المؤلفون: Bouchet, Anne-Sophie, Laperche, Anne, Bissuel, Christine, Snowdon, Rod, Nesi, Nathalie, Stahl, Andreas

المساهمون: Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, Justus-Liebig-Universität Gießen = Justus Liebig University (JLU), French National Research Agency (ANR), French program "Investments for the Future", German Ministry of Education and Research (BMBF), German ministry of Nutrition and Agriculture, Agency for Renewable Resources (BMEL/FNR), French Ministry of Education and Research, ANR-11-BTBR-0004,RAPSODYN,Optimisation de la teneur et du rendement en huile chez le colza cultivé sous contrainte azotée(2011)

المصدر: ISSN: 1774-0746.

مصطلحات موضوعية: Nitrogen utilization efficiency (NUtE), Nitrogen uptake efficiency (NUpE), Nitrogen remobilization, Nitrogen losses, Genomic selection, Genetic diversity, Brassica napus, Yield, [SDV]Life Sciences [q-bio]

الوصف: International audience ; AbstractMineral nitrogen fertilization has improved crop yield over the last century but has also caused air and water pollution. Reduction of nitrogen inputs and maintaining high yields are therefore essential to ensure a more sustainable agriculture. Improving the nitrogen use efficiency (NUE) of crops is therefore needed. Rapeseed, Brassica napus, depends on nitrogen fertilization due to its low NUE, with the ratio of plant nitrogen content to nitrogen supplied often not exceeding 60 %. Here, we review the major phenotypic traits associated with NUE in B. napus, with special emphasis on winter oilseed rape. We discuss the genetic diversity available and potential breeding strategies. The major points are the following: (1) rapeseed seed yield elaboration is complex, with overlapping phases of nitrogen uptake and remobilization during the crop cycle; (2) traits related to nitrogen uptake, such as root length and the amount of nitrogen absorbed after flowering, and traits related to nitrogen remobilization, such as the “stay-green” phenotype, have been identified as possible levers to improve NUE in rapeseed; (3) a substantial body of studies investigating the genetic control of NUE traits have already published and potential candidate genes identified; and (4) rapeseed genetic diversity may be enriched by exploiting interpopulation genetic variation and the closely related gene pools of Brassica rapa and Brassica oleracea.

العلاقة: hal-01462752; https://hal.science/hal-01462752Test; https://hal.science/hal-01462752/documentTest; https://hal.science/hal-01462752/file/13593_2016_Article_371.pdfTest; PRODINRA: 361332; WOS: 000383020000004

الإتاحة: https://doi.org/10.1007/s13593-016-0371-0Test
https://hal.science/hal-01462752Test
https://hal.science/hal-01462752/documentTest
https://hal.science/hal-01462752/file/13593_2016_Article_371.pdfTest

المؤلفون: Girondé, Alexandra, Etienne, Philippe, Trouverie, Jacques, Bouchereau, Alain, Le Cahérec, Françoise, Leport, Laurent, Orsel, Mathilde, Niogret, Marie-Françoise, Nesi, Nathalie, Soulay, Fabienne, Masclaux-Daubresse, Céline, Avice, Jean-Christophe

المساهمون: Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, Institut de Recherche en Horticulture et Semences (IRHS), Université d'Angers (UA)-Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, ANR-11-BTBR-0004,RAPSODYN,Optimisation de la teneur et du rendement en huile chez le colza cultivé sous contrainte azotée(2011)

المصدر: ISSN: 1471-2229 ; BMC Plant Biology ; https://hal.science/hal-01392652Test ; BMC Plant Biology, 2015, 15 (1), pp.59. ⟨10.1186/s12870-015-0437-1⟩ ; http://www.biomedcentral.com/1471-2229/15/59Test.

