Key Laboratory of Horticultural Plant Biology,Ministry of Education,College of Horticulture and Forestry,Huazhong Agricultural University,Wuhan 430070,China;
Key Laboratory of Horticultural Plant Biology,Ministry of Education,College of Horticulture and Forestry,Huazhong Agricultural University,Wuhan 430070,China;
College of Life Science and Technology,Huazhong Agricultural University,Wuhan 430070,China;
arbuscular mycorrhiza; drought tolerance; functional mechanism; Poncirus trifoliata; defense system;