Location: Versailles, France
Nitrogen remobilisation, leaf senescence
- Amino acid pattern and glutamate metabolism during dehydration stress in the 'resurrection' plant Sporobolus stapfianus: a comparison between desiccation-sensitive and desiccation-tolerant leavesTommaso Martinelli
Dipartimento di Scienze Agronomiche e Gestione del Territorio Agroforestale, Facolta di Agraria, Universita degli Studi di Firenze, I 50144 Firenze, Italia
J Exp Bot 58:3037-46. 2007..In this context, the role of GS for asparagine accumulation in YL is discussed...
- The plant nitrogen mobilization promoted by Colletotrichum lindemuthianum in Phaseolus leaves depends on fungus pathogenicityVirginie Tavernier
Unité de Nutrition Azotée des Plantes, UR 511, INRA, Route de Saint Cyr F 78000 Versailles, France
J Exp Bot 58:3351-60. 2007..It is concluded that a role of GS1 alpha in plant defence has to be considered...
- Evidence for the presence of photorespiration in desiccation-sensitive leaves of the C4 'resurrection' plant Sporobolus stapfianus during dehydration stressTommaso Martinelli
Dipartimento di Scienze Agronomiche e Gestione del Territorio Agroforestale, Facolta di Agraria, Universita degli Studi di Firenze, 50144 Firenze, Italy
J Exp Bot 58:3929-39. 2007..stapfianus during the stress...
- Nitrogen recycling and remobilization are differentially controlled by leaf senescence and development stage in Arabidopsis under low nitrogen nutritionCéline Diaz
Unité de Nutrition Azotée des Plantes, UR511, INRA, F 78000 Versailles, France
Plant Physiol 147:1437-49. 2008..At the reproductive stage, N remobilization efficiency did not depend on senescence phenotypes but was related to the ratio between the biomasses of the sink and the source organs...
- Enzymatic and metabolic diagnostic of nitrogen deficiency in Arabidopsis thaliana Wassileskija accessionThomas Lemaitre
Unité de Nutrition Azotée des Plantes, UNAP, UR511, INRA, Route de Saint Cyr, F 78000 Versailles, France
Plant Cell Physiol 49:1056-65. 2008..The major finding of this report was that together with decreasing biomass and yield, nitrogen limitation triggers large modifications in vegetative products and seed quality...
- Leaf nitrogen remobilisation for plant development and grain fillingC Masclaux-Daubresse
Unité de Nutrition Azotée des Plantes, Institut National de la Recherche Agronomique, Route de Saint Cyr, Versailles, France
Plant Biol (Stuttg) 10:23-36. 2008..An overall examination of the physiological, metabolic and genetic aspects of nitrogen remobilisation is presented...
- Sugars, senescence, and ageing in plants and heterotrophic organismsAstrid Wingler
Research Department of Genetics, Evolution and Environment, Darwin Building, University College London, Gower Street, London WC1E 6BT, UK
J Exp Bot 60:1063-6. 2009..Similarities and differences in the signalling pathways are discussed, including the role of autophagy, TOR (target of rapamycin), Sir2 (silent information regulator-2), and SnRK1 (sucrose non-fermenting-1-related protein kinase-1)...
- QTL analysis for sugar-regulated leaf senescence supports flowering-dependent and -independent senescence pathwaysAstrid Wingler
Genetics, Evolution and Environment, University College London, Gower Street, London WC1E 6BT, UK
New Phytol 185:420-33. 2010..The results show that whole-rosette senescence is genetically linked to the vernalization-dependent control of flowering, but is also controlled by flowering-independent pathways...
- Natural variation of nitrate uptake and nitrogen use efficiency in Arabidopsis thaliana cultivated with limiting and ample nitrogen supplyFabien Chardon
Institut Jean Pierre Bourgin, IJPB, Unité de Nutrition Azotée des Plantes, UNAP, UR511, INRA, Route de Saint Cyr, F 78000 Versailles, France
J Exp Bot 61:2293-302. 2010..The present data will facilitate the choice of Arabidopsis accessions as parents of recombinant inbred line populations suitable for the mapping of quantitiative trait loci related to NUE, NupE, and N storage capacity...
