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| Registros recuperados: 25 | |
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| Scehovic, J.; Poisson, C.; Gillet, M.. |
| Les études du comportement alimentaire des moutons envers différentes espèces de graminées dans une cafétéria d’auges installée à Lusignan (I.N.R.A.-France) ont permis d’enregistrer, entre autres, l’observation suivante : l’aspersion de la fétuque élevée, espèce peu appétible, avec le jus extrait de ray-grass d’Italie, espèce très appétible, et vice-versa, a eu pour résultat la modification significative du comportement des moutons envers les deux espèces comparées. Etant donné que l’effet de ces interventions s’avérait limité dans le temps, nous en avons déduit la présence de substances volatiles. Afin d’expliquer cette action sur le comportement alimentaire des moutons, nous avons procédé à la détermination de différentes substances chimiques du... |
| Tipo: Journal Article |
Palavras-chave: APPETIBILITE; ANALYSE ORGANOLEPTIQUE; ODEUR. |
| Ano: 1985 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB8619024001679&uri=/notices/prodinra1/2009/02/ |
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| Rospars, J.P.; Lansky, P.; Chaput, M.; Duchamp-Viret, P.. |
| Most olfactory receptor neurons (ORNs) express a single type of olfactory receptor that is differentially sensitive to a wide variety of odorant molecules. The diversity of possible odorant-receptor interactions raises challenging problems for the coding of complex mixtures of many odorants, which make up the vast majority of real world odors. Pure competition, the simplest kind of interaction, arises when two or more agonists can bind to the main receptor site, which triggers receptor activation, although only one can be bound at a time. Noncompetitive effects may result from various mechanisms, including agonist binding to another site, which modifies the receptor properties at the main binding site. Here, we investigated the electrophysiological... |
| Tipo: Journal Article |
Palavras-chave: CODAGE; MODELE; OLFACTION; NEURONE; RECEPTEUR; ODEUR; INTERACTION MOLECULAIRE; CONCENTRATION; ANALYSE STATISTIQUE SENSORY CODING; OLFACTORY RECEPTOR NEURON; IN VIVO; SIGNAL TRANSDUCTION; ALLOSTERY; MIXTURE INTERACTION. |
| Ano: 2008 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20105031bac0&uri=/notices/prodinra1/2010/10/ |
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| Wadhams, L.J.; Blight, M.M.; Kerguelen, V.; Le Metayer, M.; Marion-Poll, F.; Masson, C.; Pham-Delegue, M.H.; Woodcock, C.M.. |
| A novel technique for the simultaneous monitoring of electroan-tennogram (EAG) and conditioned proboscis extension (CPE) responses of honey bees to the effluent from a gas chromatograph (GC) was developed to locate biologically active components in blends of plant volatiles and to investigate odor recognition at the peripheral and behavioral levels. A six-component mixture, comprising compounds previously identified as oilseed rape floral volatiles, was used as the stimulus. Standard CPE and EAG recordings were done as a reference. EAG responses were elicited from unconditioned bees by all the components presented either in the coupled or the standard mode. Conditioned bees gave larger EAG responses than unconditioned bees, suggesting that antennal... |
| Tipo: Journal Article |
Palavras-chave: EXTENSION DU PROBOSCIS; REFLEXE CONDITIONNE; APIS MELLIFERA; APIDAE; DISCRIMINATION OLFACTIVE; ODEUR; ELECTROANTENNOGRAPHIE; CHROMATOGRAPHIE EN PHASE GAZEUSE; TEST BIOLOGIQUE HONEY BEE; APIS MELLIFERA; HYMENOPTERA; APIDAE; GAS CHROMATOGRAPHY; ELECTROANTENNOGRAM; CONDITIONED PROBOSCIS EXTENSION; OLFACTORY DISCRIMINATION. |
| Ano: 1994 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9500025144043436&uri=/notices/prodinra1/2010/11/ |
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| Martin, D.M.; Aubourg, S.; Schouwey, M.B.; Daviet, L.; Schalk, M.; Toub, O.; Lund, S.T.; Bohlmann, J.. |
