Water sources and controls on water-loss rates of epigeous ectomycorrhizal fungal sporocarps during summer drought
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New Phytologist. 182: 483-494.
Access to deeper soil water and water-conserving traits should reduce water stress for ectomycorrhizal fungi, permitting function during drought. Here, we explored whether epigeous fruiting of ectomycorrhizal fungi during drought was facilitated by access to deep soil water, how much water was lost from sporocarps, and how sporocarp surface to volume ratios affected water-loss rates. We used oxygen stable isotope analysis of water combined with modeling of water sources used by ectomycorrhizal fungi; measured sporocarp water loss using a transient porometer, and related water loss to vapor pressure deficit (VPD) and sporocarp morphology.
KeywordsAmanita muscaria Boletus edulis ectomycorrhizal fungi hydraulic lift oxygen isotopes surface : volume ratio water loss water sources
Lilleskov, Erik A.; Bruns, Thomas D.; Dawson, Todd E.; Camacho, Francisco J. 2009. Water sources and controls on water-loss rates of epigeous ectomycorrhizal fungal sporocarps during summer drought. New Phytologist. 182: 483-494.