About the Authors

Craig Skinner

Affiliation Western Regional Research Center, United States Department of Agriculture, Agricultural Research Service, Albany, California, United States of America

Stephanie Patfield

Affiliation Western Regional Research Center, United States Department of Agriculture, Agricultural Research Service, Albany, California, United States of America

Larry Stanker

Affiliation Western Regional Research Center, United States Department of Agriculture, Agricultural Research Service, Albany, California, United States of America

Xiaohua He

xiaohua.he@ars.usda.gov

Affiliation Western Regional Research Center, United States Department of Agriculture, Agricultural Research Service, Albany, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XH CS. Performed the experiments: CS SP. Analyzed the data: XH CS SP LS. Contributed reagents/materials/analysis tools: XH LS. Wrote the manuscript: XH CS.