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Autophagy as a possible mechanism for micronutrient remobilization from leaves to seeds
- Source :
- Frontiers in Plant Science, Frontiers in Plant Science, Frontiers, 2014, 5, ⟨10.3389/fpls.2014.00011⟩, Frontiers in Plant Science, Vol 5 (2014), Frontiers in Plant Science (5), . (2014)
- Publication Year :
- 2014
- Publisher :
- HAL CCSD, 2014.
-
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.
- Subjects :
- Nutrient cycle
nutrient fluxes
leaf senescence
[SDV]Life Sciences [q-bio]
Biofortification
Context (language use)
autophagie
Plant Science
nutrient use efficiency
lcsh:Plant culture
Biology
transition metal
atg
fer
Mini Review Article
Nutrient
Botany
Zn
lcsh:SB1-1110
isotopic labeling
Nutrient allocation
2. Zero hunger
Mechanism (biology)
zinc
Autophagy
food and beverages
Micronutrient
Fe
Subjects
Details
- Language :
- English
- ISSN :
- 1664462X
- Database :
- OpenAIRE
- Journal :
- Frontiers in Plant Science, Frontiers in Plant Science, Frontiers, 2014, 5, ⟨10.3389/fpls.2014.00011⟩, Frontiers in Plant Science, Vol 5 (2014), Frontiers in Plant Science (5), . (2014)
- Accession number :
- edsair.doi.dedup.....6c5580886dea6ded46beab28d4477fbb