Search Results - "Lepetit, Marc"

Control of the rhizobium-legume symbiosis by the plant nitrogen demand is tightly integrated at the whole plant level and requires inter-organ systemic signaling by Lepetit, Marc, Brouquisse, Renaud

“…Symbiotic nodules formed on legume roots with rhizobia fix atmospheric N . Bacteria reduce N to NH that is assimilated into amino acids by the plant. In…”
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Host-specific competitiveness to form nodules in Rhizobium leguminosarum symbiovar viciae by Boivin, Stéphane, Lahmidi, Nassima Ait, Sherlock, David, Bonhomme, Maxime, Dijon, Doriane, Heulin-Gotty, Karine, Le-Queré, Antoine, Pervent, Marjorie, Tauzin, Marc, Carlsson, Georg, Jensen, Erik, Journet, Etienne-Pascal, Lopez-Bellido, Raphael, Seidenglanz, Marek, Marinkovic, Jelena, Colella, Stefano, Brunel, Brigitte, Young, Peter, Lepetit, Marc

“…• Fabeae legumes such as pea and faba bean form symbiotic nodules with a large diversity of soil Rhizobium leguminosarum symbiovar viciae (Rlv) bacteria…”
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Mutation of the Arabidopsis NRT1.5 Nitrate Transporter Causes Defective Root-to-Shoot Nitrate Transport by Lin, Shan-Hua, Kuo, Hui-Fen, Canivenc, Geneviève, Lin, Choun-Sea, Lepetit, Marc, Hsu, Po-Kai, Tillard, Pascal, Lin, Huey-Ling, Wang, Ya-Yun, Tsai, Chyn-Bey, Gojon, Alain, Tsay, Yi-Fang

“…Little is known about the molecular and regulatory mechanisms of long-distance nitrate transport in higher plants. NRT1.5 is one of the 53 Arabidopsis thaliana…”
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Co-inoculation of a Pea Core-Collection with Diverse Rhizobial Strains Shows Competitiveness for Nodulation and Efficiency of Nitrogen Fixation Are Distinct traits in the Interaction by Bourion, Virginie, Heulin-Gotty, Karine, Aubert, Véronique, Tisseyre, Pierre, Chabert-Martinello, Marianne, Pervent, Marjorie, Delaitre, Catherine, Vile, Denis, Siol, Mathieu, Duc, Gérard, Brunel, Brigitte, Burstin, Judith, Lepetit, Marc

“…Pea forms symbiotic nodules with sv. (Rlv). In the field, pea roots can be exposed to multiple compatible Rlv strains. Little is known about the mechanisms…”
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Central Role for the Nitrate Transporter NRT2.1 in the Integrated Morphological and Physiological Responses of the Root System to Nitrogen Limitation in Arabidopsis by Remans, Tony, Nacry, Philippe, Pervent, Marjorie, Girin, Thomas, Tillard, Pascal, Lepetit, Marc, Gojon, Alain

“…Up-regulation of the high-affinity transport system (HATS) for NO₃⁻ and stimulation of lateral root (LR) growth are two important adaptive responses of the…”
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HIGH NITROGEN INSENSITIVE 9 (HNI9)-mediated systemic repression of root NO3 −uptake is associated with changes in histone methylation by Widiez, Thomas, El Kafafi, El Sayed, Girin, Thomas, Berr, Alexandre, Ruffel, Sandrine, Krouk, Gabriel, Vayssières, Alice, Shen, Wen-Hui, Coruzzi, Gloria M., Gojon, Alain, Lepetit, Marc

“…In plants, root nitrate uptake systems are under systemic feedback repression by the N satiety of the whole organism, thus adjusting the N acquisition capacity…”
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Localized osmotic stress activates systemic responses to N limitation in Medicago truncatula-Sinorhizobium symbiotic plants by Martin, Marie-Laure, Pervent, Marjorie, Lambert, Ilana, Colella, Stefano, Tancelin, Mathilde, Severac, Dany, Clément, Gilles, Tillard, Pascal, Frugier, Florian, Lepetit, Marc

“…In mature symbiotic root nodules, differentiated rhizobia fix atmospheric dinitrogen and provide ammonium to fulfill the plant nitrogen (N) demand. The plant…”
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Genetic Variation in Host-Specific Competitiveness of the Symbiont Rhizobium leguminosarum Symbiovar viciae by Boivin, Stéphane, Mahé, Frederic, Debellé, Frédéric, Pervent, Marjorie, Tancelin, Mathilde, Tauzin, Marc, Wielbo, Jerzy, Mazurier, Sylvie, Young, Peter, Lepetit, Marc

“…Legumes of the Fabeae tribe form nitrogen-fixing root nodules resulting from symbiotic interaction with the soil bacteria Rhizobium leguminosarum symbiovar…”
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Adaptation of Medicago truncatula to nitrogen limitation is modulated via local and systemic nodule developmental responses by Jeudy, Christian, Ruffel, Sandrine, Freixes, Sandra, Tillard, Pascal, Santoni, Anne Lise, Morel, Sylvain, Journet, Etienne-Pascal, Duc, Gérard, Gojon, Alain, Lepetit, Marc, Salon, Christophe

“…Adaptation of Medicago truncatula to local nitrogen (N) limitation was investigated to provide new insights into local and systemic N signaling. The split-root…”
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Local and systemic N signaling are involved in Medicago truncatula preference for the most efficient Sinorhizobium symbiotic partners by Laguerre, Gisèle, Heulin‐Gotty, Karine, Brunel, Brigitte, Klonowska, Agnieszka, Le Quéré, Antoine, Tillard, Pascal, Prin, Yves, Cleyet‐Marel, Jean‐Claude, Lepetit, Marc

