Absorbing structure 2 Am fungus 2 Amplitude modulation 2 Arbuscular 2 Arbuscular mycorrhizal fungi 2 Arbuscular mycorrhizal symbiosis 2 Bacteria (microorganisms) 2 Cell culture 2 Characteristic development 2 Cortical cells 2 Fungi 2 Glomus intraradices 2 Glycine max 2 In-plants 2 In-vitro 2 Intensity values 2 Monoxenic culture 2 Nitrogen fixation 2 Nucleic acids 2 Plant hosts 2 Plants (botany) 2 Soybean roots 2 Transformed soybean roots 2 Whole plants 2