Exploring nitrogen remobilization for seed filling using natural variation in Arabidopsis thaliana
| العنوان: | Exploring nitrogen remobilization for seed filling using natural variation in Arabidopsis thaliana |
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| المؤلفون: | Fabien Chardon, Céline Masclaux-Daubresse |
| المساهمون: | Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech |
| المصدر: | Journal of Experimental Botany Journal of Experimental Botany, Oxford University Press (OUP), 2011, 62 (6), pp.2131-2142. ⟨10.1093/jxb/erq405⟩ Journal of Experimental Botany 6 (62), 2131-2142. (2011) |
| بيانات النشر: | Oxford University Press (OUP), 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | 0106 biological sciences, leaf senescence, Physiology, trait loci analysis, variabilité génétique, Arabidopsis, Brassica, Biomass, Plant Science, maize, 01 natural sciences, grain protein, nitrogen use efficiency, zea mays, chemistry.chemical_compound, Nitrate, wheat, Arabidopsis thaliana, transformation génétique, GENETIQUE VEGETALE, nitrate uptake, azote, 2. Zero hunger, 0303 health sciences, biology, 15N, food and beverages, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, Research Papers, Nitrogen, Isotopes of nitrogen, Botanique, remobilization, Seeds, harvest index, genetic-variation, génotype, Botanics, recombinant inbred lines, maïs, chemistry.chemical_element, (15)N, 03 medical and health sciences, yield, use efficiency, concentration d'azote, Dry weight, graine, 030304 developmental biology, Nitrates, Nitrogen Isotopes, arabidopsis thaliana, Genetic Variation, 15. Life on land, biology.organism_classification, Carbon, Plant Leaves, chemistry, Agronomy, 010606 plant biology & botany |
| 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. |
| وصف الملف: | application/pdf |
| تدمد: | 1460-2431 0022-0957 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cd7ffce2b60066b869b66a5a74c671aTest https://doi.org/10.1093/jxb/erq405Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5cd7ffce2b60066b869b66a5a74c671a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14602431 00220957 |
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