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3 results on '"A.-L. Lesage"'

1. Portraying the Hosts: Stellar Science From Planet Searches

Author

Rojas-Ayala, B., Boisse, I., Muirhead, P., Binks, A., Dittmann, J. A., F Donati, J., Fleming, Scott W., A-L, Lesage, Julien Morin, Raetz, S., CAUP, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Boston University [Boston] (BU), Keele University, Harvard-Smithsonian Center for Astrophysics (CfA), Smithsonian Institution-Harvard University [Cambridge], Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), STScI, Leiden University, Laboratoire Univers et Particules de Montpellier (LUPM), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Agence Spatiale Européenne (ESA), European Space Agency (ESA), G. van Belle and H.C. Harris, Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Harvard University [Cambridge]-Smithsonian Institution, Harvard University-Smithsonian Institution, Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Universiteit Leiden, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Agence Spatiale Européenne = European Space Agency (ESA)

Subjects
[SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

International audience; We present a compendium of the splinter session on stellar science from planet searches that was organized as part of the Cool Stars 18 conference. Seven speakers discussed techniques to infer stellar information from radial velocity, transit and microlensing data, as well as new instrumentation and missions designed for planet searches that will provide useful for the study of the cool stars.

Published
2014

2. The recessive potyvirus resistance gene pot-1 is the tomato orthologue of the pepper pvr2-eIF4E gene

Author

M. L. Lesage, Sandrine Ruffel, Jean-Luc Gallois, Carole Caranta, Génétique et Amélioration des Fruits et Légumes (GAFL), and Institut National de la Recherche Agronomique (INRA)

Subjects
0106 biological sciences, Genetic Linkage, Protein Conformation, [SDV]Life Sciences [q-bio], Potyvirus, 01 natural sciences, Lycopersicon, Protein Structure, Secondary, PVY, Plant Viruses, Solanum lycopersicum, Gene Expression Regulation, Plant, TOBACCO ETCH VIRUS, ComputingMilieux_MISCELLANEOUS, Plant Proteins, Genetics, 0303 health sciences, Genome, biology, Tobacco etch virus, Reverse Transcriptase Polymerase Chain Reaction, food and beverages, Chromosome Mapping, General Medicine, Potato virus Y, Multigene Family, Capsicum, Polymorphism, Restriction Fragment Length, DNA, Complementary, DNA, Plant, Genotype, Molecular Sequence Data, Locus (genetics), Genes, Plant, 03 medical and health sciences, Open Reading Frames, Gene mapping, Pepper, Genetic Predisposition to Disease, Amino Acid Sequence, Molecular Biology, Gene, 030304 developmental biology, Plant Diseases, Polymorphism, Genetic, Models, Genetic, fungi, Genetic Complementation Test, BIOLOGIE MOLECULAIRE, biology.organism_classification, Immunity, Innate, Eukaryotic Initiation Factor-4E, TEV, 010606 plant biology & botany
Abstract

The translation initiation factor 4E (eIF4E) has been implicated in naturally occurring resistance to Potato virus Y (PVY) determined by the pvr2 locus in pepper (Capsicum annuum). Here, the molecular basis of the recessive resistance to PVY and Tobacco etch virus (TEV) controlled by the pot-1 locus in tomato (Lycopersicon esculentum; now Solanum lycopersicum) was investigated. On the basis of genetic mapping data that indicated that pot-1 and pvr2 are located in syntenic regions of the tomato and pepper genomes, the possible involvement of eIF4E in pot-1-mediated resistance was assessed. Genetic mapping of members of the eIF4E multigenic family in tomato introgression lines revealed that an eIF4E locus indeed maps in the same genomic region as pot-1. By comparing eIF4E coding sequences between resistant and susceptible Lycopersicon genotypes, a small number of polymorphisms that co-segregate with the pot-1 locus were identified, suggesting that this gene could be involved in resistance to potyviruses. Functional complementation experiments using Potato virus X-mediated transient expression of eIF4E from a susceptible genotype in a resistant pepper genotype confirmed that a small number of amino acid substitutions in the eIF4E protein indeed account for resistance/susceptibility to both the PVY and TEV, and consequently that pot-1 and pvr2 are orthologues. Taken together, these results support the role of this eIF4E gene as a key component of recessive resistance to potyviruses, and validate the comparative genomic approach for the molecular characterization of recessive resistance genes.

Published
2005

3. Influence de la teneur en NaCI et de la durée d'affinage sur les caractéristiques sensorielles d'un fromage type camembert enrichi en magnésium

Author

Denis Lorient, Andrée Voilley, F. Sauvageot, L. Lesage, and Revues Inra, Import

Subjects
[SDV.AEN] Life Sciences [q-bio]/Food and Nutrition, [SDV.IDA] Life Sciences [q-bio]/Food engineering, ComputingMilieux_MISCELLANEOUS, Food Science
Abstract

Resume L'influence de la teneur en chlorure de sodium (0, 0,4, 0,8 et 2,1%) et de la duree d'affinage (22, 40 et 55 jours) a ete etudiee sur un fromage type camembert enrichi en chlorure de magnesium. Le profil sensoriel, determine a l'aide de la norme AFNOR, comprend 44 termes. L'aspect et la texture des fromages a teneur en NaCI egale a 0%, 0,4% et 0,8% sont fortement modifies au cours de l'affinage, alors que pour une teneur en NaCI de 2,1% l'affinage a peu d'effet. L'odeur et la flaveur evoluent au cours de la maturation pour toutes les teneurs en NaCI. Le fromage dont la teneur en NaCI est egale a 0,8% est percu comme different des autres fromages. L'addition de magnesium entraine une augmentation de la proteolyse quelle que soit la teneur en NaCI des fromages et agit sur la texture des fromages.

Published
1992

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