About the Authors

Susan A. House

Affiliation Department of Microbiology, University of California Davis, Davis, California, United States of America

David J. Richter

Affiliation Department of Microbiology, University of California Davis, Davis, California, United States of America

Jonathan K. Pham

Affiliation Department of Microbiology, University of California Davis, Davis, California, United States of America

Scott C. Dawson

scdawson@ucdavis.edu

Affiliation Department of Microbiology, University of California Davis, Davis, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SAH SCD. Performed the experiments: SAH DR JKP. Analyzed the data: SAH DR JKP SCD. Contributed reagents/materials/analysis tools: SAH DR JKP SCD. Wrote the paper: SH SCD.