Drosophila melanogaster/drug effects; Plant Extracts/pharmacology; Rotenone/toxicity; Valerian; Animals; Catalase/genetics; Catalase/metabolism; Cytoprotection; Drosophila Proteins/genetics; Drosophila Proteins/metabolism; Drosophila melanogaster/genetics; Drosophila melanogaster/metabolism; Gene Expression Regulation, Enzymologic/drug effects; Hydrogen Peroxide/metabolism; Mitochondria/drug effects; Mitochondria/metabolism; Motor Activity/drug effects; Oxidative Stress/drug effects; Phytotherapy; Plant Extracts/isolation & purification; Plant Roots; Plants, Medicinal; RNA, Messenger/metabolism; Sulfhydryl Compounds/metabolism; Superoxide Dismutase/genetics; Superoxide Dismutase/metabolism; Time Factors; Tyrosine 3-Monooxygenase/genetics; Tyrosine 3-Monooxygenase/metabolism; Up-Regulation; Valerian/chemistry