Circadian clock signaling in Arabidopsis thaliana: from gene expression to physiology and development

The plant circadian clock is associated with complex systems that synchronize physiology with daily and seasonal environmental changes.

• Most organisms, including plants, have evolved an internal circadian clock to recognize 24-hour environmental fluctuations.
• The plant clock integrates light signaling pathways to anticipate environmental changes and measure day length.
• Significant advancements in genetic and molecular studies have clarified the organization and function of the circadian system, particularly in Arabidopsis thaliana.
• The core of the plant circadian oscillator operates through negative feedback loops, with additional regulatory mechanisms involved.
• New insights into the molecular mechanisms of the circadian clock enhance understanding of how plants coordinate their growth and development with environmental cycles.

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