مصطلحات موضوعية: Brassica napus, Leaf senescence, N remobilization efficiency, N use efficiency, Proteolysis, Proteasome, [SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology

الوصف: International audience ; Oilseed rape is the third largest oleaginous crop in the world but requires high levels of N fertilizer of which only 50% is recovered in seeds. This weak N use efficiency is associated with a low foliar N remobilization, leading to a significant return of N to the soil and a risk of pollution. Contrary to what is observed during senescence in the vegetative stages, N remobilization from stems and leaves is considered efficient during monocarpic senescence. However, the contribution of stems towards N management and the cellular mechanisms involved in foliar remobilization remain largely unknown. To reach this goal, the N fluxes at the whole plant level from bolting to mature seeds and the processes involved in leaf N remobilization and proteolysis were investigated in two contrasting genotypes (Aviso and Oase) cultivated under ample or restricted nitrate supply. Results: During seed filling in both N conditions, Oase efficiently allocated the N from uptake to seeds while Aviso favoured a better N remobilization from stems and leaves towards seeds. Nitrate restriction decreased seed yield and oil quality for both genotypes but Aviso had the best seed N filling. Under N limitation, Aviso had a better N remobilization from leaves to stems before the onset of seed filling. Afterwards, the higher N remobilization from stems and leaves of Aviso led to a higher final N amount in seeds. This high leaf N remobilization is associated with a better degradation/export of insoluble proteins, oligopeptides, nitrate and/or ammonia. By using an original method based on the determination of Rubisco degradation in the presence of inhibitors of proteases, efficient proteolysis associated with cysteine proteases and proteasome activities was identified as the mechanism of N remobilization. Conclusion: The results confirm the importance of foliar N remobilization after bolting to satisfy seed filling and highlight that an efficient proteolysis is mainly associated with (i) cysteine proteases and proteasome ...

العلاقة: info:eu-repo/semantics/altIdentifier/pmid/25848818; hal-01392652; https://hal.science/hal-01392652Test; https://hal.science/hal-01392652/documentTest; https://hal.science/hal-01392652/file/The%20contrasting%20N%20management.pdfTest; OKINA: ua9621; PRODINRA: 305892; PUBMED: 25848818; WOS: 000352193800001

الإتاحة: https://doi.org/10.1186/s12870-015-0437-1Test
https://hal.science/hal-01392652Test
https://hal.science/hal-01392652/documentTest
https://hal.science/hal-01392652/file/The%20contrasting%20N%20management.pdfTest

المؤلفون: Maillard, Anne, Billard, Vincent, Garnica, Maria, Prudent, Marion, Garcia-Mina, Maria, Yvin, Jean-Claude, Ourry, Alain, A.

المساهمون: Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), Timac Agro Spain, Génétique et Amélioration des Fruits et Légumes (GAFL), Institut National de la Recherche Agronomique (INRA), Centre Mondial de l'Innovation Roullier, Groupe Roullier, The Regional Council of Lower Normandy (N°12P03057), the Regional Council of Britany (N°12008011), the ERDF (European Regional Development Fund) (N°33525) and Timac Agro International

المصدر: ISSN: 1664-462X ; Frontiers in Plant Science ; https://normandie-univ.hal.science/hal-02183523Test ; Frontiers in Plant Science, 2015, 6, ⟨10.3389/fpls.2015.00317⟩ ; http://journal.frontiersin.org/journal/plant-scienceTest.

مصطلحات موضوعية: remobilization, ionomic, nutrient deficiencies, crop species, brassica napus, trees, senescence, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology

الوصف: This document is protected by copyright and was first published by Frontiers. All rights reserved. It is reproduced with permission. ; International audience ; Higher plants have to cope with fluctuating mineral resource availability. However, strategies such as stimulation of root growth, increased transporter activities, and nutrient storage and remobilization have been mostly studied for only a few macronutrients. Leaves of cultivated crops (Zea mays, Brass/ca napus, Pisum sativum, Triticum aestivum, Hordeum vulgare) and tree species (Quercus robur, Populus nigra, Alnus glutinosa) grown under field conditions were harvested regularly during their life span and analyzed to evaluate the net mobilization of 13 nutrients during leaf senescence. While N was remobilized in all plant species with different efficiencies ranging from 40% (maize) to 90% (wheat), other macronutrients (K-P-S-Mg) were mobilized in most species. Ca and Mn, usually considered as having low phloem mobility were remobilized from leaves in wheat and barley. Leaf content of Cu-Mo-Ni-B-Fe-Zn decreased in some species, as a result of remobilization. Overall, wheat, barley and oak appeared to be the most efficient at remobilization while poplar and maize were the least efficient. Further experiments were performed with rapeseed plants subjected to individual nutrient deficiencies. Compared to field conditions, remobilization from leaves was similar (N-S-Cu) or increased by nutrient deficiency (K-P-Mg) while nutrient deficiency had no effect on Mo-Zn-B-Ca-Mn, which seemed to be non-mobile during leaf senescence under field conditions. However, Ca and Mn were largely mobilized from roots (-97 and -86% of their initial root contents, respectively) to shoots. Differences in remobilization between species and between nutrients are then discussed in relation to a range of putative mechanisms.

