Arabidopsis/metabolism; Phosphatidylinositol Phosphates/metabolism; Plant Stomata/metabolism; Vacuoles/metabolism; Abscisic Acid/pharmacology; Aminopyridines/pharmacology; Arabidopsis/cytology; Arabidopsis/genetics; Arabidopsis Proteins/antagonists & inhibitors; Arabidopsis Proteins/genetics; Arabidopsis Proteins/metabolism; Butyrates/pharmacology; Gene Expression Regulation, Plant; Green Fluorescent Proteins/genetics; Green Fluorescent Proteins/metabolism; Heterocyclic Compounds, 3-Ring/pharmacology; Hydrogen-Ion Concentration/drug effects; Inorganic Pyrophosphatase/genetics; Inorganic Pyrophosphatase/metabolism; Microscopy, Confocal; Mutation; Phosphotransferases (Alcohol Group Acceptor)/antagonists & inhibitors; Phosphotransferases (Alcohol Group Acceptor)/genetics; Phosphotransferases (Alcohol Group Acceptor)/metabolism; Plant Growth Regulators/pharmacology; Plant Stomata/drug effects; Plant Stomata/genetics; Plants, Genetically Modified; Reverse Transcriptase Polymerase Chain Reaction; Vacuolar Proton-Translocating ATPases/genetics; Vacuolar Proton-Translocating ATPases/metabolism; Vacuoles/chemistry; Vacuoles/drug effects; Vicia faba/cytology; Vicia faba/genetics; Vicia faba/metabolism