Abstract
AbstractProtein tyrosine phosphorylation plays a central role in many signaling pathways leading to cell growth and differentiation in animals. However, the cellular roles for tyrosine phosphorylation in plant remain unclear. Here we describe that tyrosine phosphorylation involved in stomata closing pathway. Genistein, an inhibitor of protein tyrosine kinases (PTKs), could prevent darkness and abscisic acid (ABA)-induced stomatal closure of Vicia faba L. Stomatal closure induced by high external Ca
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