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Registros recuperados: 14
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A role for auxin redistribution in the responses of the root system architecture to phosphate starvation in Arabidopsis Inra
Nacry, P.; Canivenc, G.; Muller, B.; Azim, A.; Van Onckelen, H.; Rossignol, M.; Doumas, P..
The changes in root system architecture (RSA) triggered by phosphate (P) deprivation were studied in Arabidopsis (Arabidopsis thaliana) plants grown for 14 d on 1 mM or 3 mM P. Two different temporal phases were observed in the response of RSA to low P. First, lateral root (LR) development was promoted between days 7 and 11 after germination, but, after day 11, all root growth parameters were negatively affected, leading to a general reduction of primary root ( PR) and LR lengths and of LR density. Low P availability had contrasting effects on various stages of LR development, with a marked inhibition of primordia initiation but a strong stimulation of activation of the initiated primordia. The involvement of auxin signaling in these morphological changes...
Tipo: Journal Article Palavras-chave: CARENCE EN PHOSPHATE; CROISSANCE RACINAIRE; CONTROLE HORMONAL; MORPHOLOGIE RACINAIRE PHOSPHORUS DEFICIENCY.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007df2073ce&uri=/notices/prodinra1/2007/02/
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Activation of a nuclear localized-SIPK in tobacco cells challenged by cryptogein, an elicitor of plant defence reactions Inra
Dahan, J.; Pichereaux, C.; Rossignol, M.; Blanc, S.; Wendehenne, D.; Pugin, A.; Bourque, S..
When a plant cell is challenged by a well-defined stimulus, complex signal transduction pathways are activated to promote the modulation of specific sets of genes and eventually to develop adaptive responses. In this context, protein phosphorylation plays a fundamental role through the activation of multiple protein kinase families. Although the involvement of protein kinases at the plasma membrane and cytosolic levels are now well-documented, their nuclear counterparts are still poorly investigated. In the field of plant defence reactions, no known study has yet reported the activation of a nuclear protein kinase and/or its nuclear activity in plant cells, although some protein kinases, e.g. MAPK (mitogen-activated protein kinase), are known to be...
Tipo: Journal Article Palavras-chave: PLANTE; CRYPTOGEINE; ELICITEUR CRYTOGEIN; PLANT DEFENCE; PROTEIN KINASE; SALICYLIC ACID-INDUCED PROTEIN KINASE (SIPK); TOBACCO CELL.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011b44b44d&uri=/notices/prodinra1/2011/05/
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Different impact of staining procedures using visible stains and fluorescent dyes for large-scale investigation of proteomes by MALDI-TOF mass spectrometry Inra
Chevalier, F.; Centeno, D.; Rofidal, V.; Tauzin, M.; Martin, O.; Sommerer, N.; Rossignol, M..
Replicate 2-D gels were stained with four visible or fluorescent dyes using published procedures, and48 co-detected spots were selected for contrasting values in abundance, Mr and p I. Success rate ofidentification and sequence coverage were affected in a dye-dependent manner by the three parameters.Frequency of missed cleavages and recovery of sulfur-containing peptides also depended on the dye.Finally, the dataset was used to predict the number of proteins identifiable when integrating thedifferential contribution of each parameter. Sypro Ruby appeared to combine several favorablefeatures: no dependence of the identification rate upon the physicochemical properties of proteins,no impact on frequency of missed cleavages, and a higher predicted...
Tipo: Journal Article Palavras-chave: VISIBLE STAINING; FLUORESCENT DYES; PEPTIDE MASS FINGERPRINT; PROTEIN IDENTIFICATION; SEQUENCE COVERAGE; PROTEIN PROPERTIES; MISSED CLEAVAGES.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200855bb4aa4&uri=/notices/prodinra1/2008/04/
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Excreted/secreted proteins from Trypanosome procyclic strains Inra
Nten, C.M.A.; Sommerer, N.; Rofidal, V.; Hirtz, C.; Rossignol, M.; Cuny, G.; Peltier, J.B.; Geiger, A..
Trypanosoma secretome was shown to be involved in parasite virulence and is suspected of interfering in parasite life-cycle steps such as establishment in the Glossina midgut, metacyclogenesis. Therefore, we attempted to identify the proteins secreted by procyclic strains of T. brucei gambiense and T. brucei brucei, responsible for human and animal trypanosomiasis, respectively. Using mass spectrometry, 427 and 483 nonredundant proteins were characterized in T. brucei brucei and T. brucei gambiense secretomes, respectively; 35% and 42% of the corresponding secretome proteins were specifically secreted by T. brucei brucei and T. brucei gambiense, respectively, while 279 proteins were common to both subspecies. The proteins were assigned to 12 functional...
Tipo: Journal Article Palavras-chave: TRYPANOSOME; SECRETOME; TRANSMISSION; MOUCHE TSE-TSE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201013996fd2&uri=/notices/prodinra1/2010/08/
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Exocytosis and protein secretion in Trypanosoma Inra
Geiger, A.; Hirtz, C.; Becue, T.; Bellard, E.; Centeno, D.; Gargani, D.; Rossignol, M.; Cuny, G.; Peltier, J.B..