| Background: Terpenoids are among the most important constituents of grape flavour and wine bouquet, and serve as useful metabolite markers in viticulture and enology. Based on the initial 8-fold sequencing of a nearly homozygous Pinot noir inbred line, 89 putative terpenoid synthase genes (VvTPS) were predicted by in silico analysis of the grapevine (Vitis vinifera) genome assembly [1]. The finding of this very large VvTPS family, combined with the importance of terpenoid metabolism for the organoleptic properties of grapevine berries and finished wines, prompted a detailed examination of this gene family at the genomic level as well as an investigation into VvTPS biochemical functions.Results: We present findings from the analysis of the up-dated 12-fold... |
| Tipo: Journal Article |
Palavras-chave: CHROMATOGRAPHIE; SPECTROMETRIE DE MASSE; CLONAGE; ADNC; METABOLISME SECONDAIRE; PHYLOGENIE; ENZYME; TERPENOIDE; FLAVEUR; ODEUR; CARTOGRAPHIE; PROPRIETE ORGANOLEPTIQUE ENT-COPALYL DIPHOSPHATE; CHROMATOGRAPHY-MASS SPECTROMETRY; SESQUITERPENE SYNTHASES (-)-GERMACRENE-D SYNTHASE SECONDARY METABOLISM ARABIDOPSIS-THALIANA; LIMONENE SYNTHASE ESCHERICHIA-COLI; RESISTANCE GENES; CDNA CLONING. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011fadf0898&uri=/notices/prodinra1/2011/01/ |
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| Laloi, D.; Roger, B.; Blight, M.M.; Wadhams, L.J.; Pham-Delègue, M.H.. |
| Individually restrained worker bees were trained to recognize complex odors in a conditioned proboscis extension assay. Three groups of bees were considered, based on the responses recorded during the experimental procedure: selective learners, nonselective learners, and nonlearners. For conditioning, three concentrations of two synthetic mixtures were used. The distribution of bees between groups was not significantly affected by the nature or by the concentration of the conditioning mixture. After conditioning, bees were tested with the individual compounds, and the responses were analyzed with respect to the three groups. Selective learners showed discriminative responses to a few key compounds, while nonselective learners responded to all the... |
| Tipo: Journal Article |
Palavras-chave: PROBOSCIS; ABEILLE DOMESTIQUE; APIS MELLIFERA; INSECTE UTILE; ODEUR; DIFFERENCIATION; APTITUDE HONEYBEE; LEARNING; PROBOSCIS EXTENSION; OLFACTION; ODOR MIXTURE. |
| Ano: 1999 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0400002758104388&uri=/notices/prodinra1/2010/11/ |
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| Le Bon, A.M.; Tromelin, A.; Thomas-Danguin, T.; Briand, L.. |
| La première étape de la détection olfactive implique l’activation de récepteurs olfactifs par les molécules odorantes. Ces récepteurs sont des protéines membranaires contenues dans la membrane des cils portés par les neurones sensoriels olfactifs localisés dans l’épithélium olfactif. Le codage de l’odeur résulte de l’activation combinatoire d’un ensemble de récepteurs et repose sur leur expression clonale. La connectique neuronale aboutit à la formation, dans le cortex, d’une image sensorielle olfactive qui est perçue consciemment en tant qu’odeur. Ce système combinatoire permet, avec seulement environ 340 récepteurs différents, de discriminer des myriades de molécules odorantes naturelles ou non (nouvelles flaveurs culinaires, molécules de synthèse,... |
| Tipo: Journal Article |
Palavras-chave: CODAGE OLFACTIF; ÉVOLUTION; ODEUR; OLFACTION; RECEPTEURS OLFACTIFS; MELANGES D’ODORANTS EVOLUTION; OLFACTION; ODOUR; ODOUR CODING; OLFACTORY RECEPTORS; ODORANT MIXTURES. |
| Ano: 2008 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20106fc5e9e8&uri=/notices/prodinra1/2011/04/ |
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| Barrozo, R.; Jarriault, D.; Simeone, X.; Gaertner, C.; Gadenne, C.; Anton, S.. |
