Influence of Ectomycorrhizal Fungi on Absorption and Balance of Essential Elements of Pinus tabulaeformis Seedlings in Saline Soil  

作　　者：WANG Jie HUANG Yi JIANG Xue-Yan 

机构地区：[1]College of Environmental Sciences and Engineering, Peking University, Beijing 100871 (China) [2]School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055 (China)

出　　处：《Pedosphere》2011年第3期400-406,共7页土壤圈（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.4002101)

摘　　要：Pinus tabulaeformis seedlings were grown under a factorial design to measure biomass accumulation and P, Na and K concentrations of plants, with 3 different ectomycorrhizal fungus (EMF) strains (Boletus edulis, Xerocomus chrysenteron and Gomphidius viscidus) and two P treatments (with or without extra P). Growth and mineral nutrition of pine seedlings were stimulated by three EMF under salinity stress. Na concentrations were changed and plant K and P concentrations were increased significantly by EMF. Adding extra P made no difference in accumulation of seedlings biomass, and did not assist element absorption of plants. Although three strains of EMF can all enhance the tolerance of pine seedlings to salinity stress, they may utilize different mechanisms because of different performance in absorption of elements. The increased P and K accumulation and the balance of ion concentrations might be due to the enhanced tolerance of EMF-inoculated plants to saline conditions.Pinus tabulaeformis seedlings were grown under a factorial design to measure biomass accumulation and P, Na and K concentrations of plants, with 3 different ectomycorrhizal fungus （EMF） strains （Boletus edulis, Xerocomus chrysenteron and Gomphidius viscidus） and two P treatments （with or without extra P）. Growth and mineral nutrition of pine seedlings were stimulated by three EMF under salinity stress. Na concentrations were changed and plant K and P concentrations were increased significantly by EMF. Adding extra P made no difference in accumulation of seedlings biomass, and did not assist element absorption of plants. Although three strains of EMF can all enhance the tolerance of pine seedlings to salinity stress, they may utilize different mechanisms because of different performance in absorption of elements. The increased P and K accumulation and the balance of ion concentrations might be due to the enhanced tolerance of EMF-inoculated plants to saline conditions.

关 键 词：AFFORESTATION ECTOMYCORRHIZAE phosphorus deficiency POTASSIUM salinity stress 

分 类 号：S718.81[农业科学—林学] S512.1