Background: Human African trypanosomiasis is a lethal disease caused by the extracellular parasite Trypanosoma brucei. The proteins secreted by T. brucei inhibit the maturation of dendritic cells and their ability to induce lymphocytic allogenic responses. To better understand the pathogenic process, we combined different approaches to characterize these secreted proteins.Results: Overall, 444 proteins were identified using mass spectrometry, the largest parasite secretome described to date. Functional analysis of these proteins revealed a strong bias toward folding and degradation processes and to a lesser extent toward nucleotide metabolism. These features were shared by different strains of T. brucei, but distinguished the secretome from published T....
Tipo: Journal Article Palavras-chave: TRYPANOSOME; SPECTROMETRIE DE MASSE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20106a992200&uri=/notices/prodinra1/2010/08/
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L'activité hors de France des palynologues et paléobotanistes français du Quaternaire IRD
Rossignol, M.; Maley, Jean.
Tipo: Text Palavras-chave: PALEOBOTANIQUE; PALYNOLOGIE; RECHERCHE SCIENTIFIQUE; PHYTOGEOGRAPHIE; QUATERNAIRE.
Ano: 1969 URL: http://www.documentation.ird.fr/hor/fdi:14177
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Multiple phosphorylations in the C-terminal tail of plant plasma membrane aquaporins : role in sub-cellular trafficking of AtPIP2;1 in response to salt stress Inra
Prak, S.; Hem, S.; Boudet, J.; Viennois, G.; Sommerer, N.; Rossignol, M.; Maurel, C.; Santoni, V..
Aquaporins form a family of water and solute channel proteins and are present in most living organisms. In plants, aquaporins play an important role in the regulation of root water transport in response to abiotic stresses. In this work, we investigated the role of phosphorylation of Plasma membrane Intrinsic Protein (PIP) aquaporins in the Arabidopsis thaliana root by a combination of quantitative mass spectrometry and cellular biology approaches. A novel phosphoproteomic procedure that involves plasma membrane purification, phosphopeptide enrichment with TiO2 columns, and systematic mass spectrometry sequencing revealed multiple and adjacent phosphorylation sites in the C-terminal tail of several AtPIPs. Six of these sites had not been previously...
Tipo: Journal Article Palavras-chave: AQUAPORIN; CHANNEL PROTEINS; WATER TRANSPORT; PLASMA MEMBRANE; SALT STRESS.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009724b97eb&uri=/notices/prodinra1/2010/09/
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Novel subsets of the Arabidopsis plasmalemma phosphoproteome identify phosphorylation sites in secondary active transporters Inra
Hem, S.; Rofidal, V.; Sommerer, N.; Rossignol, M..
The generation of novel subsets of phosphorylation sites is needed to complement the present Arabidopsis plasma membrane phosphoproteinrepertoire, where several families of proteins are under-represented. In this work, different combinations of chromatographicsteps were first compared for capacity to resolve model phosphopeptides before characterisation from PSD fragments in MALDI MS/MS. Nearly half of the phosphorylation sites detected in the Arabidopsis plasmalemma using the optimised procedure were novel, andtwo-thirds of protein accessions identified secondary active transporters. These included phosphate/H+ symporters, ammonium andnitrate transporters, different alkali cation exchangers, a urea/H+ symporter, a glucose transporter, a purine permease,...
Tipo: Journal Article Palavras-chave: ARABIDOPSIS; PLASMA MEMBRANE; SOS1; PHOSPHOPEPTIDE; SECONDARY ACTIVE TRANSPORTER; AMT1.1; CHX17; DUR3; PHT1.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200861196512&uri=/notices/prodinra1/2008/05/
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Quantitative Proteomics Reveals a Dynamic Association of Proteins to Detergent-resistant Membranes upon Elicitor Signaling in Tobacco Inra
Stanislas, T.; Bouyssie, D.; Rossignol, M.; Vesa, S.M.; Fromentin, J.; Morel, J.; Pichereaux, C.; Plas Simon, F.; Monsarrat, B..
A large body of evidence from the past decade supports the existence, in membrane from animal and yeast cells, of functional microdomains playing important roles in protein sorting, signal transduction, or infection by pathogens. In plants, as previously observed for animal microdomains, detergent-resistant fractions, enriched in sphingolipids and sterols, were isolated from plasma membrane. A characterization of their proteic content revealed their enrichment in proteins involved in signaling and response to biotic and abiotic stress and cell trafficking suggesting that these domains were likely to be involved in such physiological processes. In the present study, we used 14N/15N metabolic labeling to compare, using a global quantitative proteomics...
Tipo: Journal Article Palavras-chave: ELICITEUR.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011b4dcb8b0&uri=/notices/prodinra1/2011/05/
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Rôle des facteurs climatiques sur la sélection naturelle de la structure des populations de Phyllanthus urinaria en Guyane IRD
Bancilhon-Rossignol, L.; Rossignol, M.; Haicour, R.; Monniaux, Guy.