العلاقة: hal-02183523; https://normandie-univ.hal.science/hal-02183523Test; https://normandie-univ.hal.science/hal-02183523/documentTest; https://normandie-univ.hal.science/hal-02183523/file/2015_Maillard_Frontiers%20in%20Plant%20Science_1.pdfTest; PRODINRA: 333514; WOS: 000356957400001

الإتاحة: https://doi.org/10.3389/fpls.2015.00317Test
https://normandie-univ.hal.science/hal-02183523Test
https://normandie-univ.hal.science/hal-02183523/documentTest
https://normandie-univ.hal.science/hal-02183523/file/2015_Maillard_Frontiers%20in%20Plant%20Science_1.pdfTest

المؤلفون: Jean-Christophe Avice, Jeanne Cheneby, Nicolas Elie, Sophie Brunel-Muguet, Philippe Etienne, Mickael Lamboeuf, Yacine Akmouche, Jacques Trouverie, Philippe D’Hooghe, Anne Laperche, Jessica Bertheloot

المساهمون: Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), Agroécologie [Dijon], Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université Bourgogne Franche-Comté [COMUE] (UBFC), AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut de Recherche en Horticulture et Semences (IRHS), AGROCAMPUS OUEST-Institut National de la Recherche Agronomique (INRA)-Université d'Angers (UA), Pari Scientifique Département Environnement et Agronomie, Institut National de la Recherche Agronomique, Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, Université d'Angers (UA)-Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, AGROCAMPUS OUEST-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Recherche Agronomique (INRA), Ecophysiologie Végétale, Agronomie et Nutritions NCS (EVA), Normandie Université (NU)-Normandie Université (NU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Bourgogne (UB)-Institut National de la Recherche Agronomique (INRA)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Université de Rennes 1 (UR1), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

المصدر: Planta
Planta, Springer Verlag, 2019, 250 (6), pp.2047-2062. ⟨10.1007/s00425-019-03284-2⟩
Planta, 2019, 250 (6), pp.2047-2062. ⟨10.1007/s00425-019-03284-2⟩

مصطلحات موضوعية: 0106 biological sciences, 0301 basic medicine, Genotype, Nitrogen, Ribulose-Bisphosphate Carboxylase, Brassica, chemistry.chemical_element, Context (language use), Flowers, Plant Science, Biology, Photosynthesis, 01 natural sciences, Remobilization, Crop, 03 medical and health sciences, Human fertilization, Sulphur, [SDV.SA.STA]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of agriculture, Genetics, Indicators, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS, Plant Proteins, 2. Zero hunger, Sulfates, Brassica napus, fungi, RuBisCO, food and beverages, Limiting, biology.organism_classification, Sulfur, Crop Production, Plant Leaves, 030104 developmental biology, Agronomy, chemistry, Fertilization, Seeds, Oilseed rape, 010606 plant biology & botany

