Enshi is a high-incidence area for Plasmodiophora brassicae infection in Brassica rapa in China; however, the differential immunomodulatory effects of selenite (Se\(^{4+}\)) on the infection of Brassica rapa by the Plasmodiophora brassicae (Pb) remain unclear. In this study, Enshi Gaoshan Brassica rapa (GBr) was selected. Pre-treatment with 0–10 mg/L Se\(^{4+}\) was applied, followed by artificial inoculation with Plasmodiophora brassicae spores (8×10\(^9\) spore/mL). Growth characteristics, photosynthesis, and electrophysiological and nutritional metabolic features of GBr leaves were measured. The results indicate that electrophysiological techniques provide more significant distinctions... More >