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1دورية أكاديمية
المساهمون: Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris-Saclay, Approches intégratives du Transport Ionique (MINION), Département Biologie Cellulaire (BioCell), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Département Biochimie, Biophysique et Biologie Structurale (B3S), ANR-16-CE20-0019,ISISTOR,Amélioration du contenu en fer de la graine(2016)
المصدر: ISSN: 0022-0957.
مصطلحات موضوعية: iron loading, iron recycling, leaf senescence, metal, remobilization, 57Fe, premature senescence, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: International audience ; Micronutrient deficiencies affect a large part of the world’s population. These deficiencies are mostly due to the consumption of grains with insufficient content of iron (Fe) or zinc (Zn). Both de novo uptake by roots and recycling from leaves may provide seeds with nutrients. Autophagy, which is a conserved mechanism for nutrient recycling in eukaryotes, was shown to be involved in nitrogen remobilization to seeds. Here, we have investigated the role of this mechanism in micronutrient translocation to seeds. We found that Arabidopsis thaliana plants impaired in autophagy display defects in nutrient remobilization to seeds. In the atg5-1 mutant, which is completely defective in autophagy, the efficiency of Fe translocation from vegetative organs to seeds was severely decreased even when Fe was provided during seed formation. Combining atg5-1 with the sid2 mutation that counteracts premature senescence associated with autophagy deficiency and using 57Fe pulse labeling, we propose a two-step mechanism in which Fe taken up de novo during seed formation is first accumulated in vegetative organs and subsequently remobilized to seeds. Finally, we show that translocation of Zn and manganese (Mn) to seeds is also dependent on autophagy. Fine-tuning autophagy during seed formation opens up new possibilities to improve micronutrient remobilization to seeds
العلاقة: info:eu-repo/semantics/altIdentifier/pmid/30395253; hal-02173634; https://hal.science/hal-02173634Test; https://hal.science/hal-02173634/documentTest; https://hal.science/hal-02173634/file/ery388.pdfTest; PRODINRA: 468557; PUBMED: 30395253; PUBMEDCENTRAL: PMC6363094; WOS: 000459350700013
الإتاحة: https://doi.org/10.1093/jxb/ery388Test
https://hal.science/hal-02173634Test
https://hal.science/hal-02173634/documentTest
https://hal.science/hal-02173634/file/ery388.pdfTest -
2دورية أكاديمية
المساهمون: Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris-Saclay, Approches intégratives du Transport Ionique (MINION), Département Biologie Cellulaire (BioCell), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Département Biochimie, Biophysique et Biologie Structurale (B3S), ANR-16-CE20-0019,ISISTOR,Amélioration du contenu en fer de la graine(2016)
المصدر: ISSN: 0022-0957.
مصطلحات موضوعية: iron loading, iron recycling, leaf senescence, metal, remobilization, 57Fe, premature senescence, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: International audience ; Micronutrient deficiencies affect a large part of the world’s population. These deficiencies are mostly due to the consumption of grains with insufficient content of iron (Fe) or zinc (Zn). Both de novo uptake by roots and recycling from leaves may provide seeds with nutrients. Autophagy, which is a conserved mechanism for nutrient recycling in eukaryotes, was shown to be involved in nitrogen remobilization to seeds. Here, we have investigated the role of this mechanism in micronutrient translocation to seeds. We found that Arabidopsis thaliana plants impaired in autophagy display defects in nutrient remobilization to seeds. In the atg5-1 mutant, which is completely defective in autophagy, the efficiency of Fe translocation from vegetative organs to seeds was severely decreased even when Fe was provided during seed formation. Combining atg5-1 with the sid2 mutation that counteracts premature senescence associated with autophagy deficiency and using 57Fe pulse labeling, we propose a two-step mechanism in which Fe taken up de novo during seed formation is first accumulated in vegetative organs and subsequently remobilized to seeds. Finally, we show that translocation of Zn and manganese (Mn) to seeds is also dependent on autophagy. Fine-tuning autophagy during seed formation opens up new possibilities to improve micronutrient remobilization to seeds
العلاقة: info:eu-repo/semantics/altIdentifier/pmid/30395253; hal-02173634; https://hal.science/hal-02173634Test; https://hal.science/hal-02173634/documentTest; https://hal.science/hal-02173634/file/ery388.pdfTest; PRODINRA: 468557; PUBMED: 30395253; PUBMEDCENTRAL: PMC6363094; WOS: 000459350700013
الإتاحة: https://doi.org/10.1093/jxb/ery388Test
https://hal.science/hal-02173634Test
https://hal.science/hal-02173634/documentTest
https://hal.science/hal-02173634/file/ery388.pdfTest -
3دورية أكاديمية
المساهمون: Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris-Saclay, Approches intégratives du Transport Ionique (MINION), Département Biologie Cellulaire (BioCell), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Département Biochimie, Biophysique et Biologie Structurale (B3S), ANR-16-CE20-0019,ISISTOR,Amélioration du contenu en fer de la graine(2016)
المصدر: ISSN: 0022-0957.
