A5061980092- Marine and coastal plant biology
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Plant Stress Responses and Tolerance
- Algal biology and biofuel production
- Plant Gene Expression Analysis
- Lipid metabolism and biosynthesis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Photosynthetic Processes and Mechanisms
- Heavy metals in environment
- Environmental Toxicology and Ecotoxicology
- Plant Micronutrient Interactions and Effects
- Food composition and properties
- Coastal and Marine Management
- Bioenergy crop production and management
- Marine Bivalve and Aquaculture Studies
- Phytoestrogen effects and research
- Lignin and Wood Chemistry
- Microbial Metabolic Engineering and Bioproduction
- Biofuel production and bioconversion
- Seed Germination and Physiology
- Plant pathogens and resistance mechanisms
- Plant biochemistry and biosynthesis
- Plant Reproductive Biology
- Environmental and Social Impact Assessments
Centre National de la Recherche Scientifique
2002-2024
Unité de Glycobiologie Structurale et Fonctionnelle
2016-2024
Université de Lille
2010-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2023
Laboratoire de Génétique & Evolution des Populations Végétales
2007-2011
Université Lille Nord de France
2010-2011
Laboratoire de Physique des Lasers, Atomes et Molécules
2007-2008
Université de Bordeaux
1992-1995
Laboratoire de Biogenèse Membranaire
1995
Institut de Biochimie et Génétique Cellulaires
1992-1994
• We estimated the level of quantitative polymorphism for zinc (Zn) tolerance in neighboring metallicolous and nonmetallicolous populations Arabidopsis halleri tested hypothesis that divergent selection has shaped this polymorphism. A short-term hydroponic test was used to capture present between edaphic types, among within populations. measured six morphological physiological traits on shoots roots estimate response A. Zn. In order assess adaptive value Zn polymorphism, we compared...
Bast fibres are characterized by very thick secondary cell walls containing high amounts of cellulose and low lignin contents in contrast to the heavily lignified typically found xylem tissues. To improve quality fiber-based products future, a thorough understanding main wall polymer biosynthetic pathways is required. In this study we have carried out characterization genes involved biosynthesis flax along with some their regulation mechanisms. We first identified members phenylpropanoid...
Abstract Laminaria saccharina (Lamouroux) form the largest, most abundant and conspicuous seaweed populations along French coast of eastern English Channel. As they are located in intertidal zone, exposed to considerable irradiance variations, mainly related tidal cycles. The response these macro‐algae light variations over a simulated daily cycle was investigated laboratory during spring, autumn winter using chlorophyll fluorescence pigment analysis. maximum quantum yield photosystem II...
Fresh weight (FW), dry (DW), carbon and nitrogen content were measured for specimens of Laminaria saccharina (Heterokontophyta: Phaeophyceae) sampled in the eastern English Channel order to conduct a biometrical study. The aim was relate masses algae simple rapid morphological measurement total length sporophyte. These relationships highly significant appeared very useful express standing biomass L. terms or then consider dynamic processes such as primary production. Variations tissue (C)...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 247:43-50 (2003) - doi:10.3354/meps247043 Laminaria saccharina photosynthesis measured in situ: photoinhibition and xanthophyll cycle during a tidal François Gévaert1,*, Anne Créach1, Dominique Davoult2, Aline Migné3, Guy Levavasseur2, Pierre Arzel4, Anne-Catherine Holl1, Yves Lemoine1 1UMR CNRS 8013 ŒELICO¹,...
Lignin is present in plant secondary cell walls and among the most abundant biological polymers on Earth. In this work we investigated potential role of UGT72E gene family regulating lignification Arabidopsis. Chemical determination floral stem lignin contents ugt72e1, ugt72e2, ugt72e3 mutants revealed no significant differences compared to WT plants. contrast, use a novel safranin O ratiometric imaging technique indicated increase wall content both interfascicular fibers xylem from young...
The photochemical behavior of intact stream periphyton communities in France was evaluated response to the time course natural light. Intact biofilms grown on glass substrata were collected at three development stages July and November, structural parameters investigated (diatom density taxonomy). At each season, physiological based pigment analysis (HPLC) pulse-amplitude-modulated (PAM) chl fluorescence technique estimated periodically during a day from dawn zenith. Regardless community...
Photosynthetic microphytobenthic activity has increasingly been examined using pulse‐amplitude‐modulated (PAM) fluorescence techniques. Nevertheless, estimating carbon production rates from measurements implies the establishment of reliable relationships. The aim this study was to determine such a relationship field both PAM and CO 2 fluxes. Three sites varying sedimentary features were investigated in different seasons. Both linear with plateau relationships obtained between parameter...
Tadmor is a Syrian barley landrace that has adapted to semi‐arid environments. Its leaves are pale green because of 30% decrease in the chlorophyll and carotenoid content chloroplasts (leading 7·5% light absorption) compared with genotypes not harsh Mediterranean climatic conditions (e.g. Plaisant). This difference pigment was attenuated during growth plants strong light, but strongly amplified when combined high temperature. The low associated significant changes distribution between...
Abstract Oleoyl‐CoA elongase catalyzes four successive reactions: condensation of malonyl‐CoA to oleoyl‐CoA, reduction, dehydration, and another reduction. Evidence supporting this mechanism the multienzymatic nature elongation complex are reported. A particulate membrane fraction from rapeseed is able elongate intermediates ( R,S ) 3‐hydroxy‐20∶0‐CoA E 2,3–20∶1‐CoA very long chain fatty acids in presence malonyl‐CoA. Studies 3‐ketoacyl‐CoA synthase activities showed that maximal activity...
niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français étrangers, laboratoires publics privés.
Abstract Acyl‐CoA elongases are important in producing high‐erucic acid rapeseed. The effects of Triton X‐100, N ‐octyl‐β‐D‐glucopyranoside and deoxycholate on the C18:1‐CoA C20:1‐CoA elongase(s) have been studied by using a 15,000 × g pellet from developing synthesis very long chain monounsaturated fatty acids (VLCMFA) and, particular, that erucic were stimulated whatever substrate used. In presence ‐octyl‐β‐D‐glucopyranoside, elongase activity was practically unchanged, whereas strongly...