How DNA packaging and gene editing control the daily biological clock in Arabidopsis

Circadian clocks regulate 24-h rhythms in metabolism and physiology through rhythmic gene expression in multicellular organisms.

• Circadian clocks are internal mechanisms that respond to environmental cues to maintain rhythmic patterns.
• Gene expression is precisely regulated at the core of the circadian oscillator, affecting transcriptional activity across multicellular organisms.
• In plants, there is a sophisticated interaction between circadian gene expression and changes in chromatin structure and histone modifications.
• Alternative pre-messenger RNA splicing is identified as a key component of the circadian system, enabling adaptability in clock regulation.
• The review compares the plant circadian clock's relationship with chromatin remodeling and splicing to similar systems in animals.

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