Chloroplast magnesium transporters play essential but differential roles in maintaining magnesium homeostasis.

ABSTRACT: Magnesium (Mg²⁺) is essential for photosynthesis in the chloroplasts of land plants and algae. Being the central ion of chlorophyll, cofactor and activator of many photosynthetic enzymes including RuBisCO, magnesium-deficient plants may suffer from leaf chlorosis symptoms and retarded growth. Therefore, the chloroplast Mg²⁺ concentration is tightly controlled by magnesium transport proteins. Recently, three different transporters from two distinct families have been identified in the chloroplast inner envelope of the model plant Arabidopsis thaliana: MGT10, MGR8, and MGR9. Here, we assess the individual roles of these three proteins in maintaining chloroplast Mg²⁺ homeostasis and regulating photosynthesis, and if their role is conserved in the model

SUBMITTER: Dukic E 

PROVIDER: S-EPMC10484576 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature