TLDR Arabidopsis PCaP2 helps plants survive drought by linking ABA and SA signals.
The study demonstrated that the Arabidopsis protein PCaP2 played a crucial role in plant water deficit tolerance by mediating crosstalk between abscisic acid (ABA) and salicylic acid (SA) signaling pathways. Overexpression of PCaP2 enhanced drought tolerance, while suppression led to increased sensitivity. PCaP2 influenced root hair growth, water absorption, and the expression of drought-responsive genes, highlighting its potential as a target for improving drought tolerance in crops.
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