مصطلحات موضوعية: iron loading, iron recycling, leaf senescence, metal, remobilization, 57Fe, premature senescence, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: International audience ; Micronutrient deficiencies affect a large part of the world’s population. These deficiencies are mostly due to the consumption of grains with insufficient content of iron (Fe) or zinc (Zn). Both de novo uptake by roots and recycling from leaves may provide seeds with nutrients. Autophagy, which is a conserved mechanism for nutrient recycling in eukaryotes, was shown to be involved in nitrogen remobilization to seeds. Here, we have investigated the role of this mechanism in micronutrient translocation to seeds. We found that Arabidopsis thaliana plants impaired in autophagy display defects in nutrient remobilization to seeds. In the atg5-1 mutant, which is completely defective in autophagy, the efficiency of Fe translocation from vegetative organs to seeds was severely decreased even when Fe was provided during seed formation. Combining atg5-1 with the sid2 mutation that counteracts premature senescence associated with autophagy deficiency and using 57Fe pulse labeling, we propose a two-step mechanism in which Fe taken up de novo during seed formation is first accumulated in vegetative organs and subsequently remobilized to seeds. Finally, we show that translocation of Zn and manganese (Mn) to seeds is also dependent on autophagy. Fine-tuning autophagy during seed formation opens up new possibilities to improve micronutrient remobilization to seeds
العلاقة: info:eu-repo/semantics/altIdentifier/pmid/30395253; hal-02173634; https://hal.science/hal-02173634Test; https://hal.science/hal-02173634/documentTest; https://hal.science/hal-02173634/file/ery388.pdfTest; PRODINRA: 468557; PUBMED: 30395253; PUBMEDCENTRAL: PMC6363094; WOS: 000459350700013
الإتاحة: https://doi.org/10.1093/jxb/ery388Test
https://hal.science/hal-02173634Test
https://hal.science/hal-02173634/documentTest
https://hal.science/hal-02173634/file/ery388.pdfTest -
4دورية أكاديمية
المساهمون: Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris-Saclay, Approches intégratives du Transport Ionique (MINION), Département Biologie Cellulaire (BioCell), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Département Biochimie, Biophysique et Biologie Structurale (B3S), ANR-16-CE20-0019,ISISTOR,Amélioration du contenu en fer de la graine(2016)
المصدر: ISSN: 0022-0957.
