Handing off iron to the next generation: how does it get into seeds and what for?
| Autor: | Stéphane Mari, Sébastien Thomine, Christophe Bailly |
|---|---|
| Přispěvatelé: | Biochimie et Physiologie Moléculaire des Plantes (BPMP), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire de Biologie du Développement de Villefranche sur mer (LBDV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-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), ANR-16-CE20-0019,ISISTOR,Amélioration du contenu en fer de la graine(2016), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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) |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
[SDV]Life Sciences [q-bio] Iron Biofortification Arabidopsis Fe content Germination Photosynthesis 01 natural sciences Biochemistry biofortification Oxidative damage 03 medical and health sciences Human health Nutrient Gene Expression Regulation Plant [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Molecular Biology 030304 developmental biology 2. Zero hunger 0303 health sciences vacuole biology Chemistry food and beverages Cell Biology biology.organism_classification remobilization nutrition Agronomy Seedling Seedlings Seeds seed 010606 plant biology & botany |
| Zdroj: | Biochemical Journal Biochemical Journal, 2020, 477 (1), pp.259--274. ⟨10.1042/BCJ20190188⟩ Biochemical Journal, Portland Press, 2020, 477 (1), pp.259--274. ⟨10.1042/BCJ20190188⟩ |
| ISSN: | 1470-8728 0264-6021 |
| Popis: | International audience; To ensure the success of the new generation in annual species, the mother plant transfers a large proportion of the nutrients it has accumulated during its vegetative life to the next generation through its seeds. Iron (Fe) is required in large amounts to provide the energy and redox power to sustain seedling growth. However, free Fe is highly toxic as it leads to the generation of reactive oxygen species. Fe must, therefore, be tightly bound to chelating molecules to allow seed survival for long periods of time without oxidative damage. Nevertheless, when conditions are favorable, the seed's Fe stores have to be readily remobilized to achieve the transition toward active photosynthesis before the seedling becomes able to take up Fe from the environment. This is likely critical for the vigor of the young plant. Seeds constitute an important dietary source of Fe, which is essential for human health. Understanding the mechanisms of Fe storage in seeds is a key to improve their Fe content and availability in order to fight Fe deficiency. Seed longevity, germination efficiency and seedling vigor are also important traits that may be affected by the chemical form under which Fe is stored. In this review, we summarize the current knowledge on seed Fe loading during development, long-term storage and remobilization upon germination. We highlight how this knowledge may help seed Fe biofortification and discuss how Fe storage may affect the seed quality and germination efficiency. |
| Databáze: | OpenAIRE |
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