About the Authors

Zhongqi He

Zhongqi.He@ars.usda.gov

Affiliation USDA-ARS, Southern Regional Research Center, New Orleans, Louisiana, United States of America

Hailin Zhang

Affiliation Dept. of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma, United States of America

Dan C. Olk

Affiliation USDA-ARS, National Laboratory for Agriculture and the Environment, Ames, Iowa, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ZH. Performed the experiments: ZH HZ DO. Analyzed the data: ZH HZ DO. Wrote the paper: HZ.