الوصف: International audience; Specific combinations of physiological and molecular parameters associated with N and S remobilization measured at the onset of flowering were predictive of final crop performances in oilseed rape. Oilseed rape (Brassica napus L.) is a high nitrogen (N) and sulphur (S) demanding crop. Nitrogen- and S-remobilization processes allow N and S requirements to reproductive organs to be satisfied when natural uptake is reduced, thus ensuring high yield and seed quality. The quantification of physiological and molecular indicators of early N and S remobilization could be used as management tools to correct N and S fertilization. However, the major limit of this corrective strategy is to ensure the correlation between final performances-related variables and early measured parameters. In our study, four genotypes of winter oilseed rape (OSR) were grown until seed maturity under four nutritional modalities combining high and/or low N and S supplies. Plant final performances, i.e., seed production, N- and S-harvest indexes, seed N and S use efficiencies, and early parameters related to N- or S-remobilization processes, i.e., photosynthetic leaf area, N and S leaf concentrations, leaf soluble protein and leaf sulphate concentrations, and leaf RuBisCO abundance at flowering, were measured. We demonstrated that contrasting final performances existed according to the N and S supplies. An optimal N:S ratio supply could explain the treatment-specific crop performances, thus justifying N and S concurrent managements. Specific combinations of early measured plant parameters could be used to predict final performances irrespective of the nutritional supply and the genotype. This work demonstrates the potential of physiological and molecular indicators measured at flowering to reflect the functioning of N- and S-compound remobilization and to predict yield and quality penalties. However, because the predictive models are N and S independent, instant N and S leaf analyses are required to further adjust the adequate fertilization. This study is a proof of a concept which opens prospects regarding instant diagnostic tools in the context of N and S mineral fertilization management.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ee3dc84afae7db5fd2b606a3340d8c1Test
https://hal-agrocampus-ouest.archives-ouvertes.fr/hal-02353498Test

المؤلفون: Anne Maillard, Philippe Laîné, Marion Prudent, Sylvain Diquélou, Vincent Billard, Maria Garnica, Alain Ourry, José-Maria Garcia-Mina, Jean-Claude Yvin

المساهمون: Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), Timac Agro Spain, Génétique et Amélioration des Fruits et Légumes (GAFL), Institut National de la Recherche Agronomique (INRA), Centre Mondial d'Innovation - Groupe Roullier (CMI ), The Regional Council of Lower Normandy (N°12P03057), the Regional Council of Britany (N°12008011), the ERDF (European Regional Development Fund) (N°33525) and Timac Agro International, Unité de recherche Génétique et amélioration des fruits et légumes (GALF)

المصدر: Frontiers in Plant Science
Frontiers in Plant Science, Frontiers, 2015, 6, ⟨10.3389/fpls.2015.00317⟩
Frontiers in Plant Science, Vol 6 (2015)
Dadun. Depósito Académico Digital de la Universidad de Navarra
instname
Frontiers in Plant Science (6), . (2015)

مصطلحات موضوعية: 0106 biological sciences, senescence, Crop species, Plant Science, lcsh:Plant culture, Senescence, 01 natural sciences, Remobilization, Pisum, Trees, brassica napus, Quercus robur, 03 medical and health sciences, Nutrient, Sativum, Biología Vegetal y Animal, Ecología, Ionomic, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, lcsh:SB1-1110, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, Original Research, 2. Zero hunger, 0303 health sciences, crop species, biology, Brassica napus, trees, 15. Life on land, biology.organism_classification, Alnus glutinosa, remobilization, Agronomy, Shoot, Nutrient deficiencies, nutrient deficiencies, ionomic, Phloem, Hordeum vulgare, 010606 plant biology & botany

الوصف: This document is protected by copyright and was first published by Frontiers. All rights reserved. It is reproduced with permission.; International audience; Higher plants have to cope with fluctuating mineral resource availability. However, strategies such as stimulation of root growth, increased transporter activities, and nutrient storage and remobilization have been mostly studied for only a few macronutrients. Leaves of cultivated crops (Zea mays, Brass/ca napus, Pisum sativum, Triticum aestivum, Hordeum vulgare) and tree species (Quercus robur, Populus nigra, Alnus glutinosa) grown under field conditions were harvested regularly during their life span and analyzed to evaluate the net mobilization of 13 nutrients during leaf senescence. While N was remobilized in all plant species with different efficiencies ranging from 40% (maize) to 90% (wheat), other macronutrients (K-P-S-Mg) were mobilized in most species. Ca and Mn, usually considered as having low phloem mobility were remobilized from leaves in wheat and barley. Leaf content of Cu-Mo-Ni-B-Fe-Zn decreased in some species, as a result of remobilization. Overall, wheat, barley and oak appeared to be the most efficient at remobilization while poplar and maize were the least efficient. Further experiments were performed with rapeseed plants subjected to individual nutrient deficiencies. Compared to field conditions, remobilization from leaves was similar (N-S-Cu) or increased by nutrient deficiency (K-P-Mg) while nutrient deficiency had no effect on Mo-Zn-B-Ca-Mn, which seemed to be non-mobile during leaf senescence under field conditions. However, Ca and Mn were largely mobilized from roots (-97 and -86% of their initial root contents, respectively) to shoots. Differences in remobilization between species and between nutrients are then discussed in relation to a range of putative mechanisms.

