A pot experiment was conducted to investigate the mobilization ofsparingly soluble inorganic and organic sources of phosphorus (P) byred clover (Trifolium pratense L.) whose roots were colonized by thearbuscular mycor...A pot experiment was conducted to investigate the mobilization ofsparingly soluble inorganic and organic sources of phosphorus (P) byred clover (Trifolium pratense L.) whose roots were colonized by thearbuscular mycorrhizal (AM) fungus Glomus mosseae and in associationwith the phosphate-solubilizing (PS) bacterium Bacillus megateriumACCC10010. Phosphate-solubilizing bacteria and rock phosphate had asynergistic effect on the colonization of plant roots by the AMfungus. There was a positive interaction between the PS bacterium andthe AM fungu in mobilization of rock phosphate, leading to improvedplant P nutrition. In dual inoculation with the AM fungus and the PSbacterium, the main contribution to plant P nutrition was made by theAM fungus. Application of P to be low P soil increased phosphataseactivity In the rhizosphere. Alkaline phosphatase activity wassignificantly promoted by inoculation with either the PS bacterium orthe AM fungus.展开更多
基金National Key Basic Research Support Foundation(NKBRSF)of China(No. G1999011807) the Joint Open Laboratory of Soil and Environment Between the Institute of Soil Science of the Chinese Academy of Sciences and the Hong Kong Baptist University. Presen
文摘A pot experiment was conducted to investigate the mobilization ofsparingly soluble inorganic and organic sources of phosphorus (P) byred clover (Trifolium pratense L.) whose roots were colonized by thearbuscular mycorrhizal (AM) fungus Glomus mosseae and in associationwith the phosphate-solubilizing (PS) bacterium Bacillus megateriumACCC10010. Phosphate-solubilizing bacteria and rock phosphate had asynergistic effect on the colonization of plant roots by the AMfungus. There was a positive interaction between the PS bacterium andthe AM fungu in mobilization of rock phosphate, leading to improvedplant P nutrition. In dual inoculation with the AM fungus and the PSbacterium, the main contribution to plant P nutrition was made by theAM fungus. Application of P to be low P soil increased phosphataseactivity In the rhizosphere. Alkaline phosphatase activity wassignificantly promoted by inoculation with either the PS bacterium orthe AM fungus.
