Modelling postsilking nitrogen fluxes in maize (Zea mays) using N-15-labelling field experiments
| العنوان: | Modelling postsilking nitrogen fluxes in maize (Zea mays) using N-15-labelling field experiments |
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| المؤلفون: | Jean-Louis Prioul, Bertrand Hirel, Isabelle Quilleré, A. Gallais, Marie Coque |
| المساهمون: | Génétique Végétale (GV), Institut National de la Recherche Agronomique (INRA)-Université Paris-Sud - Paris 11 (UP11)-Institut National Agronomique Paris-Grignon (INA P-G)-Centre National de la Recherche Scientifique (CNRS), Unité de recherche Nutrition Azotée des Plantes (URNAP), Institut National de la Recherche Agronomique (INRA), Institut de Biotechnologie des Plantes, Université Paris-Sud - Paris 11 (UP11) |
| المصدر: | New Phytologist New Phytologist, Wiley, 2006, 172 (4), pp.696-707. ⟨10.1111/j.1469-8137.2006.01890.x⟩ |
| بيانات النشر: | HAL CCSD, 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | 0106 biological sciences, Nitrogen, Physiology, chemistry.chemical_element, Plant Science, Biology, 15N LABELLING, Models, Biological, Zea mays, 01 natural sciences, NITROGEN UPTAKE, Hydrolysis, Labelling, NITROGEN USE EFFICIENCY, Poaceae, Stover, Nitrogen cycle, Plant Proteins, 2. Zero hunger, Nitrogen Isotopes, MODELLING, 04 agricultural and veterinary sciences, PROTEIN TURNOVER, NITROGEN REMOBILIZATION, Isotopes of nitrogen, [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy, Agronomy, chemistry, Isotope Labeling, Seeds, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, 010606 plant biology & botany |
| الوصف: | In maize (Zea mays), nitrogen (N) remobilization and postflowering N uptake are two processes that provide amino acids for grain protein synthesis. To study the way in which N is allocated to the grain and to the stover, two different 15N-labelling techniques were developed. 15NO(3-) was provided to the soil either at the beginning of stem elongation or after silking. The distribution of 15N in the stover and in the grain was monitored by calculating relative 15N-specific allocation (RSA). A nearly linear relationship between the RSA of the kernels and the RSA of the stover was found as a result of two simultaneous N fluxes: N remobilization from the stover to the grain, and N allocation to the stover and to the grain originating from N uptake. By modelling the 15N fluxes, it was possible to demonstrate that, as a consequence of protein turnover, a large proportion of the amino acids synthesized from the N taken up after silking were integrated into the proteins of the stover, and these proteins were further hydrolysed to provide N to the grain. |
| اللغة: | English |
| تدمد: | 0028-646X 1469-8137 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0433a0420e4ade88141998182ed73cd5Test https://hal.inrae.fr/hal-02659113Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....0433a0420e4ade88141998182ed73cd5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0028646X 14698137 |
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