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0efbde9fab787b27bf9edafc57f43f75Test
https://hal-normandie-univ.archives-ouvertes.fr/hal-02183523Test

المؤلفون: Gironde, Alexandra, Poret, Marine, Etienne, Philippe, Trouverie, Jacques, Bouchereau, Alain, Le Cahérec, Françoise, Leport, Laurent, Niogret, Françoise, Avice, Jean-Christophe

المساهمون: Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, ANR-11-BTBR-0004,RAPSODYN,Optimisation de la teneur et du rendement en huile chez le colza cultivé sous contrainte azotée(2011)

المصدر: ISSN: 2223-7747 ; Plants ; https://normandie-univ.hal.science/hal-02183519Test ; Plants, 2016, 5 (1), pp.1. ⟨10.3390/plants5010001⟩.

مصطلحات موضوعية: Brassica napus, N remobilization, acidic proteases, genotypic variability, proteolysis, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology

الوصف: International audience

العلاقة: info:eu-repo/semantics/altIdentifier/pmid/27135221; hal-02183519; https://normandie-univ.hal.science/hal-02183519Test; PUBMED: 27135221; PUBMEDCENTRAL: PMC4844419

الإتاحة: https://doi.org/10.3390/plants5010001Test
https://normandie-univ.hal.science/hal-02183519Test

المؤلفون: Poret, Marine, Chandrasekar, Balakumaran, van Der Hoorn, Renier A.L., Avice, Jean-Christophe

المساهمون: Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), French National Research Agency ANR-11-BTBR-004, French Ministry of Research, PhD Doctoral School (EDNBISE, Ecole Doctorale Normande Biologie Integrative, Sante, Environnement), ERA-IB project "PRODuCE", Max Planck Society, COST CM1004, University of Oxford, ANR-11-BTBR-0004,RAPSODYN,Optimisation de la teneur et du rendement en huile chez le colza cultivé sous contrainte azotée(2011)

المصدر: ISSN: 0168-9452 ; Plant Science ; https://normandie-univ.hal.science/hal-02183629Test ; Plant Science, 2016, 246, pp.139-153. ⟨10.1016/j.plantsci.2016.02.011⟩.

مصطلحات موضوعية: Brassica napus, Nitrogen remobilization efficiency, Protease activity, Senescence-associated proteases, Cysteine proteases, Soluble proteins, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology

الوصف: International audience ; Oilseed rape (Brassica napus L.) is a crop plant characterized by a poor nitrogen (N) use efficiency that is mainly due to low N remobilization efficiency during the sequential leaf senescence of the vegetative stage. As a high leaf N remobilization efficiency was strongly linked to a high remobilization of proteins during leaf senescence of rapeseed, our objective was to identify senescence-associated protease activities implicated in the protein degradation. To reach this goal, leaf senescence processes and protease activities were investigated in a mature leaf becoming senescent in plants subjected to ample or low nitrate supply. The characterization of protease activities was performed by using in vitro analysis of RuBisCO degradation with or without inhibitors of specific protease classes followed by a protease activity profiling using activity-dependent probes. As expected, the mature leaf became senescent regardless of the nitrate treatment, and nitrate limitation enhanced the senescence processes associated with an enhanced degradation of soluble proteins. The characterization of protease activities revealed that: (i) aspartic proteases and the proteasome were active during senescence regardless of nitrate supply, and (ii) the activities of serine proteases and particularly cysteine proteases (Papain-like Cys proteases and vacuolar processing enzymes) increased when protein remobilization associated with senescence was accelerated by nitrate limitation. Short statement: Serine and particularly cysteine proteases (both PLCPs and VPEs) seem to play a crucial role in the efficient protein remobilization when leaf senescence of oilseed rape was accelerated by nitrate limitation.

