REF1: A breakthrough peptide signal unlocking plant regeneration and transformation
Keywords:
Plant regeneration, Plant transformation, PORK1, REF1, SIWIND1, Tissue cultureAbstract
This commentary highlights the groundbreaking discovery of REGENERATION FACTOR1 (REF1), a peptide that acts as a pivotal local wound signal promoting plant regeneration and transformation. REF1, perceived by the receptor kinase PORK1, activates the transcription factor SIWIND1 to drive callus formation and shoot regeneration. Unlike systemin, REF1 independently regulates local defense and regenerative pathways. The REF1-PORK1-SIWIND1 signaling module enhances regeneration efficiency in recalcitrant crops such as tomato and soybean, offering a promising strategy for agricultural biotechnology and crop improvement through enhanced transformation and regeneration.
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