Title Effect of Biotic Elicitor (Piriformospora indica) on Antioxidant Enzymes Activity in Medicinal Plant Atropa belladonna L. under in vitro Condition Type Presentation Keywords Not Registered! Abstract Not Registered! Researchers Farshad Darvishi (Fifth Researcher), Ahmad Aghaee (Fourth Researcher), Farrokh Karimi (Third Researcher), (Second Researcher)