مصطلحات موضوعية: iron loading, iron recycling, leaf senescence, metal, remobilization, 57Fe, premature senescence, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: International audience ; Micronutrient deficiencies affect a large part of the world’s population. These deficiencies are mostly due to the consumption of grains with insufficient content of iron (Fe) or zinc (Zn). Both de novo uptake by roots and recycling from leaves may provide seeds with nutrients. Autophagy, which is a conserved mechanism for nutrient recycling in eukaryotes, was shown to be involved in nitrogen remobilization to seeds. Here, we have investigated the role of this mechanism in micronutrient translocation to seeds. We found that Arabidopsis thaliana plants impaired in autophagy display defects in nutrient remobilization to seeds. In the atg5-1 mutant, which is completely defective in autophagy, the efficiency of Fe translocation from vegetative organs to seeds was severely decreased even when Fe was provided during seed formation. Combining atg5-1 with the sid2 mutation that counteracts premature senescence associated with autophagy deficiency and using 57Fe pulse labeling, we propose a two-step mechanism in which Fe taken up de novo during seed formation is first accumulated in vegetative organs and subsequently remobilized to seeds. Finally, we show that translocation of Zn and manganese (Mn) to seeds is also dependent on autophagy. Fine-tuning autophagy during seed formation opens up new possibilities to improve micronutrient remobilization to seeds
العلاقة: info:eu-repo/semantics/altIdentifier/pmid/30395253; hal-02173634; https://hal.science/hal-02173634Test; https://hal.science/hal-02173634/documentTest; https://hal.science/hal-02173634/file/ery388.pdfTest; PRODINRA: 468557; PUBMED: 30395253; PUBMEDCENTRAL: PMC6363094; WOS: 000459350700013
الإتاحة: https://doi.org/10.1093/jxb/ery388Test
https://hal.science/hal-02173634Test
https://hal.science/hal-02173634/documentTest
https://hal.science/hal-02173634/file/ery388.pdfTest -
5دورية أكاديمية
المساهمون: Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris-Saclay, Approches intégratives du Transport Ionique (MINION), Département Biologie Cellulaire (BioCell), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Département Biochimie, Biophysique et Biologie Structurale (B3S), ANR-16-CE20-0019,ISISTOR,Amélioration du contenu en fer de la graine(2016)
المصدر: ISSN: 0022-0957.
مصطلحات موضوعية: iron loading, iron recycling, leaf senescence, metal, remobilization, 57Fe, premature senescence, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: International audience ; Micronutrient deficiencies affect a large part of the world’s population. These deficiencies are mostly due to the consumption of grains with insufficient content of iron (Fe) or zinc (Zn). Both de novo uptake by roots and recycling from leaves may provide seeds with nutrients. Autophagy, which is a conserved mechanism for nutrient recycling in eukaryotes, was shown to be involved in nitrogen remobilization to seeds. Here, we have investigated the role of this mechanism in micronutrient translocation to seeds. We found that Arabidopsis thaliana plants impaired in autophagy display defects in nutrient remobilization to seeds. In the atg5-1 mutant, which is completely defective in autophagy, the efficiency of Fe translocation from vegetative organs to seeds was severely decreased even when Fe was provided during seed formation. Combining atg5-1 with the sid2 mutation that counteracts premature senescence associated with autophagy deficiency and using 57Fe pulse labeling, we propose a two-step mechanism in which Fe taken up de novo during seed formation is first accumulated in vegetative organs and subsequently remobilized to seeds. Finally, we show that translocation of Zn and manganese (Mn) to seeds is also dependent on autophagy. Fine-tuning autophagy during seed formation opens up new possibilities to improve micronutrient remobilization to seeds
العلاقة: info:eu-repo/semantics/altIdentifier/pmid/30395253; hal-02173634; https://hal.science/hal-02173634Test; https://hal.science/hal-02173634/documentTest; https://hal.science/hal-02173634/file/ery388.pdfTest; PRODINRA: 468557; PUBMED: 30395253; PUBMEDCENTRAL: PMC6363094; WOS: 000459350700013
الإتاحة: https://doi.org/10.1093/jxb/ery388Test
https://hal.science/hal-02173634Test
https://hal.science/hal-02173634/documentTest
https://hal.science/hal-02173634/file/ery388.pdfTest -
6دورية أكاديمية
المؤلفون: Merah, Othmane, Monneveux, Philippe
المساهمون: Chimie Agro-Industrielle (CAI), Institut National de la Recherche Agronomique (INRA)-Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques (ENSIACET), Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT), Centro Internacional de la Papa
المصدر: ISSN: 0931-2250.
