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Induction of cold active acid phosphomonoesterase activity at low temperature in psychrotrophic ectomycorrhizal Hebeloma spp.

Published online by Cambridge University Press:  01 December 1998

M. TIBBETT ,
K. GRANTHAM ,
F. E. SANDERS  and
J. W. G. CAIRNEY
M. TIBBETT
Affiliation:
Department of Biology, University of Leeds, Leeds, LS2 9JT, U.K. Corresponding author.
K. GRANTHAM
Affiliation:
Department of Biology, University of Leeds, Leeds, LS2 9JT, U.K.
F. E. SANDERS
Affiliation:
Department of Biology, University of Leeds, Leeds, LS2 9JT, U.K.
J. W. G. CAIRNEY
Affiliation:
Department of Biological Sciences, University of Western Sydney, Nepean, PO Box 10, Kingswood, NSW 2747, Australia
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Abstract

Hebeloma strains of arctic and temperature origin, grown at 22° or 6°, were assayed for wall-bound and extracellular acid phosphomonoesterase (pNPPase) across a temperature range 2–37°. Only when grown at 6° was a cold active extracellular pNPPase induced in all the arctic strains and most of the temperature strains tested. Such enzymes are suggested to be an adaptation to low soil temperatures, and are discussed in the context of ectomycorrhizal access to soil PO4− monoesters at low temperature.

Type
Research Article
Information
Mycological Research , Volume 102 , Issue 12 , December 1998 , pp. 1533 - 1539
Copyright
© The British Mycological Society 1998

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