A5091650390- Plant nutrient uptake and metabolism
- Crop Yield and Soil Fertility
- Plant and animal studies
- Plant Micronutrient Interactions and Effects
- Ecology and Vegetation Dynamics Studies
- Plant Stress Responses and Tolerance
- Wheat and Barley Genetics and Pathology
- Plant Molecular Biology Research
- Legume Nitrogen Fixing Symbiosis
- Photovoltaic Systems and Sustainability
- Genetic diversity and population structure
- Soil Carbon and Nitrogen Dynamics
- Greenhouse Technology and Climate Control
- Solar Radiation and Photovoltaics
- Plant Parasitism and Resistance
- Plant tissue culture and regeneration
- Forest Insect Ecology and Management
- Botany and Plant Ecology Studies
- Trace Elements in Health
- Aluminum toxicity and tolerance in plants and animals
- Nitrogen and Sulfur Effects on Brassica
- Plant Pathogens and Fungal Diseases
- Plant Physiology and Cultivation Studies
- Microbial Metabolites in Food Biotechnology
- Polyamine Metabolism and Applications
Ecologie et Dynamique des Systèmes Anthropisés
2012-2024
Centre National de la Recherche Scientifique
2013-2024
Université de Picardie Jules Verne
2012-2024
Agroécologie
2019
University of Copenhagen
2008-2011
Département Santé des Plantes et Environnement
2007
Abstract The roles of two cytosolic maize glutamine synthetase isoenzymes (GS1), products the Gln1-3 and Gln1-4 genes, were investigated by examining impact knockout mutations on kernel yield. In gln1-3 gln1-4 single mutants double mutant, GS mRNA expression was impaired, resulting in reduced GS1 protein activity. phenotype displayed size number, with both phenotypes gln1-4. However, at maturity, shoot biomass production not modified either or mutants, suggesting a specific grain mutants....
In wheat the period of grain filling is characterized by a transition for all vegetative organs from sink to source status. To study this transition, progression physiological markers and enzyme activities representative nitrogen metabolism was monitored stage maturity in different leaf stages stem sections two (Triticum aestivum) cultivars grown at high low levels N fertilization. examined, we found general decrease metabolic occurred during ageing, that enhanced when plants were N-limited....
In order to improve our understanding of the regulation nitrogen assimilation and recycling in wheat (Triticum aestivum L.), we studied localization plastidic (GS2) cytosolic (GS1) glutamine synthetase isoenzymes glutamate dehydrogenase (GDH) during natural senescence flag leaf stem. mature leaves, large amounts GS1 were detected connections between mestome sheath cells vascular cells, suggesting an active transfer organic molecules within system leaf. Parallel senescence, increase a...
Summary Loss of aquaporin TIP1;1 in Arabidopsis has been suggested to result early senescence and plant death. This was based on the fact that a partial reduction by RNA interference (RNAi) led gradual phenotypes, ranging from indistinguishable wild type lethality, depending degree downregulation target messenger, displaying pleiotropic effects primary metabolism cell signalling. A hypothesis put forward suggest TIP1;1, apart its transport function, may play an essential role vesicle...
Abstract Metallothioneins (MTs) are low-molecular-weight, cysteine-rich proteins believed to play a role in cytosolic zinc (Zn) and copper (Cu) homeostasis. However, evidence for the functional properties of MTs has been hampered by methodological problems isolation characterization proteins. Here, we document that barley (Hordeum vulgare) MT3 MT4 exist planta they differ tissue localization as well metal coordination chemistry. Combined transcriptional histological analyses showed temporal...
Summary A novel Arabidopsis thaliana mutant, named hoc , was found to have an high organogenic capacity for shoot regeneration. The HOC locus may be involved in cytokinin metabolism leading cytokinin‐overproduction. In vitro root explants develop many shoots the absence of exogenous growth regulators. mutant displays a bushy phenotype with supernumerary rosettes and normal phyllotaxy, resulting from precocious axillary meristem development. Genetic molecular analyses show that regeneration...
The barley genome encodes a family of 10 metallothioneins (MTs) that have not previously been subject to extensive gene expression profiling. We show here MT1a, MT2b1, MT2b2 and MT3 in leaves increased more than 50-fold during the first d after germination. Concurrently, root-specific MT1b1 was 1000-fold up-regulated. Immunolocalizations provided evidence for accumulation MT1a MT2a proteins planta, with correlation transcript levels. In developing grains, MT4 4- 300-fold over 28-day-period...
Foliar fertilization is a potential tool to increase the use-efficiency of nitrogen (N) fertilizers. However, whilst leaf scorching has frequently been reported, underlying physiological processes are not clear. In present work, we investigate intensity as affected by balance between ammonium assimilation and accumulation. Leaves were sprayed with urea–ammonium nitrate (UAN) solution without surfactant or applied liquid droplets urea in different N concentrations surfactant. UAN solutions...
Summary Comparative trait analyses of native and invasive plant species have enriched our understanding the strategies that make plants successful in particular contexts. However, it is generally unknown whether traits associated with invasiveness arise de novo introduced range or represent a case ‘pre‐adaptation’ some to become invasive. We compared functional two species, Prunus serotina , tree Eastern North America ( ENA ) European forests, Rhamnus cathartica shrub Europe both their...
Salinity is one of the most important stresses that reduces plant growth and productivity in several parts world. Nine Tunisian durum wheat genotypes grown under hydroponic conditions were subjected to two levels salt stress (100 170 mM NaCl) for 21 days. An integrative analysis revealing impact salinity on key phenotypic physiological marker traits was then conducted. Principal component grouped these into three different clusters corresponding absence stress. This also allowed...
Abstract Questions Rhododendron ponticum subsp. baeticum is an invasive shrub of growing concern in continental Europe, but little known about its impact on native plant communities. Here we ask: do environmental conditions differ between forest stands invaded by it and uninvaded stands? Do these differences correlate with R. 's cover? Are associated taxonomic functional diversity vascular species the herb layer? Can vegetation changes be explained sorting certain life‐history traits...
This report presents information on all aspects of the biology, ecology and invasion behaviour Rhododendron ponticum L., particularly R. subsp. baeticum (Boiss. & Reut.) Hand.-Mazz. The main topics presented are: taxonomy, distribution, history introduction spread, ecology, impacts, management. subspecies is native to Iberian Peninsula, where it close extinction. shade-tolerant evergreen shrub has been broadly introduced throughout Europe since 18th century, mainly for ornamental purposes....