مصطلحات موضوعية: Source–sink manipulations, Triticum turgidumvar. durum, Photosynthesis, Remobilization, Carbon isotope discrimination, Grain filling, [SDV.SA]Life Sciences [q-bio]/Agricultural sciences, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: International audience ; Under Mediterranean conditions, drought affects cereals production principally through a limitation of grain filling. In this study, the respective role of post‐anthesis photosynthesis and carbon remobilization and the contribution of flag leaf, stem, chaff and awns to grain filling were evaluated under Mediterranean conditions in durum wheat (Triticum turgidum var. durum) cultivars. For the purpose, we examined the effects of shading and excision of different parts of the plant and compared carbon isotope discrimination (Δ) in dry matter of flag leaf, stem, chaff, awns and grain at maturity and in sap of stem, flag leaf, chaff and awns, this last measurement providing information on photosynthesis during a short period preceding sampling. Source–sink manipulations and isotopic imprints of different organs on final isotope composition of the grain confirmed the high contribution of both carbons assimilated by ears and remobilized from stems to grain filling, and the relatively low contribution of leaves to grain filling. Grain Δ was highly and significantly associated with grain yield across treatments, suggesting the utilization of this trait as an indicator of source–sink manipulations effects on grain yield. Chaff and awns Δ were better correlated with grain Δ than stem and leaf Δ, indicating that chaff were more involved in grain filling than other organs. Moreover, in chaff, sap Δ was highly significantly correlated with dry matter Δ. These results suggest the use of Δ for a rapid and non‐destructive estimation of the variation in the contribution of different organs to grain filling.
العلاقة: hal-02528969; https://hal.science/hal-02528969Test; https://hal.science/hal-02528969/documentTest; https://hal.science/hal-02528969/file/Merah_25443.pdfTest; OATAO: 25443; PRODINRA: 336450; WOS: 000360762900003
الإتاحة: https://doi.org/10.1111/jac.12109Test
https://hal.science/hal-02528969Test
https://hal.science/hal-02528969/documentTest
https://hal.science/hal-02528969/file/Merah_25443.pdfTest -
7دورية أكاديمية
المؤلفون: Merah, Othmane, Monneveux, Philippe
المساهمون: Chimie Agro-Industrielle (CAI), Institut National de la Recherche Agronomique (INRA)-Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques (ENSIACET), Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT), Centro Internacional de la Papa
المصدر: ISSN: 0931-2250.
مصطلحات موضوعية: Source–sink manipulations, Triticum turgidumvar. durum, Photosynthesis, Remobilization, Carbon isotope discrimination, Grain filling, [SDV.SA]Life Sciences [q-bio]/Agricultural sciences, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: International audience ; Under Mediterranean conditions, drought affects cereals production principally through a limitation of grain filling. In this study, the respective role of post‐anthesis photosynthesis and carbon remobilization and the contribution of flag leaf, stem, chaff and awns to grain filling were evaluated under Mediterranean conditions in durum wheat (Triticum turgidum var. durum) cultivars. For the purpose, we examined the effects of shading and excision of different parts of the plant and compared carbon isotope discrimination (Δ) in dry matter of flag leaf, stem, chaff, awns and grain at maturity and in sap of stem, flag leaf, chaff and awns, this last measurement providing information on photosynthesis during a short period preceding sampling. Source–sink manipulations and isotopic imprints of different organs on final isotope composition of the grain confirmed the high contribution of both carbons assimilated by ears and remobilized from stems to grain filling, and the relatively low contribution of leaves to grain filling. Grain Δ was highly and significantly associated with grain yield across treatments, suggesting the utilization of this trait as an indicator of source–sink manipulations effects on grain yield. Chaff and awns Δ were better correlated with grain Δ than stem and leaf Δ, indicating that chaff were more involved in grain filling than other organs. Moreover, in chaff, sap Δ was highly significantly correlated with dry matter Δ. These results suggest the use of Δ for a rapid and non‐destructive estimation of the variation in the contribution of different organs to grain filling.
