North Central College 1 article published in JoVE Environment Investigation of Plant Interactions Across Common Mycorrhizal Networks Using Rotated Cores Joanna Weremijewicz1,2, David P. Janos2 1Department of Biology, North Central College, 2Department of Biology, University of Miami Most plants within communities likely are interconnected by arbuscular mycorrhizal (AM) fungi, but mediation of plant interactions by them has been investigated primarily by growing plants with versus without mycorrhizas. We present a method to manipulate common mycorrhizal networks among mycorrhizal plants to investigate their consequences for plant interactions.