Intracellular transition metal homeostasis in plants and algae

Solti, Ádám and Tóth, Brigitta and Hauser, Marie-Theres (2024) Intracellular transition metal homeostasis in plants and algae. FRONTIERS IN PLANT SCIENCE, 15. ISSN 1664-462X

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Abstract

Essential transition metals like copper, iron, manganese, molybdenum, and zinc are vital cofactors in plant and algal redox reactions. However, improper accumulation or interfering non-essential metals generate free radicals, disrupting metabolic and membrane functions. Efficient intracellular metal homeostasis relies on complex sensing, transport, and regulatory networks. Recent research highlights iron sensing by RING domain-containing proteins, bHLH transcription factor cascades, plastidial iron uptake, and zinc metallochaperones. Furthermore, non-essential metals trigger epigenetic and epitranscriptomic alterations, such as histone modification and DNA methylation, impacting metal resilience. Future progress depends on multi-omics integration and advanced spectroscopic methods to characterize plant metalloproteomes.

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