| In the male moth, Agrotis ipsilon, mating induces a transient inhibition of behavioural and central nervous responses to sex pheromone. Newly mated males are not attracted to sex pheromone, and the sensitivity of their antennal lobe (AL) neurons is lower than in virgin males. This rapid transient olfactory inhibition prevents them from re-mating unsuccessfully until they have refilled their sex glands. We hypothesized that this olfactory ‘switch off’ might be controlled by neuromodulators such as biogenic amines. To test our hypothesis, we studied the effects of octopamine (OA) and serotonin (5-hydroxytryptamine, 5-HT) on the coding properties of pheromone-sensitive AL neurons in virgin and newly mated males. We show that AL neuron sensitivity increased in... |
| Tipo: Journal Article |
Palavras-chave: AGROTIS IPSILON; INSECTE; MITE; OLFACTION; ODEUR; LOBE ANTENNALE; PHEROMONE SEXUELLE; ATTRACTIF SEXUEL; SEROTONINE; PLASTICITE; SYSTEME NERVEUX CENTRAL; NEURONE; RECEPTEUR; OCTOPAMINE; NOCTUIDAE; LEPIDOPTERA OLFACTORY CODING; MOTH; ANTENNAL LOBE; SEX PHEROMONE; PROJECTION NEURON; MATING; OCTOPAMINE; SEROTONIN; PLASTICITY. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010e7ad9fc3&uri=/notices/prodinra1/2010/09/ |
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| Anderson, A.R.; Wanner, K.W.; Trowell, S.C.; Warr, C.G.; Jacquin-Joly, E.; Zagatti, P.; Robertson, H.; Newcomb, R.D.. |
| Males and females of many moth species exhibit important differences in sexual behaviours. Much research in this field has focused on the male-specific behaviour, electrophysiology and molecular biology of sex pheromone reception. Female-specific behaviours have been less well studied although, like male-specific behaviours, they could provide opportunities for intervention and management of lepidopteran pests. Previously, we identified genes encoding putative odorant receptors (ORs) from the genome of the silkworm, Bombyx mori, some of which have higher levels of steady-state transcript in the antennae of adult females compared with males. We have identified the full-length cDNA sequences of some of these ORs and described a novel OR that is part of a... |
| Tipo: Journal Article |
Palavras-chave: TERPENE; ACIDE BENZOIQUE; PHENYLETHANOL; BENZALDEHYDE; ELECTROPHYSIOLOGIE; SEQUENCE NUCLEOTIDIQUE; ODEUR; HYPOTHENEMUS HAMPEI; ARTHROPODA; HEXAPODA; INSECTE; RECEPTEUR; PLANTE; COMPOSE VOLATILE; COMPORTEMENT SEXUEL; ATTRACTIF SEXUEL; ADNC; BIOLOGIE MOLECULAIRE; LEPIDOPTERA BOMBYX MORI; OLFACTION; ODORANT RECEPTORS; PLANT VOLATILES; PHEROMONE. |
| Ano: 2009 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20101ffb559b&uri=/notices/prodinra1/2010/11/ |
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| Chouquet, B.; Lucas, P.; Bozzolan, F.; Solvar, M.; Maïbèche-Coisné, M.; Durand, N.; Debernard, S.. |
| To clarify the role of phospholipase C (PLC) in insect olfactory transduction, we have undertaken its molecular identification in the moth Spodoptera littoralis. From the analysis of a male antennal expressed sequence tag library, we succeeded in cloning a full-length cDNA encoding a PLC that belongs to the cluster of PLC-b subtypes. In adult males, the PLC-b transcript was located predominantly in brain and antennae where its presence was detected in the olfactory sensilla trichodea. Moreover, PLC-b was expressed in antennae at the beginning of the pupal stage, then reached a maximum at the end of this stage and was maintained at this level during the adult period. Taken together, these results provided molecular evidence for the putative participation of... |
| Tipo: Journal Article |
Palavras-chave: INSECTE; PHOSPHOLIPASE; OLFACTION; ODEUR; MITE; TECHNIQUE ANALYTIQUE; SEQUENCE NUCLEOTIDIQUE; EXPRESSION DES GENES; ADNC; TRANSCRIPTION; NORTHERN BLOT; ELECTROPHORESE; PCR; CLONAGE MOLECULAIRE; ANALYSE PHYLOGENETIQUE; LEPIDOPTERA; NOCTUELLE MEDITERRANEENNE EXPRESSION PATTERNS; OLFACTORY SYSTEM; PHOSPHOLIPASE C; SPODOPTERA LITTORALIS; SIGNAL TRANSDUCTION. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20108d7c7c75&uri=/notices/prodinra1/2010/09/ |
