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Mechanism of Calcium and Phosphate Release from Hydroxy-Apatite by Mycorrhizal Hyphae

^a Institute of Agronomy in the Tropics, Grisebachstr. 6, Goettingen 37077, Germany
^b Center for Development Research, Univ. of Bonn, Walter-Flex-Str. 3, Bonn 53113, Germany

View larger version (43K): [in a new window]   Fig. 1 Double-pot system comprising containers for soil and nutrient solution. The soil container is separated into the root compartment (K3), the root-hair compartment (K2), and the hyphae compartment (K1). Hydroxy-apatite (HA) treatments were imposed by addition of HA to K1

View larger version (16K): [in a new window]   Fig. 2 Phosphorus uptake by maize with vesicular-arbuscular mycorrhiza (VAM) after 2, 6, and 8 wk of growth on soil with and without hydroxy-apatite (HA) in Exp. 2, showing significantly increased P uptake for the HA- and VAM-treated plants than for the other treatment after 6 wk of growth. Honestly significant difference (0.05) after Tukey