“…Responses of the Medicago truncatula–Sinorhizobium interaction to variation in N2-fixation of the bacterial partner were investigated. Split-root systems were…”
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Systemic Signaling of the Plant Nitrogen Status Triggers Specific Transcriptome Responses Depending on the Nitrogen Source in Medicago truncatula by Ruffel, Sandrine, Freixes, Sandra, Balzergue, Sandrine, Tillard, Pascal, Jeudy, Christian, Martin-Magniette, Marie Laure, van der Merwe, Margaretha J, Kakar, Klementina, Gouzy, Jerôme, Fernie, Alisdair R, Udvardi, Michael, Salon, Christophe, Gojon, Alain, Lepetit, Marc

“…Legumes can acquire nitrogen (N) from NO₃⁻, NH₄⁺, and N₂ (through symbiosis with Rhizobium bacteria); however, the mechanisms by which uptake and assimilation…”
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Identification of a 150 bp cis-acting element of the AtNRT2.1 promoter involved in the regulation of gene expression by the N and C status of the plant by GIRIN, THOMAS, LEJAY, LAURENCE, WIRTH, JUDITH, WIDIEZ, THOMAS, PALENCHAR, PETER M, NAZOA, PATRICIA, TOURAINE, BRUNO, GOJON, ALAIN, LEPETIT, MARC

“…The Arabidopsis thaliana AtNRT2.1 gene, which encodes a NO₃⁻ transporter involved in high-affinity uptake by the roots, is a molecular target of several…”
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Identification of Arabidopsis Mutants Impaired in the Systemic Regulation of Root Nitrate Uptake by the Nitrogen Status of the Plant by Girin, Thomas, El-Kafafi, El-Sayed, Widiez, Thomas, Erban, Alexander, Hubberten, Hans-Michael, Kopka, Joachim, Hoefgen, Rainer, Gojon, Alain, Lepetit, Marc

“…Nitrate uptake by the roots is under systemic feedback repression by high nitrogen (N) status of the whole plant. The NRT2.1 gene, which encodes a NO₃⁻…”
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Characterization of AtCHX17, a member of the cation/H+ exchangers, CHX family, from Arabidopsis thaliana suggests a role in K+ homeostasis by Cellier, F, Conejero, G, Ricaud, L, Luu, D.T, Lepetit, M, Gosti, F, Casse, F

“…The Arabidopsis genome contains many sequences annotated as encoding H+-coupled cotransporters. Among those are the members of the cation:proton antiporter-2…”
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Unexpectedly low nitrogen acquisition and absence of root architecture adaptation to nitrate supply in a Medicago truncatula highly branched root mutant by Bourion, Virginie, Martin, Chantal, de Larambergue, Henri, Jacquin, Françoise, Aubert, Grégoire, Martin-Magniette, Marie-Laure, Balzergue, Sandrine, Lescure, Geoffroy, Citerne, Sylvie, Lepetit, Marc, Munier-Jolain, Nathalie, Salon, Christophe, Duc, Gérard

“…Physiological and developmental analyses provide evidence that the highly branched root architecture of a mutant results from systemic regulation by its…”
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New insights into the control of symbiotic nitrogen fixation by carbon supply by Lepetit, Marc, Brouquisse, Renaud

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Gene expression of the NO₃⁻transporter NRT1.1 and the nitrate reductase NIA1 is repressed in Arabidopsis roots by NO₂⁻, the product of NO₃⁻ reduction by Loque, D, Tillard, P, Gojon, A, Lepetit, M

“…NRT1.1 and NIA1 genes, which encode a nitrate (NO3 -) transporter and the minor isoform of NO3 - reductase (NR), respectively, are overexpressed in roots of…”
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The Compact Root Architecture 2 systemic pathway is required for the repression of cytokinins and miR399 accumulation in Medicago truncatula N-limited plants by Argirò, Luca, Laffont, Carole, Moreau, Corentin, Moreau, Carol, Su, Yangyang, Pervent, Marjorie, Parrinello, Hugues, Blein, Thomas, Kohlen, Wouter, Lepetit, Marc, Frugier, Florian

“…Abstract Legume plants can acquire mineral nitrogen (N) either through their roots or via a symbiotic interaction with N-fixing rhizobia bacteria housed in…”
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PHO1 family members transport phosphate from infected nodule cells to bacteroids in Medicago truncatula by Nguyen, Nga N T, Clua, Joaquin, Vetal, Pallavi V, Vuarambon, Dominique Jacques, De Bellis, Damien, Pervent, Marjorie, Lepetit, Marc, Udvardi, Michael, Valentine, Alexander J, Poirier, Yves

“…Legumes play an important role in the soil nitrogen availability via symbiotic nitrogen fixation (SNF). Phosphate (Pi) deficiency severely impacts SNF because…”
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Responses of mature symbiotic nodules to the whole-plant systemic nitrogen signaling by Lambert, Ilana, Pervent, Marjorie, Le Queré, Antoine, Clément, Gilles, Tauzin, Marc, Severac, Dany, Benezech, Claire, Tillard, Pascal, Martin-Magniette, Marie-Laure, Colella, Stefano, Lepetit, Marc

“…In symbiotic root nodules of legumes, terminally differentiated rhizobia fix atmospheric N2 producing an NH4+ influx that is assimilated by the plant. The…”
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