4.7 Article

Iron transport mechanisms and their evolution focusing on chloroplasts

Journal

JOURNAL OF PLANT PHYSIOLOGY
Volume 288, Issue -, Pages -

Publisher

ELSEVIER GMBH
DOI: 10.1016/j.jplph.2023.154059

Keywords

Arabidopsis; Chlamydomonas; Cyanobacteria; Fe transport; Chloroplast

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This article focuses on the importance of iron in photosynthesis, particularly the iron transport mechanisms in chloroplasts. By comparing the iron transport processes in the evolutionary ancestors of chloroplasts and in modern plants, the review summarizes the role of chloroplasts in cellular iron homeostasis and the evolutionary modifications of iron transporters and mechanisms.
Iron (Fe) is an essential element for photosynthetic organisms, required for several vital biological functions. Photosynthesis, which takes place in the chloroplasts of higher plants, is the major Fe consumer. Although the components of the root Fe uptake system in dicotyledonous and monocotyledonous plants have been extensively studied, the Fe transport mechanisms of chloroplasts in these two groups of plants have received little attention. This review focuses on the comparative analysis of Fe transport processes in the evolutionary ancestors of chloroplasts (cyanobacteria) with the processes in embryophytes and green algae (Viridiplantae). The aim is to summarize how chloroplasts are integrated into cellular Fe homeostasis and how Fe transporters and Fe transport mechanisms have been modified by evolution.

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