- Plant responses to elevated CO2
- Botanical Research and Applications
- Plant Diversity and Evolution
- Plant Water Relations and Carbon Dynamics
- Growth and nutrition in plants
- Agronomic Practices and Intercropping Systems
- Algal biology and biofuel production
- Composting and Vermicomposting Techniques
- Plant tissue culture and regeneration
Center of Biotechnogy of Borj Cédria
2016-2025
Tunis El Manar University
2011-2022
Tunis University
2008-2022
Planta
2022
University of Sussex
2015-2021
Centre National de la Recherche Scientifique
2007-2021
Sorbonne Université
2007-2021
National Agency for Promotion of Research and Innovation
2021
Justus-Liebig-Universität Gießen
2021
Institut d'écologie et des sciences de l'environnement de Paris
2021
Among heavy metals, nickel, cadmium and lead have received a particular attention not only as potent hazards to human health but also given their constant increase in the environment bioaccumulation throughout food-chain. In plants, these metals may either directly or indirectly cause broad range of physiological biochemical dysfunctions culminating ultimately sharp decline crop production. Here, we present new insights regarding mechanisms governing metal phytotoxicity. addition, emphasize...
The aim of this study was to assess the antioxidant and antimicrobial activities in vitro 10 extracts halophyte Limonium delicatulum harvested two physiological stages, flowering vegetative, determine their phenolic compounds by reverse-phase high-performance liquid chromatography. solvent development stage significantly affected quantity phenols biological activity; best most were found at stage. Ethanol had total activity, while acetone greatest radical scavenging capacity (IC50 = 2 μg/mL)...
Abstract Plant growth under low K+ availability or salt stress requires tight control of and Na+ uptake, long-distance transport, accumulation. The family membrane transporters named HKT (for High-Affinity Transporters), permeable either to only, is thought play major roles in these functions. Whereas Arabidopsis (Arabidopsis thaliana) possesses a single transporter, involved transport vascular tissues, larger number are present rice (Oryza sativa) as well other monocots. Here, we report on...
Early changes in physiological and oxidative status induced by salt stress were monitored two Brassicaceae plants differing their tolerance to salinity, Cakile maritima (halophyte) Arabidopsis thaliana (glycophyte). Growth response antioxidant defense of C. under 400 mM NaCl compared with those A. exposed 100 NaCl. Salinity early growth reduction that is less pronounced than thaliana. Maximum hydrogen peroxide (H₂O₂) level occurred the leaves both species 4 h after onset treatment. A rapid...
The effects of salt stress on antioxidative activities were investigated in a coastal halophyte, Cakile maritima . Two Tunisian accessions, Jerba and Tabarka, compared. Plants subjected to 100, 200, or 400 m M NaCl for 20 days. Parameters oxidative [malondialdehyde (MDA), electrolyte leakage (EL), hydrogen peroxide (H 2 O ) concentration], several enzymes [superoxide dismutase (SOD), catalase (CAT), peroxydase (POD), ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR),...
Summary Many essential oils are known to possess an antioxidant activity and antifungal properties therefore they potentially act as antimycotic agents. Essential oil of clove ( Eugenia caryophyllata ) was isolated by hydrodistillation. The chemical composition the analysed gas chromatography chromatography/mass spectroscopy. effect tested evaluated measuring its 2,2‐diphenyl‐l‐1‐picrylhydrazil radical scavenging ability antiradical dose required cause a 50% inhibition (IC 50 recorded....
Summary Many plants accumulate proline, a compatible osmolyte, in response to various environmental stresses such as water deficit and salinity. In some stress responses, generate hydrogen peroxide (H 2 O ) that mediates numerous physiological biochemical processes. The aim was study the relationship between stress‐induced proline accumulation H production. Using pharmacological reverse genetic approaches Arabidopsis thaliana , we investigated role of NADPH oxidases, Respiratory burst...
Proline (Pro) accumulation occurs in various plant organisms response to environmental stresses. To identify the signaling components involved regulation of Pro metabolism upon water stress Arabidopsis (Arabidopsis thaliana), a pharmacological approach was developed. The role phosphoinositide-specific phospholipases C (PLCs) assessed by use aminosteroid U73122, commonly employed specific inhibitor receptor-mediated PLCs. We found that U73122 reduced pyrroline-5-carboxylate synthetase...