About the Authors

Sarah E. Marsh

Current address: Institute of Biology of the École Normal Supérieure, Paris, France

Affiliation Department of Bacteriology, University of Wisconsin, Madison, Wisconsin, United States of America

Michael Poulsen

Current address: Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Copenhagen East, Denmark

Affiliation Department of Bacteriology, University of Wisconsin, Madison, Wisconsin, United States of America

Adrián Pinto-Tomás

Affiliations Departamento de Bioquímica, Facultad de Medicina, Universidad de Costa Rica, San Pedro de Montes de Oca, San José, Costa Rica, Centro de Investigación en Estructuras Microscópicas, Universidad de Costa Rica, San Pedro de Montes de Oca, San José, Costa Rica

Cameron R. Currie

currie@bact.wisc.edu

Affiliations Department of Bacteriology, University of Wisconsin, Madison, Wisconsin, United States of America, U.S. Department of Energy Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, Wisconsin, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SEM MP APT CRC. Performed the experiments: SEM. Analyzed the data: SEM. Contributed reagents/materials/analysis tools: APT CRC. Wrote the paper: SEM MP APT CRC. Provided support in the field: APT.