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Pottier M, Masclaux-Daubresse C, Yoshimoto K, et al. Autophagy as a possible mechanism for micronutrient remobilization from leaves to seeds. Front Plant Sci. 2014;5:11doi: 10.3389/fpls.2014.00011.
Pottier, M., Masclaux-Daubresse, C., Yoshimoto, K., & Thomine, S. (2014). Autophagy as a possible mechanism for micronutrient remobilization from leaves to seeds. Frontiers in plant science, 511. https://doi.org/10.3389/fpls.2014.00011
Pottier, Mathieu, et al. "Autophagy as a possible mechanism for micronutrient remobilization from leaves to seeds." Frontiers in plant science vol. 5 (2014): 11. doi: https://doi.org/10.3389/fpls.2014.00011
Pottier M, Masclaux-Daubresse C, Yoshimoto K, Thomine S. Autophagy as a possible mechanism for micronutrient remobilization from leaves to seeds. Front Plant Sci. 2014 Jan 24;5:11. doi: 10.3389/fpls.2014.00011. eCollection 2014. PMID: 24478789; PMCID: PMC3900762.
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Front Plant Sci. 2014 Jan 24;5:11. doi: 10.3389/fpls.2014.00011. eCollection 2014.

Autophagy as a possible mechanism for micronutrient remobilization from leaves to seeds.

Frontiers in plant science

Mathieu Pottier, Céline Masclaux-Daubresse, Kohki Yoshimoto, Sébastien Thomine

Affiliations

  1. Institut des Sciences du Végétal-UPR2355, Saclay Plant Sciences, CNRS, Gif-sur-Yvette France.
  2. Institut Jean-Pierre Bourgin-UMR1318, Saclay Plant Sciences, Institut National de la Recherche Agronomique Versailles, France ; Institut Jean-Pierre Bourgin-UMR1318, Saclay Plant Sciences, AgroParisTech, Versailles France.

PMID: 24478789 PMCID: PMC3900762 DOI: 10.3389/fpls.2014.00011

Abstract

Seed formation is an important step of plant development which depends on nutrient allocation. Uptake from soil is an obvious source of nutrients which mainly occurs during vegetative stage. Because seed filling and leaf senescence are synchronized, subsequent mobilization of nutrients from vegetative organs also play an essential role in nutrient use efficiency, providing source-sink relationships. However, nutrient accumulation during the formation of seeds may be limited by their availability in source tissues. While several mechanisms contributing to make leaf macronutrients available were already described, little is known regarding micronutrients such as metals. Autophagy, which is involved in nutrient recycling, was already shown to play a critical role in nitrogen remobilization to seeds during leaf senescence. Because it is a non-specific mechanism, it could also control remobilization of metals. This article reviews actors and processes involved in metal remobilization with emphasis on autophagy and methodology to study metal fluxes inside the plant. A better understanding of metal remobilization is needed to improve metal use efficiency in the context of biofortification.

Keywords: Fe; Zn; atg; isotopic labeling; leaf senescence; nutrient fluxes; nutrient use efficiency; transition metal

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