Influences of Arbuscular Mycorrhizal Fungi and Dark Septate Endophytes on the Growth, Nutrition, Photosynthesis, and Antioxidant Physiology of Maize

摘要

A pot experiment was conducted to study the influences of single and dual inoculations with arbuscular mycorrhizal fungi (AMF) and dark septate endophytes (DSE) on maize performance. Results showed the single and dual inoculations with AMF and DSE significantly increased maize biomass and contents of nitrogen (N), phosphorus (P), potassium and glutathione; improved activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT), and reduced malondialdehyde (MDA) contents. Moreover, single DSE inoculation and dual inoculation with AMF and DSE improved leaf photosynthesis. Shoot biomass was significantly positively correlated with N content and SOD and CAT activity; root biomass was significantly positively correlated with P content and CAT and POD activity, while negatively correlated with MDA content. Thus the promotion of maize growth by AMF and DSE is closely related to their beneficial effects on mineral nutrition and antioxidant physiology. AMF and DSE exert a synergistic effect on the growth, P nutrition, and antioxidant physiology of maize.