Phosphorylation-dependent activation of MAP4K1/2 by OST1 mediates ABA-induced stomatal closure in Arabidopsis
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In higher plants, stomatal movements represent a critical physiological process that matains cellular water homestasis while enabling photosynthetic gas exchange. Open stomata 1 (OST1), a key protein kinase in the abscisic acid (ABA) signaling cascade, has bee... ...
