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62. Physiological Targets of Artificial Gravity: The Cardiovascular System

Author

Antonutto, Guglielmo, Clément, Gilles, Ferretti, Guido, Linnarsson, Dag, Traon, Anne Pavy-Le, Di Prampero, Pietro, Wertz, James R., editor, Doré, Roland, editor, Larson, Wiley J., editor, Logsdon, Tom, editor, Markley, Landis, editor, Melton, Robert G., editor, Ninomiya, Keiken, editor, Pocha, Jehangir J., editor, Shuster, Malcolm D., editor, Squibb, Gael, editor, Sweeting, Martin, editor, Clément, Gilles, editor, and Bukley, Angie, editor

Published
2007
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63. Physiological Targets of Artificial Gravity: The Sensory-Motor System

Author

Groen, Eric, Clarke, Andrew, Bles, Willem, Wuyts, Floris, Paloski, William, Clément, Gilles, Wertz, James R., editor, Doré, Roland, editor, Larson, Wiley J., editor, Logsdon, Tom, editor, Markley, Landis, editor, Melton, Robert G., editor, Ninomiya, Keiken, editor, Pocha, Jehangir J., editor, Shuster, Malcolm D., editor, Squibb, Gael, editor, Sweeting, Martin, editor, Clément, Gilles, editor, and Bukley, Angie, editor

Published
2007
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64. Physics of Artificial Gravity

Author

Bukley, Angie, Paloski, William, Clément, Gilles, Wertz, James R., editor, Doré, Roland, editor, Larson, Wiley J., editor, Logsdon, Tom, editor, Markley, Landis, editor, Melton, Robert G., editor, Ninomiya, Keiken, editor, Pocha, Jehangir J., editor, Shuster, Malcolm D., editor, Squibb, Gael, editor, Sweeting, Martin, editor, Clément, Gilles, editor, and Bukley, Angie, editor

Published
2007
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65. Recommended Research

Author

Vernikos, Joan, Paloski, William, Fuller, Charles, Clèment, Gilles, Wertz, James R., editor, Doré, Roland, editor, Larson, Wiley J., editor, Logsdon, Tom, editor, Markley, Landis, editor, Melton, Robert G., editor, Ninomiya, Keiken, editor, Pocha, Jehangir J., editor, Shuster, Malcolm D., editor, Squibb, Gael, editor, Sweeting, Martin, editor, Clément, Gilles, editor, and Bukley, Angie, editor

Published
2007
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66. The Gravity Of The Situation

Author

Clément, Gilles, Bukley, Angie, Paloski, William, Wertz, James R., editor, Doré, Roland, editor, Larson, Wiley J., editor, Logsdon, Tom, editor, Markley, Landis, editor, Melton, Robert G., editor, Ninomiya, Keiken, editor, Pocha, Jehangir J., editor, Shuster, Malcolm D., editor, Squibb, Gael, editor, Sweeting, Martin, editor, Clément, Gilles, editor, and Bukley, Angie, editor

Published
2007
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67. History of Artificial Gravity

Author

Clément, Gilles, Bukley, Angie, Paloski, William, Wertz, James R., editor, Doré, Roland, editor, Larson, Wiley J., editor, Logsdon, Tom, editor, Markley, Landis, editor, Melton, Robert G., editor, Ninomiya, Keiken, editor, Pocha, Jehangir J., editor, Shuster, Malcolm D., editor, Squibb, Gael, editor, Sweeting, Martin, editor, Clément, Gilles, editor, and Bukley, Angie, editor

Published
2007
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73. Assessing the effects of artificial gravity in an analog of long-duration spaceflight: The protocol and implementation of the AGBRESA bed rest study

Author

Clément, Gilles, primary, Rittweger, Jörn, additional, Nitsche, Andrea, additional, Doering, Wolfgang, additional, Frings-Meuthen, Petra, additional, Hand, Olga, additional, Frett, Timo, additional, Noppe, Alexandra, additional, Paulke, Freia, additional, Lecheler, Leopold, additional, Jordan, Jens, additional, Stern, Claudia, additional, and Mulder, Edwin, additional

Published
2022
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75. Areas of Research

Author

Aceto, Jessica, Albiol, Joan, Berthier, Audrey, Beysens, Daniel, Boonstra, Johannes, Bradamante, Silvia, Chauveau, Christian, Chouker, Alexander, Clément, Gilles, Colige, Alain C., Comet, Bernard, Damann, Volker, Durante, Marco, Ehrenfreund, Pascale, Fecht, Hans, Hampp, Rüdiger, Hemmersbach, Ruth, Hockey, Bob, Horn, Eberhard, Lambert, Charles A., Leys, Natalie, Lobascio, Cesare, van Loon, Jack J. W. A., Mancuso, Stefano, Medina, Francisco Javier, Morfill, Greg, Muller, Marc, Nusgens, Betty V., Perino, Maria Antonietta, Reitz, Günther, Rothkaehl, Hanna, Sandal, Gro Mjeldheim, Vico, Laurence, Westall, Frances, Beysens, Daniel, editor, Carotenuto, Luigi, editor, van Loon, Jack J.W.A., editor, and Zell, Martin, editor

Published
2011
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83. Carbon and nitrogen remobilization during seed filling in Arabidopsis is strongly impaired in the pyrroline-5-carboxylate dehydrogenase mutant.

