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Published on: March 26, 2019
Host specificity in ectomycorrhizal communities: what do the exceptions tell us?
Thomas D Bruns1, Martin I Bidartondo, D Lee Taylor
1Department of Plant and Microbial Biology, 111 Koshland Hall, University of California, Berkeley, California 94720-3102.
Integrative and Comparative Biology
|June 29, 2011
Summary
Plant-fungi symbioses show high host specificity in rare cases. This specificity, seen in epiparasitic plants and suilloid fungi, is initiated by chemical cues and may offer ecological advantages.
Area of Science:
- Ecology
- Mycology
- Plant Biology
Background:
- Ectomycorrhizal symbioses involve nutrient exchange between plants and fungi.
- Host specificity varies among ectomycorrhizal fungi.
- Exceptional cases of specificity offer insights into ecological interactions.
Purpose of the Study:
- Examine two cases of high host specificity in ectomycorrhizal associations.
- Investigate the initiation mechanisms and ecological advantages of specificity.
- Understand the role of specificity in complex ecosystems.
Main Methods:
- Focused on non-photosynthetic epiparasitic plants and suilloid fungi.
- Analyzed the role of chemical cues in symbiosis initiation.
- Considered potential benefits and ecological implications of host specificity.
Main Results:
- New symbioses are initiated by host-stimulated germination of dormant fungal propagules.
- Specificity reduces wasted propagule investment on non-host plants.
- The precise advantages of specificity require further investigation.
Conclusions:
- Host specificity in ectomycorrhizal fungi can be initiated by host-derived chemical signals.
- Specialized physiological adaptations may confer benefits to specific partners.
- Specificity might play a role in plant competition and ecosystem dynamics.
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