About the Authors

Dayakar V. Badri

Affiliation Department of Horticulture and Landscape Architecture and Center for Rhizosphere Biology, Colorado State University, Fort Collins, Colorado, United States of America

Clelia De-la-Peña

Current address: Centro de Investigacion Cientifica de Yucatan, Unidad de Biotecnologia, Merida, Yucatan, Mexico

Affiliation Department of Horticulture and Landscape Architecture and Center for Rhizosphere Biology, Colorado State University, Fort Collins, Colorado, United States of America

Zhentian Lei

Affiliation The Samuel Roberts Noble Foundation, Plant Biology Division, Oklahoma, United States of America

Daniel K. Manter

Affiliation U.S. Department of Agriculture - Agricultural Research Service, Soil-Plant-Nutrient Research Unit, Fort Collins, Colorado, United States of America

Jacqueline M. Chaparro

Affiliation Department of Horticulture and Landscape Architecture and Center for Rhizosphere Biology, Colorado State University, Fort Collins, Colorado, United States of America

Rejane L. Guimarães

Affiliation Bio-Rad Laboratories, Hercules, California, United States of America

Lloyd W. Sumner

Affiliation The Samuel Roberts Noble Foundation, Plant Biology Division, Oklahoma, United States of America

Jorge M. Vivanco

j.vivanco@colostate.edu

Affiliation Department of Horticulture and Landscape Architecture and Center for Rhizosphere Biology, Colorado State University, Fort Collins, Colorado, United States of America

Competing Interests

The authors had the following competing interests: co-author Rejane L. Guimarães is employed by Bio-Rad Laboratories. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: DVB CDP JMV. Performed the experiments: DVB CDP ZL JMC LWS. Analyzed the data: DVB CDP DKM RLG JMV. Contributed reagents/materials/analysis tools: ZL DKM LWS. Wrote the paper: DVB CDP DKM JMV.