Copper connections: coordinating transport, sensing and systemic signalling in plants

Area of Science:

• Plant Biology
• Nutrient Management
• Biochemistry

Background:

• Copper is vital for plant metabolism, development, and stress responses due to its redox properties.
• Labile copper acts as a signaling molecule, influencing plant development and environmental responses.
• Soil physicochemical factors affect copper bioavailability, challenging plant acquisition and homeostasis.

Purpose of the Study:

• To review current knowledge on copper homeostasis in plants.
• To discuss copper uptake strategies in different plant groups (dicots and non-grass monocots).
• To explore internal copper transport, tissue distribution, and systemic copper signaling.

Main Methods:

• Literature review of existing research on plant copper biology.
• Synthesis of information on copper uptake, transport, and signaling mechanisms.
• Analysis of factors influencing copper bioavailability and plant responses.

Main Results:

• Plants possess sophisticated mechanisms for regulating copper uptake, transport, and storage.
• Distinct strategies exist for copper acquisition in dicots versus non-grass monocots.
• Emerging evidence points to systemic copper signaling pathways.

Conclusions:

• Understanding plant copper homeostasis is crucial for enhancing crop nutrient use efficiency.
• Improving crop resilience in copper-deficient soils can be achieved by optimizing copper management.
• Further research into systemic copper signaling holds potential for agricultural applications.