Respiratory Responses To Temperature By Ectomycorrhizal Fungi

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• Dr. Glenna M. Malcolm, Pennsylvania State University
• Thursday 13 March 2008, 13:00-14:00
• Part II Lecture Theatre, Department of Zoology.

If you have a question about this talk, please contact Holly Barclay.

Ectomycorrhizal (ECM) fungi contribute significantly to ecosystem respiration, but unlike for their host plants, little research has addressed the effect of temperature on ECM fungal respiration. Rapid temperature changes can be expected in forests on a weekly and seasonal basis and can be anticipated in the coming years on account of global warming.

We examined acclimation to temperature of respiration by ECM fungi and found that substantial variation exists among ECM fungal isolates in their ability to acclimate to temperature. As soil temperatures increase, ECM fungi that acclimate may require less carbon from their host plants than fungi that do not acclimate. The ability of some ECM fungi to acclimate may partially ameliorate the anticipated positive feedback between soil respiration and temperature.

This talk is part of the Ecology Lunchtime Series series.

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