文档介绍：18 Jun 2003 9:42 AR AR192-PY41- AR192-PY41- LaTeX2e(2002/01/18) P1: IKH
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Annu. Rev. Phytopathol. 2003. 41:271–303
doi: .
Copyright
c 2003 by Annual Reviews. All rights reserved
First published online as a Review in Advance on May 14, 2003
ECOLOGY OF MYCORRHIZAE: A Conceptual
Framework plex Interactions
Among Plants and Fungi
. Allen,1 W. Swenson,1 . Querejeta,1
. Egerton-Warburton,1,2 and . Treseder3
1Center for Conservation Biology, University of California, Riverside, California 92521;
email: ******@, ******@, ******@
2Institute for Plant Conservation, Chicago Botanic Garden, 1000 Lake Cook Rd,
Glencoe, Illinois 60022; email: lwarburton@
3Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104;
e-mail: ******@
Key Words mycorrhizae, ecology, complexity, stoichiometry, diversity
■ Abstract Mycorrhizae regulate elemental and energy flows in terrestrial ecosys-
tems. We understand much of how mycorrhizae work, but integrating all possible
mechanisms into a whole has proven elusive. Multiple evolutionary events and the
long evolutionary history mean that different plants and fungi bring independent char-
acteristics to the symbiosis. This variety results in extensive physiological variation.
How do we integrate functional responses with diversity to understand the role of myc-
orrhizae in ecosystems? We review ecophysiological mechanisms of mycorrhizae and
organize these into functional groups. Species-area relationships are not curvilinear,
but resemble the “broken stick” model. We coupled functional groups with a meta-
community analysis to show plex behavior can be generated using a simple
matrix model of resource exchange. This approach provides insights into how we might
integrate diversity and function across landscapes.
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