Aminopeptidases/drug effects; Aminopeptidases/metabolism; Cadmium/pharmacology; Plant Roots/enzymology; Protease Inhibitors/pharmacology; Solanum lycopersicum/enzymology; Aminopeptidases/genetics; Gene Expression Regulation, Developmental; Gene Expression Regulation, Plant; Leucyl Aminopeptidase/drug effects; Leucyl Aminopeptidase/genetics; Leucyl Aminopeptidase/metabolism; Solanum lycopersicum/drug effects; Solanum lycopersicum/genetics; Solanum lycopersicum/metabolism; Plant Extracts; Plant Leaves/drug effects; Plant Leaves/enzymology; Plant Leaves/genetics; Plant Leaves/metabolism; Plant Roots/drug effects; Plant Roots/genetics; Plant Roots/metabolism; RNA, Plant/genetics; Seedlings/drug effects; Seedlings/enzymology; Seedlings/genetics; Seedlings/metabolism; Stress, Physiological; Substrate Specificity; Time Factors; Up-Regulation