Prolonged cold exposure enhances regeneration potential in Arabidopsis.

Prolonged cold exposure boosts Arabidopsis regeneration by 50% through epigenetic activation of key developmental genes.

• Why it matters: Understanding how environmental factors like cold influence plant regeneration can improve agricultural practices and plant resilience strategies, yet the underlying mechanisms remain unclear.
• What they did: The study examined Arabidopsis plants subjected to extended cold, focusing on the role of cold-responsive transcription factors CBF1, CBF2, and CBF3, and their interaction with the histone acetyltransferase HAG1 to regulate regeneration genes.
• The result: Findings reveal that cold-induced CBFs recruit HAG1 to promote histone acetylation at regeneration loci such as WOX5, thereby enhancing regenerative capacity and demonstrating an epigenetic pathway for environmental adaptation.