Effects of arbuscular mycorrhizal fungi and TiO₂ nanoparticles on the photosynthetic physiology and cadmium uptake of Hemerocallis fulva under cadmium pollution

• LIU Zhenyu, 
• HAO Jianchao, 
• ZHANG Jiexi, 
• HAO Tingting, 
• CHEN Hui, 
• LIU Jianing, 
• YUAN Hongdan