- Nitrogen uptake, assimilation and remobilization in plants: challenges for sustainable and productive agricultureCeline Masclaux-Daubresse
Institut Jean Pierre Bourgin IJPB, UMR 1318, INRA, 78026 Versailles Cedex, France
Ann Bot 105:1141-57. 2010..The detection of the limiting factors that could be manipulated to increase NUE is the major goal of such research...
- Senescence and death of plant organs: nutrient recycling and developmental regulationAnne Guiboileau
Institut Jean Pierre Bourgin IJPB, UMR 1318, Bâtiment 2, Institut National de la Recherche Agronomique, Route de Saint Cyr, Versailles Cedex, France
C R Biol 333:382-91. 2010..The role of autophagy and of the Target of Rapamycin (TOR) kinase as potential regulators integrating environmental and endogenous signals, which control cell proliferation, reprogramming and nutrient management, is finally considered...
- The cytosolic glutamine synthetase GLN1;2 plays a role in the control of plant growth and ammonium homeostasis in Arabidopsis rosettes when nitrate supply is not limitingJérémy Lothier
Institut Jean Pierre Bourgin IJPB UMR 1318, INRA, F 78026 Versailles Cedex, France
J Exp Bot 62:1375-90. 2011..Altogether the results suggest that GLN1;2 is essential for nitrogen assimilation under ample nitrate supply and for ammonium detoxification...
- Genetic variation suggests interaction between cold acclimation and metabolic regulation of leaf senescenceCeline Masclaux Daubresse
Unité de Nutrition Azotée des Plantes, Institut National de la Recherche Agronomique, F 78026 Versailles Cedex, France
Plant Physiol 143:434-46. 2007..The role of functional chloroplasts and of nitrogen and phosphate availability in this regulation is discussed...
- [Implication of glutamate, isocitrate and malate deshydrogenases in nitrogen assimilation in the cadmium-stressed tomato]Chiraz Chaffei
Unité de recherche Nutrition et métabolisme azotés et protéines de stress 99UR 09 20, Departement de Biologie, Faculte des Sciences de Tunis, Campus Universitaire El Manar I, 1060 Tunis, Tunisie
C R Biol 329:790-803. 2006..These results were discussed in relation to the hypothesis attributing to the dehydrogenase enzymes (GDH, MDH, ICDH) an important role in the plant defence processes against cadmium-induced stresses...
- Glutamine synthetase-glutamate synthase pathway and glutamate dehydrogenase play distinct roles in the sink-source nitrogen cycle in tobaccoCeline Masclaux-Daubresse
Unité de Nutrition Azotée des Plantes, Institut National de la Recherche Agronomique, 78026 Versailles Cedex, France
Plant Physiol 140:444-56. 2006..Taken together, the data provide evidence that the GS-GOGAT pathway and GDH play distinct roles in the source-sink nitrogen cycle of tobacco leaves...
- Characterization of the pelL gene encoding a novel pectate lyase of Erwinia chrysanthemi 3937E Lojkowska
Department of Biotechnology, University of Gdansk, Poland
Mol Microbiol 16:1183-95. 1995..The pelL mutant displayed a reduced virulence on potato tubers and Saintpaulia ionantha plants, demonstrating the important role of this enzyme in soft-rot disease...
- Differential expression of two siderophore-dependent iron-acquisition pathways in Erwinia chrysanthemi 3937: characterization of a novel ferrisiderophore permease of the ABC transporter familyB Mahe
Laboratoire de Pathologie Végétale, INA INRA, Paris, France
Mol Microbiol 18:33-43. 1995..in conclusion, E. chrysanthemi provides an interesting model in which iron acquisition involves an inductive process resulting in differential expression of two siderophore-mediated pathways in relation to external iron accessibility...
- The role of iron in plant host-pathogen interactionsD Expert
Laboratoire de Pathologie Végétale, INRA INA P G, Paris, France
Trends Microbiol 4:232-7. 1996..These studies could lead to the development of new control strategies against microbial infections of plants...