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| Wright, G.A.; Mustard, J.A.; Simcock, N.K.; Ross-Taylor, A.A.R.; McNicholas, L.D.; Popescu, A.; Marion-Poll, F.. |
| Avoiding toxins in food is as important as obtaining nutrition. Conditioned food aversions have been studied in animals as diverse as nematodes and humans [1, 2], but the neural signaling mechanisms underlying this form of learning have been difficult to pinpoint. Honeybees quickly learn to associate floral cues with food [3], a trait that makes them an excellent model organism for studying the neural mechanisms of learning and memory. Here we show that honeybees not only detect toxins but can also learn to associate odors with both the taste of toxins and the postingestive consequences of consuming them. We found that two distinct monoaminergic pathways mediate learned food aversions in the honeybee. As for other insect species conditioned with salt or... |
| Tipo: Journal Article |
Palavras-chave: INSECTE; INSECTE UTILE; ALIMENTATION; TOXINE; APPRENTISSAGE; MEMOIRE; ODEUR; OLFACTION; DOPAMINE; SEROTONINE; SYSTME NERVEUX; ABEILLE DOMESTIQUE . |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201034c88ffd&uri=/notices/prodinra1/2011/05/ |
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| Barrozo, R.; Gadenne, C.; Anton, S.. |
| In most animals, male copulation is dependent on the detection and processing of female-produced sex pheromones. In males, a refractory post-ejaculatory interval (PEI) follows copulation, allowing them to avoid direct remating until they have replenished their reproductive tracts. In the moth Agrotis ipsilon, newly mated males show a transient inhibition of behavioral and central nervous responses to sex pheromone. Using nonpheromonal (plant) odors, pheromones and their mixture, we now show that the observed lack of pheromone response originates from differential post-mating odor processing in the brain. Although mated males still respond to plant odors alone, their response to mixtures depends on the added pheromone concentration. Below a specific... |
| Tipo: Journal Article |
Palavras-chave: PLANTE; ODEUR; LOBE ANTENNAIRE; PLASTICITE; ABSTINCENCE SEXUELLE; AGROTIS IPSILON; SYSTEME NERVEUX CENTRAL; COMPORTEMENT; LEPIDOPTERA; INSECTE LEPIDOPTERA; NOCTUIDAE; MOTH; OLFACTION; MATING; PHEROMONE; PLANT ODOUR; ANTENNAL LOBE; PLASTICITY. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010305acd70&uri=/notices/prodinra1/2011/01/ |
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| Laloi, D.; Bailez, O.; Blight, M.M.; Roger, B.; Pham-Delègue, M.H.; Wadhams, L.J.. |
| Complex odor recognition in the honeybee was investigated using two behavioral assays: (1) the conditioning of the proboscis extension (CPE) with restrained individuals, and (2) the observation of foragers visiting an artificial feeder in a flight room. Nine compounds, previously identified as oilseed rape flower volatiles, were tested either individually or in mixtures. Different sets of experiments were done to determine: (1) the acquisition rate of the nine compounds in the CPE assay, and (2) the discrimination of the individual compounds after conditioning to a mixture, using the CPE assay and free-flying foragers. After conditioning to a complex mixture, honeybees established a hierarchy among the components, with some of them accounting for a major... |
| Tipo: Journal Article |
Palavras-chave: FLEUR DE TOURNESOL; ABEILLE DOMESTIQUE; APIS MELLIFERA; INSECTE UTILE; ODEUR; DIFFERENCIATION HONEYBEE; APIS MELLIFERA; HYMENOPTERA; APIDAE; CONDITIONED PROBOSCIS EXTENSION; FREE-FLYING FORAGERS; OLFACTORY DISCRIMINATION; FLORAL VOLATILES. |
| Ano: 2000 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0400002757104387&uri=/notices/prodinra1/2010/11/ |
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| Registros recuperados: 25 | |
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