العلاقة: hal-02528969; https://hal.science/hal-02528969Test; https://hal.science/hal-02528969/documentTest; https://hal.science/hal-02528969/file/Merah_25443.pdfTest; OATAO: 25443; PRODINRA: 336450; WOS: 000360762900003
الإتاحة: https://doi.org/10.1111/jac.12109Test
https://hal.science/hal-02528969Test
https://hal.science/hal-02528969/documentTest
https://hal.science/hal-02528969/file/Merah_25443.pdfTest -
8دورية أكاديمية
المؤلفون: Merah, Othmane, MONNEVEUX, Philippe
المساهمون: Chimie Agro-Industrielle (CAI), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques-Institut National de la Recherche Agronomique (INRA), Centro Internacional de la Papa
المصدر: ISSN: 0931-2250.
مصطلحات موضوعية: Remobilization, Carbon isotope discrimination, Grain filling, Photosynthesis, Triticum turgidumvar. durum, Source–sink manipulations, [SDV.SA]Life Sciences [q-bio]/Agricultural sciences, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: International audience ; Under Mediterranean conditions, drought affects cereals production principally through a limitation of grain filling. In this study, the respective role of post‐anthesis photosynthesis and carbon remobilization and the contribution of flag leaf, stem, chaff and awns to grain filling were evaluated under Mediterranean conditions in durum wheat (Triticum turgidum var. durum) cultivars. For the purpose, we examined the effects of shading and excision of different parts of the plant and compared carbon isotope discrimination (Δ) in dry matter of flag leaf, stem, chaff, awns and grain at maturity and in sap of stem, flag leaf, chaff and awns, this last measurement providing information on photosynthesis during a short period preceding sampling. Source–sink manipulations and isotopic imprints of different organs on final isotope composition of the grain confirmed the high contribution of both carbons assimilated by ears and remobilized from stems to grain filling, and the relatively low contribution of leaves to grain filling. Grain Δ was highly and significantly associated with grain yield across treatments, suggesting the utilization of this trait as an indicator of source–sink manipulations effects on grain yield. Chaff and awns Δ were better correlated with grain Δ than stem and leaf Δ, indicating that chaff were more involved in grain filling than other organs. Moreover, in chaff, sap Δ was highly significantly correlated with dry matter Δ. These results suggest the use of Δ for a rapid and non‐destructive estimation of the variation in the contribution of different organs to grain filling.
العلاقة: hal-02528969; https://hal.archives-ouvertes.fr/hal-02528969Test; https://hal.archives-ouvertes.fr/hal-02528969/documentTest; https://hal.archives-ouvertes.fr/hal-02528969/file/Merah_25443.pdfTest; OATAO: 25443; PRODINRA: 336450; WOS: 000360762900003
الإتاحة: https://doi.org/10.1111/jac.12109Test
https://hal.archives-ouvertes.fr/hal-02528969Test
https://hal.archives-ouvertes.fr/hal-02528969/documentTest
https://hal.archives-ouvertes.fr/hal-02528969/file/Merah_25443.pdfTest -
9دورية أكاديمية
المؤلفون: Masclaux-Daubresse, Celine, Chardon, Fabien
المساهمون: Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech
المصدر: ISSN: 0022-0957.