Author

Dourmap, Corentin, Marmagne, Anne, Lebreton, Sandrine, Clément, Gilles, Guivarc'h, Anne, Savouré, Arnould, and Masclaux-Daubresse, Céline

Subjects
SEED development, SEED yield, SUPPLY & demand, NITROGEN, AMINO acids, GERMINATION
Abstract

Proline is an amino acid that is degraded in the mitochondria by the sequential action of proline dehydrogenase (ProDH) and pyrroline-5-carboxylate dehydrogenase (P5CDH) to form glutamate. We investigated the phenotypes of Arabidopsis wild-type plants, the knockout prodh1 prodh2 double-mutant, and knockout p5cdh allelic mutants grown at low and high nitrate supplies. Surprisingly, only p5cdh presented lower seed yield and produced lighter seeds. Analyses of elements in above-ground organs revealed lower C concentrations in the p5cdh seeds. Determination of C, N, and dry matter partitioning among the above-ground organs revealed a major defect in stem-to-seed resource allocations in this mutant. Again surprisingly, defects in C, N, and biomass allocation to seeds dramatically increased in high-N conditions. 15N-labelling consistently confirmed the defect in N remobilization from the rosette and stem to seeds in p5cdh. Consequently, the p5cdh mutants produced morphologically abnormal, C-depleted seeds that displayed very low germination rates. The most striking result was the strong amplification of the N-remobilization defects in p5cdh under high nitrate supply, and interestingly this phenotype was not observed in the prodh1 prodh 2 double-mutant irrespective of nitrate supply. This study reveals an essential role of P5CDH in carbon and nitrogen remobilization for reserve accumulation during seed development in Arabidopsis. [ABSTRACT FROM AUTHOR]

Published
2023
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88. The Arabidopsis transcription factor NLP2 regulates early nitrate responses and integrates nitrate assimilation with energy and carbon skeleton supply

Author

Durand, Mickaël, primary, Brehaut, Virginie, additional, Clément, Gilles, additional, Kelemen, Zsolt, additional, Macé, Julien, additional, Feil, Regina, additional, Duville, Garry, additional, Launay-Avon, Alexandra, additional, Roux, Christine Paysant-Le, additional, Lunn, John E., additional, Roudier, François, additional, and Krapp, Anne, additional

Published
2022
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91. Potentialisation de l’efficacité d’un stimulateur de défense par un biostimulant contre le mildiou de la vigne

Author

Jacquens, Lucile, Trouvelot, Sophie, Lemaitre-Guillier, Christelle, Krzyzaniak, Yuko, Clément, Gilles, Citerne, Sylvie, Mouille, Gregory, Moreau, Estelle, Héloir, Marie-Claire, Adrian, Marielle, and EL Mjiyad, Noureddine

Subjects
[SDV] Life Sciences [q-bio], immunité végétale, phénotypage, stimulateur de défenses des plantes, vigne, biostimulant
Abstract

L’induction de résistance des cultures aux maladies par des Stimulateurs de Défenses desPlantes (SDP) est l’une des stratégies envisagées pour réduire l'utilisation des pesticides de synthèse.Cependant, la variabilité de son efficacité au champ freine son développement. L’une des raisons estque, contrairement aux fongicides qui agissent directement sur les agents pathogènes, les SDP sollicitentl'immunité de la plante, dont la performance peut dépendre de son état physiologique. Outre les SDP,d'autres produits utilisés en agriculture, les biostimulants (BS), sont décrits pour améliorer certainesfonctions de la plante. Dans ce contexte, l'objectif de ce travail était de vérifier sur vigne si les BS, vialeurs effets sur la physiologie de la plante, pouvaient constituer des leviers capables d’augmenterl'efficacité des SDP.Afin de vérifier cette hypothèse, nous avons développé une méthodologie expérimentale en conditionscontrôlées, utilisant des vitroplants de vigne et permettant de caractériser les effets de BS. Nous avonstesté les effets d’un BS (extrait végétal). Ajouté au milieu de culture, ce dernier accélère le début de lacroissance des plants et a un impact sur leur développement aérien et racinaire. Il a aussi un effet sur lemétabolome et la teneur en phytohormones des feuilles, des tiges et des racines. Enfin, nous avonstraité par un SDP (autre extrait végétal), par voie foliaire, les vitroplants précédemment biostimulés ounon. Le SDP a également modifié le métabolome et les teneurs en phytohormones des organes, maisdifféremment sur plants biostimulés ou témoins. De plus, il a induit des réponses de défense et uneprotection contre Plasmopara viticola (agent du mildiou) uniquement pour les plants biostimulés.Ces résultats suggèrent un mode d'action similaire à une potentialisation des défenses par le BS utilisé.Ainsi, cette étude a permis, d’une part, de développer une méthodologie adaptée au criblage de BS actifssur la croissance végétative de la vigne (phénotypage aérien et racinaire). D’autre part, elle démontre lapertinence de l'utilisation de biostimulants pour optimiser l'efficacité de SDP. D’autres travaux sontactuellement en cours pour étudier notamment les effets d’autres BS et SDP.

Published
2022

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