About the Authors

Kristina A Stinson

Affiliation Harvard Forest, Harvard University, Petersham, Massachusetts, United States of America

Stuart A Campbell

Affiliation Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada

Jeff R Powell

Affiliation Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada

Benjamin E Wolfe

Affiliation Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada

Ragan M Callaway

Affiliation Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America

Giles C Thelen

Affiliation Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America

Steven G Hallett

Affiliation Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana, United States of America

Daniel Prati

Affiliation Department of Community Ecology, UFZ Centre for Environmental Research, Halle, Germany

John N Klironomos

To whom correspondence should be addressed. E-mail: jklirono@uoguelph.ca

Affiliation Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

KAS, RMC, and JNK conceived and designed the experiments. KAS and JNK performed the experiments. KAS, SAC, JRP, BEW, RMC, GCT, SGH, DP, and JNK analyzed the data. JNK contributed reagents/materials/analysis tools. All authors wrote the paper.