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Mycorrhizal associations in Hong Kong Fagaceae

IV. The mobilization of organic and poorly soluble phosphates by the ectomycorrhizal fungus Pisolithus tinctorius

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Abstract

Pisolithus tinctorius (Pers.) Coker and Couch is capable of mobilizing non-mobile phosphates. Organic phosphates are broken down enzymatically by the fungal surface acid phosphatases whereas poorly soluble phosphates are solubilized by the ability of the fungus to excrete protons and organic acids. The accumulation of phosphate in the form of insoluble polyphosphate stored in the vacuoles is positively correlated with the external available phosphate pool. The major cation linked to the stored phosphate polymers in this fungus is calcium.

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Authors and Affiliations

  1. Department of Botany, University of Hong Kong, Pokfulam Road, Hong Kong

    Paul C. F. Tam & D. A. Griffiths

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  1. Paul C. F. Tam
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  2. D. A. Griffiths
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Tam, P.C.F., Griffiths, D.A. Mycorrhizal associations in Hong Kong Fagaceae. Mycorrhiza 2, 133–139 (1993). https://doi.org/10.1007/BF00203859

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