- Characterization of the sink/source transition in tobacco ( Nicotiana tabacum L.) shoots in relation to nitrogen management and leaf senescenceC Masclaux
Unité de Nutrition Azotée des Plantes, INRA, Centre de Versailles, France
Planta 211:510-8. 2000..The role of the newly induced enzymes and the nature of the potential metabolic and developmental signals involved in the regulation of their expression during leaf senescence are discussed...
- Immunolocalization of glutamine synthetase in senescing tobacco (Nicotiana tabacum L.) leaves suggests that ammonia assimilation is progressively shifted to the mesophyll cytosolN Brugière
Unité de Nutrition Azotée des Plantes, INRA de Versailles, France
Planta 211:519-27. 2000..Alltogether, our results suggest that during senescence, ammonia assimilation is progressively shifted from the chloroplasts to the cytosol of leaf mesophyll cells...
- Glutamine and alpha-ketoglutarate are metabolite signals involved in nitrate reductase gene transcription in untransformed and transformed tobacco plants deficient in ferredoxin-glutamine-alpha-ketoglutarate aminotransferaseS Ferrario-Mery
Unité de Nutrition Azotée des Plantes, INRA de Versailles, France
Planta 213:265-71. 2001....
- Characterization of markers to determine the extent and variability of leaf senescence in Arabidopsis. A metabolic profiling approachCéline Diaz
Unité de Nutrition Azotée des Plantes, Institut National de la Recherche Agronomique, 78 026 Versailles Cedex, France
Plant Physiol 138:898-908. 2005..Surprisingly, late-senescing lines appeared to mobilize glutamine, asparagine, and sulfate more efficiently than early-senescing lines. The physiological basis of the relationship between leaf senescence and flowering time was analyzed...
- Expression of a ferredoxin-dependent glutamate synthase gene in mesophyll and vascular cells and functions of the enzyme in ammonium assimilation in Nicotiana tabacum (L.)Magali Feraud
Unité de Nutrition Azotée des Plantes, Institut National de la Recherche Agronomique, Route de St Cyr, 78026, Versailles Cedex, France
Planta 222:667-77. 2005..Expression of GLU1 in mesophyll cells implies that Fd-GOGAT assimilates photorespiratory and primary ammonium. GLU1 expression in vascular cells indicates that Fd-GOGAT provides amino acids for nitrogen translocation...
- Leaf yellowing and anthocyanin accumulation are two genetically independent strategies in response to nitrogen limitation in Arabidopsis thalianaCéline Diaz
Unité de Nutrition Azotée des Plantes, INRA, Versailles, France
Plant Cell Physiol 47:74-83. 2006..No co-localization between QTLs for leaf yellowing and redness has been found, suggesting that the two characters are genetically independent...
- The two senescence-related markers, GS1 (cytosolic glutamine synthetase) and GDH (glutamate dehydrogenase), involved in nitrogen mobilization, are differentially regulated during pathogen attack and by stress hormones and reactive oxygen species in NicotiKarine Pageau
, Route de Saint Cyr, F-78 026 Versailles Cedex, France
J Exp Bot 57:547-57. 2006..The links between natural plant senescence and stress-induced senescence are discussed, as well as the potential role of GS1 and GDH in a metabolic safeguard process...
- Exploring nitrogen remobilization for seed filling using natural variation in Arabidopsis thalianaCeline Masclaux-Daubresse
Institut Jean Pierre Bourgin, UMR1318 INRA AgroParisTech, Bâtiment 2, INRA Centre de Versailles Grignon, Route de St Cyr RD10, F 78026 Versailles Cedex, France
J Exp Bot 62:2131-42. 2011..New insights provided in this report are helpful for the comprehension of NUE and NRE concepts in Arabidopsis as well as in crops and especially in Brassica napus...
- The two nitrogen mobilisation- and senescence-associated GS1 and GDH genes are controlled by C and N metabolitesCeline Masclaux-Daubresse
Unité de Nutrition Azotée des Plantes, Institut National de la Recherche Agronomique, Route de St Cyr, 78026 Versailles Cedex, France
Planta 221:580-8. 2005..Interestingly, an opposite regulation of GS1 and GS2 by Pro and Glu was shown. The contrary effect of Suc on NIA (NR encoding gene) and GDH mRNA accumulation was also emphasized...