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46 results on '"Meimoun, P"'

5. Metabolism regulation during salt exposure in the halophyte Cakile maritima

Author

Arbelet-Bonnin, D, Blasselle, C, Palm, E, Redwan, M, Ponnaiah, M, Laurenti, P, Meimoun, P, Gilard, F, Gakière, B, Mancuso, S, El-Maarouf-Bouteau, H, Bouteau, F, Palm, ER, Arbelet-Bonnin, D, Blasselle, C, Palm, E, Redwan, M, Ponnaiah, M, Laurenti, P, Meimoun, P, Gilard, F, Gakière, B, Mancuso, S, El-Maarouf-Bouteau, H, Bouteau, F, and Palm, ER

Abstract

The halophyte Cakile maritima is a Brassicacea that has developed numerous mechanisms for managing salt. In the present study, we analyze the metabolic responses of C. maritima to increasing salt exposure in parallel with growth and photosynthetic parameters. At 10 days, 100 mM NaCl treatment has no effect, whereas 400 mM treatment decreases both growth and photosynthetic capacity. Accordingly, the metabolism was weakly impacted at 100 mM NaCl with an increase in only a few amino acids and sugars, whereas 400 mM treated plants shows noticeable changes: an increase in amino acid abundance, sugars decrease and an organic acid depletion. At 20 days, 400 mM treatment leads to more severe effects on growth and photosynthesis, whereas plant growth remains unaffected by the 100 mM NaCl treatment, despite a reduction in photosynthetic capacity. Plants treated with 400 mM NaCl present an amplified metabolic response with additional metabolites reflecting salt stress as GABA, proline and glycine. One noticeable feature of halophily in C. maritima is the increase in sugar content at low stress whereas longer or higher stress lead to a decrease in sugar content. In high salt conditions the stimulation of amino acid biosynthesis is the main strategy for osmoprotection to cope for salt stress.

Published
2020

25. Assessment of initial left ventricular systolic dysfunction in Tako-Tsubo cardiomyopathy by multimodality imaging

Author

Mansencal, N., primary, Gerbaud, E., additional, Doyen, D., additional, Lesavre, N., additional, Donal, E., additional, Motreff, P., additional, Meimoun, P., additional, Ducrocq, G., additional, Nallet, O., additional, Founier, A., additional, Ederhy, S., additional, Lamblin, N., additional, Varenne, O., additional, Probst, V., additional, Ihaddaden, M., additional, Aupetit, F., additional, and Dubourg, O., additional

Published
2013
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32. 520 Utility of stress echocardiography to confirm stenosis severity and predict outcome in patients with low flow, low gradient aortic stenosis and preserved lv ejection fraction

Author

Clavel, M., primary, Ennezat, P., additional, Maréchaux, S., additional, Dumesnil, J.G., additional, Hachicha, Z., additional, Mathieu, P., additional, Bellouin, A., additional, Bergeron, S., additional, Meimoun, P., additional, Arsenault, M., additional, Tourneau, T. Le, additional, Pasquet, A., additional, Couture, C., additional, Trahan, S., additional, Sackett, M.K., additional, and Pibarot, P., additional

Published
2011
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37. Influence des leucocytes sur la réserve coronaire, la fonction systolique ventriculaire gauche, et les complications hospitalières, dans l’infarctus antérieur aigu traité par angioplastie primaire

Author

Meimoun, P., primary, Elmkies, F., additional, Boulanger, J., additional, Zemir, H., additional, Benali, T., additional, Espanel, C., additional, Clerc, J., additional, Doutrelan, L., additional, Beausoleil, M., additional, and Luycx-Bore, A., additional

Published
2010
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46. Metabolism regulation during salt exposure in the halophyte Cakile maritima

Author

Françoise Gilard, Patrick Laurenti, Patrice Meimoun, Maharajah Ponnaiah, François Bouteau, Bertrand Gakière, Camille Blasselle, Emily Palm, Stefano Mancuso, Mirvat Redwan, Delphine Arbelet-Bonnin, Hayat El-Maarouf-Bouteau, Laboratoire Interdisciplinaire des Energies de Demain (LIED (UMR_8236)), Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Università degli Studi di Firenze = University of Florence (UniFI), Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Research Unit on Cardiovascular and Metabolic Diseases (ICAN), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Institut de Cardiométabolisme et Nutrition = Institute of Cardiometabolism and Nutrition [CHU Pitié Salpêtrière] (IHU ICAN), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Laboratoire de Biologie du Développement [IBPS] (LBD), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences des Plantes de Paris-Saclay (IPS2 (UMR_9213 / UMR_1403)), Université d'Évry-Val-d'Essonne (UEVE)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Arbelet-Bonnin, D, Blasselle, C, Palm, E, Redwan, M, Ponnaiah, M, Laurenti, P, Meimoun, P, Gilard, F, Gakière, B, Mancuso, S, El-Maarouf-Bouteau, H, Bouteau, F, Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Institute of cardiometabolism and nutrition (ICAN), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Laboratoire de Biologie du Développement [Paris] (LBD), and Université d'Évry-Val-d'Essonne (UEVE)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)

Subjects
0106 biological sciences, 0301 basic medicine, Halophyte, BIO/04 - FISIOLOGIA VEGETALE, Salt stress, Plant Science, Photosynthesis, 01 natural sciences, 03 medical and health sciences, Halophytes, Salt stre, Food science, Proline, Sugar, Ecology, Evolution, Behavior and Systematics, Metabolome Salt stress, chemistry.chemical_classification, biology, Metabolism, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, biology.organism_classification, Photosynthetic capacity, 030104 developmental biology, Cakile, chemistry, [SDE]Environmental Sciences, Metabolome, Cakile maritima, Agronomy and Crop Science, 010606 plant biology & botany, Organic acid
Abstract

International audience; The halophyte Cakile maritima is a Brassicacea that has developed numerous mechanisms for managing salt. In the present study, we analyze the metabolic responses of C. maritima to increasing salt exposure in parallel with growth and photosynthetic parameters. At 10 days, 100 mM NaCl treatment has no effect, whereas 400 mM treatment decreases both growth and photosynthetic capacity. Accordingly, the metabolism was weakly impacted at 100 mM NaCl with an increase in only a few amino acids and sugars, whereas 400 mM treated plants shows noticeable changes: an increase in amino acid abundance, sugars decrease and an organic acid depletion. At 20 days, 400 mM treatment leads to more severe effects on growth and photosynthesis, whereas plant growth remains unaffected by the 100 mM NaCl treatment, despite a reduction in photosynthetic capacity. Plants treated with 400 mM NaCl present an amplified metabolic response with additional metabolites reflecting salt stress as GABA, proline and glycine. One noticeable feature of halophily in C. maritima is the increase in sugar content at low stress whereas longer or higher stress lead to a decrease in sugar content. In high salt conditions the stimulation of amino acid biosynthesis is the main strategy for osmoprotection to cope for salt stress.

Published
2020
Full Text
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