العلاقة: info:eu-repo/semantics/altIdentifier/pmid/26993244; hal-02183629; https://normandie-univ.hal.science/hal-02183629Test; PRODINRA: 353835; PUBMED: 26993244; WOS: 000373545500014

الإتاحة: https://doi.org/10.1016/j.plantsci.2016.02.011Test
https://normandie-univ.hal.science/hal-02183629Test

المؤلفون: Gironde, Alexandra, Poret, Marine, Etienne, Philippe, Trouverie, Jacques, Bouchereau, Alain, Le Cahérec, Françoise, Leport, Laurent, Orsel Baldwin, Mathilde, Niogret, Marie-Françoise, Deleu, Carole, Avice, Jean-Christophe

المساهمون: Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, Institut de Recherche en Horticulture et Semences (IRHS), Université d'Angers (UA)-Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, ANR-11-BTBR-0004,RAPSODYN,Optimisation de la teneur et du rendement en huile chez le colza cultivé sous contrainte azotée(2011)

المصدر: ISSN: 0022-0957.

مصطلحات موضوعية: nitrogen utilization efficiency, nitrogen use efficiency, nitrogen remobilization efficiency, genotypic variability, Brassica napus, amino acids, soluble proteins, nitrogen nutrition, remobilisation de l'azote, nutrition azotée, efficience d'utilisation de l'azote, azote foliaire, protéine soluble, [SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology

الوصف: International audience ; Oilseed rape, a crop requiring a high level of nitogen (N) fertilizers, is characterized by low N use efficiency. To identify the limiting factors involved in the N use efficiency of winter oilseed rape, the response to low N supply was investigated at the vegetative stage in 10 genotypes by using long-term pulse-chase (15)N labelling and studying the physiological processes of leaf N remobilization. Analysis of growth and components of N use efficiency allowed four profiles to be defined. Group 1 was characterized by an efficient N remobilization under low and high N conditions but by a decrease of leaf growth under N limitation. Group 2 showed a decrease in leaf growth under low N supply that was associated with a low N remobilization efficiency under both N supplies despite a high remobilization of soluble proteins. In response to N limitation, Group 3 is characterized by an increase in N use efficiency and leaf N remobilization compared with high N that is not sufficient to sustain the leaf biomass production at a similar level to non-limited plants. Genotypes of Group 4 subjected to low nitrate were able to maintain leaf growth to the same level as under high N. The profiling approach indicated that enhancement of amino acid export and soluble protein degradation was crucial for N remobilization improvement. At the whole-plant level, N fluxes revealed that Group 4 showed a high N remobilization in source leaves combined with a better N utilization in young leaves. Consequently, an enhanced N remobilization limits N loss in fallen leaves, but this remobilized N needs to be efficiently utilized in young leaves to improve N use efficiency.

العلاقة: info:eu-repo/semantics/altIdentifier/pmid/25792758; hal-01455972; https://hal.science/hal-01455972Test; PRODINRA: 305893; PUBMED: 25792758; WOS: 000354742200008

الإتاحة: https://doi.org/10.1093/jxb/erv031Test
https://hal.science/hal-01455972Test

المؤلفون: Anne Maillard, José-Maria Garcia-Mina, Maria Garnica, Philippe Etienne, Jean-Claude Yvin, Alain Ourry, Florence Cruz, Vincent Billard

المساهمون: Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), CHU Pontchaillou [Rennes], Timac Agro Spain, Agro Innovation International, Centre Mondial d'Innovation (CMI, Roullier) (CMI), Centre Mondial d'Innovation - Groupe Roullier (CMI ), Regional Council of Basse-Normandie, Timac Agro International, Institut National de la Recherche Agronomique (INRA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)

المصدر: Plant Physiology and Biochemistry
Plant Physiology and Biochemistry, Elsevier, 2015, 86, pp.66-71. ⟨10.1016/j.plaphy.2014.11.005⟩

