References of "Périlleux, Claire"
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See detailOptimization of the Production of the Amyloidogenic Variants of Human Lysozyme
Menzer, Linda ULg; Tocquin, Pierre ULg; Dony, Nicolas et al

Poster (2008, February 16)

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See detailPartenariat F.N.P.S.M.S. - ULg / Rapport d'activité ULg 2007
Périlleux, Claire ULg; Van Kerkhoven, Fabrizio; Jennès, Nicolas et al

Report (2008)

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See detailA Temperature-sensitive mutation in the Arabidopsis thaliana phosphomannomutase gene disrupts protein glycosylation and triggers cell death.
Hoeberichts, Frank A; Vaeck, Elke; Kiddle, Guy et al

in Journal of Biological Chemistry (2008), 283(9), 5708-18

Eukaryotic phosphomannomutases (PMMs) catalyze the interconversion of mannose 6-phosphate to mannose 1-phosphate and are essential to the biosynthesis of GDP-mannose. As such, plant PMMs are involved in ... [more ▼]

Eukaryotic phosphomannomutases (PMMs) catalyze the interconversion of mannose 6-phosphate to mannose 1-phosphate and are essential to the biosynthesis of GDP-mannose. As such, plant PMMs are involved in ascorbic acid (AsA) biosynthesis and N-glycosylation. We report on the conditional phenotype of the temperature-sensitive Arabidopsis thaliana pmm-12 mutant. Mutant seedlings were phenotypically similar to wild type seedlings when grown at 16-18 degrees C but died within several days after transfer to 28 degrees C. This phenotype was observed throughout both vegetative and reproductive development. Protein extracts derived from pmm-12 plants had lower PMM protein and enzyme activity levels. In vitro biochemical analysis of recombinant proteins showed that the mutant PMM protein was compromised in its catalytic efficiency (K cat/K m). Despite significantly decreased AsA levels in pmm-12 plants, AsA deficiency could not account for the observed phenotype. Since, at restrictive temperature, total glycoprotein patterns were altered and glycosylation of protein-disulfide isomerase was perturbed, we propose that a deficiency in protein glycosylation is responsible for the observed cell death phenotype. [less ▲]

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See detailRevisiting the involvement of SELF-PRUNING in the sympodial growth of tomato.
Thouet, Johanna ULg; Quinet, Muriel; Ormenese, Sandra ULg et al

in Plant Physiology (2008), 148(1), 61-4

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See detailVernalization-induced repression of FLOWERING LOCUS C stimulates flowering in Sinapis alba and enhances plant responsiveness to photoperiod.
D'Aloia, Maria ULg; Tocquin, Pierre ULg; Périlleux, Claire ULg

in New Phytologist (2008), 178(4), 755-65

Of the Brassicaceae, Sinapis alba has been intensively studied as a physiological model of induction of flowering by a single long day (LD), while molecular-genetic analyses of Arabidopsis thaliana have ... [more ▼]

Of the Brassicaceae, Sinapis alba has been intensively studied as a physiological model of induction of flowering by a single long day (LD), while molecular-genetic analyses of Arabidopsis thaliana have disclosed complex interactions between pathways controlling flowering in response to different environmental cues, such as photoperiod and vernalization. The vernalization process in S. alba was therefore analysed here. The coding sequence of S. alba SaFLC, which is orthologous to the A. thaliana floral repressor FLOWERING LOCUS C, was isolated and the transcript levels quantified in different conditions. Two-week-old seedlings grown in noninductive short days (SDs) were vernalized for 1-6 wk. Down-regulation of SaFLC was already marked after 1 wk of cold but 2 wk was needed for a significant acceleration of flowering. Flower buds were initiated during vernalization. When vernalization was stopped after 1 wk, repression of SaFLC was not stable but a significant increase in plant responsiveness to 16-h LDs was observed when LDs followed immediately after the cold treatment. These results suggest that vernalization does not only work when plants experience long exposure to cold during the winter: shorter cold periods might stimulate flowering of LD plants if they occur when photoperiod is increasing, such as in spring. [less ▲]

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See detailPas si zen: des plantes de maïs stressées sont placées sous haute surveillance
Périlleux, Claire ULg

Article for general public (2008)

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See detailLes plantes ont-elles un quota de CO2 fixé ?
Périlleux, Claire ULg

Article for general public (2008)

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See detailStability of SaFLC repression in Sinapis alba. A link with quantitative effect of vernalization
D'Aloia, Maria ULg; Périlleux, Claire ULg

in Plant Signaling & Behavior (2008), 3(11), 1002-1004

In Arabidopsis thaliana, vernalization promotes flowering by repressing the floral inhibitor FLOWERING LOCUS C (AtFLC). This repression is mediated through epigenetic modifications at the AtFLC locus ... [more ▼]