مصطلحات موضوعية: (15)N, harvest index, nitrogen use efficiency, remobilization, yield, recombinant inbred lines, trait loci analysis, leaf senescence, use efficiency, genetic-variation, nitrate uptake, grain protein, maize, wheat, GENETIQUE VEGETALE, concentration d'azote, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: Nineteen Arabidopsis accessions grown at low (LOW N) and high (HIGH N) nitrate supplies were labelled using (15)N to trace nitrogen remobilization to the seeds. Effects of genotype and nutrition were examined. Nitrate availability affected biomass and yield, and highly modified the nitrogen concentration in the dry remains. Surprisingly, variations of one-seed dry weight (DW(1S)) and harvest index (HI) were poorly affected by nutrition. Nitrogen harvest index (NHI) was highly correlated with HI and showed that nitrogen use efficiency (NUE) was increased at LOW N. Nitrogen remobilization efficiency (NRE), as (15)N partitioning in seeds ((15)NHI), was also higher at LOW N. The relative specific abundance (RSA) in seeds and whole plants indicated that the (14)NO(3) absorbed post-labelling was mainly allocated to the seeds (SEEDS) at LOW N, but to the dry remains (DR) at HIGH N. Nitrogen concentration (N%) in the DR was then 4-fold higher at HIGH N compared with LOW N, whilst N% in seeds was poorly modified. Although NHI and (15)NHI were highly correlated to HI, significant variations in NUE and NRE were identified using normalization to HI. 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.
العلاقة: hal-01019350; https://hal.science/hal-01019350Test; https://hal.science/hal-01019350/documentTest; https://hal.science/hal-01019350/file/47997_20111005083645547_1.pdfTest; PRODINRA: 47997; WOS: 000288553000032
الإتاحة: https://doi.org/10.1093/jxb/erq405Test
https://hal.science/hal-01019350Test
https://hal.science/hal-01019350/documentTest
https://hal.science/hal-01019350/file/47997_20111005083645547_1.pdfTest -
10دورية أكاديمية
المؤلفون: Masclaux-Daubresse, Celine, Chardon, Fabien
المساهمون: Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech
المصدر: ISSN: 0022-0957.
مصطلحات موضوعية: (15)N, harvest index, nitrogen use efficiency, remobilization, yield, recombinant inbred lines, trait loci analysis, leaf senescence, use efficiency, genetic-variation, nitrate uptake, grain protein, maize, wheat, GENETIQUE VEGETALE, concentration d'azote, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
الوصف: Nineteen Arabidopsis accessions grown at low (LOW N) and high (HIGH N) nitrate supplies were labelled using (15)N to trace nitrogen remobilization to the seeds. Effects of genotype and nutrition were examined. Nitrate availability affected biomass and yield, and highly modified the nitrogen concentration in the dry remains. Surprisingly, variations of one-seed dry weight (DW(1S)) and harvest index (HI) were poorly affected by nutrition. Nitrogen harvest index (NHI) was highly correlated with HI and showed that nitrogen use efficiency (NUE) was increased at LOW N. Nitrogen remobilization efficiency (NRE), as (15)N partitioning in seeds ((15)NHI), was also higher at LOW N. The relative specific abundance (RSA) in seeds and whole plants indicated that the (14)NO(3) absorbed post-labelling was mainly allocated to the seeds (SEEDS) at LOW N, but to the dry remains (DR) at HIGH N. Nitrogen concentration (N%) in the DR was then 4-fold higher at HIGH N compared with LOW N, whilst N% in seeds was poorly modified. Although NHI and (15)NHI were highly correlated to HI, significant variations in NUE and NRE were identified using normalization to HI. 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.
العلاقة: hal-01019350; https://hal.archives-ouvertes.fr/hal-01019350Test; https://hal.archives-ouvertes.fr/hal-01019350/documentTest; https://hal.archives-ouvertes.fr/hal-01019350/file/47997_20111005083645547_1.pdfTest; PRODINRA: 47997; WOS: 000288553000032
الإتاحة: https://doi.org/10.1093/jxb/erq405Test
https://hal.archives-ouvertes.fr/hal-01019350Test
https://hal.archives-ouvertes.fr/hal-01019350/documentTest
https://hal.archives-ouvertes.fr/hal-01019350/file/47997_20111005083645547_1.pdfTest