مصطلحات موضوعية: Proteomics, Proteome, Physiology, Brassica, Biofortification, chemistry.chemical_element, Plant Science, Zinc, Manganese, Biology, High yielding, Plant Roots, Remobilization, Chloroplast Proteins, Ionomic, Zinc deficiency (plant disorder), Botany, Genetics, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Electrophoresis, Gel, Two-Dimensional, Biomass, Plant Proteins, 2. Zero hunger, Molybdenum, Zinc deficiency, Brassica napus, food and beverages, Proteomic, Biological Transport, biology.organism_classification, Plant Leaves, Human nutrition, chemistry

الوصف: International audience; The importance of zinc (Zn) has been of little concern in human nutrition despite a strong decrease of this element in crops since the rise of high yielding varieties. For better food quality, Zn biofortification can be used, but will be optimal only if mechanisms governing Zn management are better known. Using Zn deficiency, we are able to demonstrate that Zn is not remobilized in Brassica napus (B. napus). Thus, remobilization processes should not be targeted by biofortification strategies. This study also complemented previous work by investigating leaf responses to Zn deficiency, especially from proteomic and ionomic points of view, showing for example, an increase in Manganese (Mn) content and of the Mn-dependent protein, Oxygen Evolving Enhancer.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7086eddf88e0310ac8fa859e7a1b9393Test
https://hal-normandie-univ.archives-ouvertes.fr/hal-02183497Test

المؤلفون: Laurent Leport, Alain Bouchereau, François Mariette, Clément Sorin, Maja Musse

المساهمون: Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Food Proceeding Engineering Research Unit, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Université européenne de Bretagne - European University of Brittany (UEB), Regional Council of Bretagne, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), AGROCAMPUS OUEST-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Recherche Agronomique (INRA), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST

المصدر: Planta
Planta, Springer Verlag, 2015, 241 (2), pp.333-346. ⟨10.1007/s00425-014-2182-3⟩
Planta, 2015, 241 (2), pp.333-346. ⟨10.1007/s00425-014-2182-3⟩

مصطلحات موضوعية: Senescence, HYDRAULIC DESIGN, Membrane permeability, [SDV]Life Sciences [q-bio], Brassica, Plant Science, Biology, Nutrient, WATER STATUS, Gene Expression Regulation, Plant, Arabidopsis, Parenchyma, Botany, MEMBRANE-PERMEABILITY, Genetics, LEAF SENESCENCE, NUCLEAR-MAGNETIC-RESONANCE, Palisade, Cellular Senescence, Plant Proteins, Microscopy, Cell Enlargement, Brassica napus, PLANT DEVELOPMENT, food and beverages, Biological Transport, biology.organism_classification, ARABIDOPSIS, NITROGEN REMOBILIZATION, Plant Leaves, BRASSICA-NAPUS L, SPIN RELAXATION, NMR relaxometry, Oilseed rape

الوصف: International audience; Differential palisade and spongy parenchyma structural changes in oilseed rape leaf were demonstrated. These dismantling processes were linked to early senescence events and associated to remobilization processes. During leaf senescence, an ordered cell dismantling process allows efficient nutrient remobilization. However, in Brassica napus plants, an important amount of nitrogen (N) in fallen leaves is associated with low N remobilization efficiency (NRE). The leaf is a complex organ mainly constituted of palisade and spongy parenchyma characterized by different structures and functions concerning water relations and carbon fixation. The aim of the present study was to demonstrate a specific structural evolution of these parenchyma throughout natural senescence in B. napus, probably linked to differential nutrient remobilization processes. The study was performed on 340 leaves from 32 plants during an 8-week development period under controlled growing conditions. Water distribution and status at the cellular level were investigated by low-field proton nuclear magnetic resonance (NMR), while light and electron microscopy were used to observe cell and plast structure. Physiological parameters were determined on all leaves studied and used as indicators of leaf development and remobilization progress. The results revealed a process of hydration and cell enlargement of leaf tissues associated with senescence. Wide variations were observed in the palisade parenchyma while spongy cells changed only very slightly. The major new functional information revealed was the link between the early senescence events and specific tissue dismantling processes.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d8c62028778620765aeed54bc26bdc2Test
https://hal.archives-ouvertes.fr/hal-01208765Test