Tipo: Text Palavras-chave: AMELIORATION DES PLANTES; RESSOURCES VEGETALES SPONTANEES; GENETIQUE DE POPULATION; BIOMETRIE; ETUDE COMPARATIVE; ANALYSE STATISTIQUE; FACTEUR ECOLOGIQUE; TEMPERATURE; HUMIDITE RELATIVE; ETUDE EXPERIMENTALE; MODELE MATHEMATIQUE; PHYLLANTHUS URINARIA.
Ano: 1978 URL: http://www.documentation.ird.fr/hor/fdi:00303
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Secretome of animal trypanosomes from a standard method toward new diagnostic and therapeutic targets Inra
Holzmuller, P.; Grébaut, P.; Peltier, J.B.; Brizard, J.P.; Perrone, T.; Gonzatti, M.; Bengaly, Z.; Rossignol, M.; Aso, P.M.; Vincendeau, P.; Cuny, G.; Boulangé, A.; Frutos, R..
Animal trypanosomosis is one of the most severe constraints to agricultural development in sub-Saharan Africa and is also an important disease of livestock in Latin America and Asia. The causative agents are various species of protozoan parasites belonging to the genus Trypanosoma, among which T. congolense and T. evansi are the major pathogenic species. The extracellular position of trypanosomes obliges us to consider both the parasite and its excreted/secreted factors in the course of the physiopathologic process. The advent of proteomics led us to propose a comparative approach of the proteome (i.e., the whole parasite content) and the secretome (i.e., naturally excreted/secreted molecules) of T. congolense and T. evansi with particular attention to...
Tipo: Conference Paper Palavras-chave: ANIMAL TRYPANOSOMOSIS; SECRETOME; VIRULENCE; PATHOGENICITY; PROTEOMICS; DIAGNOSIS; DRUG TARGETS.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201021915a35&uri=/notices/prodinra1/2010/08/
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Sur la présence d'ebriédiens dans le plancton de la baie de Pointe-Noire (A. E. F.) ArchiMer
Rossignol, M..
The Ebridians, marine planktonic flagellates with an internal siliceous skeleton, used to be very numerous in the Tertiary era but are only represented nowadays by two genera: "Ebria" Borgert (1891) and "Hermesinum" Zacharias (1906). Found successively in the Baltic Sea, the North Sea, the Mediterranean Sea, the northern Pacific Ocean, the northern and southern Atlantic Ocean, they had never been observed in tropical seas. Consequently, they were considered as cold or temperate water organisms. Their presence on the western African coast, at latitude 4° 48' S, in addition to extending their distribution area, seems to invalidate this point of view. Without drawing any hasty conclusion, it seemed interesting to recall their appearance in the Bay of...
Tipo: Text
Ano: 1956 URL: http://archimer.ifremer.fr/doc/1956/publication-4679.pdf
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The effect of environmental salinity on the proteome of the sea bass (Dicentrarchus labrax L.) Inra
Ky, C.L.; de Lorgeril, J.; Hirtz, C.; Sommerer, N.; Rossignol, M.; Bonhomme, F..
The European sea bass, Dicentrarchus labrax L., tolerates a range of salinities from freshwater to hyper-saline. To study differences in protein expression, fish were reared in both freshwater and seawater. After 3-month acclimation, gill and intestine epithelia were collected and the soluble protein extracted. In all, 362 spots were differentially expressed in the gills and intestines of fishes reared in seawater compared to those from freshwater. Fifty differential protein spots were excised from a colloidal Coomassie-stained gel. Nine separate protein spots were identified unambiguously by mass spectrometry and database searching. Among the six proteins over-expressed in gill cells in seawater, five were cytoskeleton proteins and one was the aromatase...
Tipo: Journal Article Palavras-chave: MALDI-TOF MASS SPECTROMETRY; REAL TIME PCR; SALINITY; SEA BASS; TWO-DIMENSIONAL GEL ELECTROPHORESIS.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008f070b07f&uri=/notices/prodinra1/2008/04/
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The plasma membrane proteome of Saccharomyces cerevisiae and its response to the antifungal calcofluor Inra
Delom, F.; Szponarski, W.; Sommerer, N.; Boyer, J.C.; Bruneau, J.M.; Rossignol, M.; Gibrat, R..
Calcofluor is an antifungal compound known to induce structural perturbations of the cell wall by interfering with the synthesis of chitin microfibril. Proteins from a stripped plasma membrane fraction were solubilized with the neutral and non-denaturing detergent, the n-dodecyl beta-D-maltoside. Proteins were then resolved using a recently described ion-exchange chromatography (IEC)/lithium dodecyl sulfate (LDS)-PAGE procedure. Nearly 90 proteins were identified and clustered, based on their pI, molecular weight, abundance and/or hydrophobicity. This method was then applied to profile the plasma membrane response to calcofluor. The LDS-PAGE patterns obtained from whole plasma membrane proteins were similar for the non-treated and calcofluor-treated...
Tipo: Journal Article Palavras-chave: PROTEINE MEMBRANAIRE CELL WALL; LIQUID CHROMATOGRAPHY; PLASMA MEMBRANE PROTEINS; SACCHAROMYCES CEREVISIAE.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20072157644e&uri=/notices/prodinra1/2007/04/
Registros recuperados: 14
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