In Arabidopsis thaliana, vernalization promotes flowering by repressing the floral inhibitor FLOWERING LOCUS C (AtFLC). This repression is mediated through epigenetic modifications at the AtFLC locus, leading to gene silencing. Whether the well-known quantitative effect of vernalization is due to the degree of AtFLC repression and/or its stability after return to normal temperature conditions has not been clarified. Here, we examine this question in white mustard, Sinapis alba, taking advantage of our recent cloning of the AtFLC ortholog SaFLC. [less ▲]

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See detailPartenariat F.N.P.S.M.S. - ULg / Rapport d'activité ULg 2006
Périlleux, Claire ULg; Van Kerkoven, Fabrizio; Jennès, Nicolas

Report (2007)

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See detailRapport final ARAPONIC - First spin-off n°315461
Tocquin, Pierre ULg; Périlleux, Claire ULg

Report (2007)

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See detailPlant-based production of human lysozyme mutants
Tocquin, Pierre ULg; Dumoulin, Mireille ULg; Dony, Nicolas ULg et al

Poster (2007)

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See detailControl of floral transition in maize
Van Kerkhoven, Fabrizio ULg; Jennès, Nicolas; Périlleux, Claire ULg

in Comparative Biochemistry & Physiology Part A : Molecular & Integrative Physiology (2006), 143(4), 170

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See detailCloning of CONSTANS and FLOWERING LOCUS T in Sinapis alba.
Tamseddak, Karim; D'Aloia, Maria ULg; Périlleux, Claire ULg

in Comparative Biochemistry & Physiology Part A : Molecular & Integrative Physiology (2006), 143A

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See detailGenetical control of sympodial growth and flowering in tomato
Thouet, Johanna ULg; Ormenese, Sandra ULg; Périlleux, Claire ULg

in Comparative Biochemistry & Physiology Part A : Molecular & Integrative Physiology (2006), 143(4), 170-171

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See detailPartenariat F.N.P.S.M.S. - ULg / Rapport d'activité ULg 2005
Périlleux, Claire ULg; Van Kerkhoven, Fabrizio; Jennès, Nicolas

Report (2006)

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See detailCytokinin application to the shoot apical meristem of Sinapis alba enhances secondary plasmodesmata formation.
Ormenese, Sandra ULg; Bernier, Georges ULg; Périlleux, Claire ULg

in Planta (2006), 224(6), 1481-4

A single application of cytokinin benzyladenine causes a threefold increase in the frequency of plasmodesmata in the vegetative shoot apical meristem (SAM) of Sinapis alba plants. This increase is ... [more ▼]

A single application of cytokinin benzyladenine causes a threefold increase in the frequency of plasmodesmata in the vegetative shoot apical meristem (SAM) of Sinapis alba plants. This increase is observed 20 h after application within all cell layers (L1, L2, L3) as well as at the interfaces between these layers. Evidence is presented indicating that cytokinin promotes mainly the formation of new secondary plasmodesmata. A similar increase in the frequency of secondary plasmodesmata was observed in the Sinapis SAM during the floral transition induced by a single long day, suggesting that this effect of the long day is mediated by cytokinin. [less ▲]

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See detailAcclimation of Arabidopsis thaliana to long-term CO2 enrichment and nitrogen supply is basically a matter of growth rate adjustment
Tocquin, Pierre ULg; Ormenese, Sandra ULg; Pieltain, Alexandra ULg et al

in Physiologia Plantarum (2006), 128(4), 677-688

The long-term response of Arabidopsis thaliana to increasing CO2 was evaluated in plants grown in 800 mu l 1(-1) CO2 from sowing and maintained, in hydroponics, on three nitrogen supplies: "low," "medium ... [more ▼]

The long-term response of Arabidopsis thaliana to increasing CO2 was evaluated in plants grown in 800 mu l 1(-1) CO2 from sowing and maintained, in hydroponics, on three nitrogen supplies: "low," "medium" and "high." The global response to high CO2 and N-supply was evaluated by measuring growth parameters in parallel with photosynthetic activity, leaf carbohydrates, ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) messenger RNA and protein, stomatal conductance (g(s)) and density. CO2 enrichment was found to stimulate biomass production, whatever the N-supply. This stimulation was transient on low N-supply and persisted throughout the whole vegetative growth only in high N-supply. Acclimation on low N-high CO2 was not associated with carbohydrate accumulation or with a strong reduction in Rubisco amount or activity. At high N-supply, growth stimulation by high CO2 was mainly because of the acceleration of leaf production and expansion while other parameters such as specific leaf area, root/shoot ratio and g, appeared to be correlated with total leaf area. Our results thus suggest that, in strictly controlled and stable growing conditions, acclimation of A. thaliana to longterm CO2 enrichment is mostly controlled by growth rate adjustment. [less ▲]

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