A quick journey into the diversity of iron uptake strategies in photosynthetic organisms - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Plant Signaling and Behavior Year : 2021

A quick journey into the diversity of iron uptake strategies in photosynthetic organisms

Abstract

Iron (Fe) is involved in multiple processes that contribute to the maintenance of the cellular homeostasis of all living beings. In photosynthetic organisms, Fe is notably required for photosynthesis. Although iron is generally abundant in the environment, it is frequently poorly bioavailable. This review focuses on the molecular strategies that photosynthetic organisms have evolved to optimize iron acquisition, using Arabidopsis thaliana, rice (Oryza sativa), and some unicellular algae as models. Non-graminaceous plants, including Arabidopsis, take up iron from the soil by an acidification-reduction-transport process (strategy I) requiring specific proteins that were recently shown to associate in a dedicated complex. On the other hand, graminaceous plants, such as rice, use the so-called strategy II to acquire iron, which relies on the uptake of Fe3+ chelated by phytosiderophores that are secreted by the plant into the rhizosphere. However, apart these main strategies, accessory mechanisms contribute to robust iron uptake in both Arabidopsis and rice. Unicellular algae combine reductive and non-reductive mechanisms for iron uptake and present important specificities compared to land plants. Since the majority of the molecular actors required for iron acquisition in algae are not conserved in land plants, questions arise about the evolution of the Fe uptake processes upon land colonization.
Fichier principal
Vignette du fichier
Martin Barranco et al 2021.pdf (2.53 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03358737 , version 1 (08-11-2021)

Identifiers

Cite

Amanda Martín-Barranco, Sébastien Thomine, Grégory Vert, Enric Zelazny. A quick journey into the diversity of iron uptake strategies in photosynthetic organisms. Plant Signaling and Behavior, 2021, ⟨10.1080/15592324.2021.1975088⟩. ⟨hal-03358737⟩
157 View
127 Download

Altmetric

Share

Gmail Facebook X LinkedIn More