About the Authors

Ivan Baxter

Contributed equally to this work with: Ivan Baxter, Jessica N. Brazelton

Affiliation United States Department of Agriculture–Agricultural Research Service, Plant Genetics Research Unit, Donald Danforth Plant Sciences Center, St. Louis, Missouri, United States of America

Jessica N. Brazelton

Contributed equally to this work with: Ivan Baxter, Jessica N. Brazelton

Affiliation Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana, United States of America

Danni Yu

Affiliation Department of Statistics, Purdue University, West Lafayette, Indiana, United States of America

Yu S. Huang

Affiliation Molecular and Computational Biology, University of Southern California, Los Angeles, California, United States of America

Brett Lahner

Affiliation Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana, United States of America

Elena Yakubova

Affiliation Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana, United States of America

Yan Li

Affiliation Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America

Joy Bergelson

Affiliation Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America

Justin O. Borevitz

Affiliation Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America

Magnus Nordborg

Affiliation Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna, Austria

Olga Vitek

Affiliation Department of Statistics, Purdue University, West Lafayette, Indiana, United States of America

David E. Salt

dsalt@purdue.edu

Affiliation Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Wrote the paper: DES IB JNB DY OV. Designed and supervised the project: DES. Phenotying the set of 360 accessions and data normalization: IB. Genetic complementation and gene expression studies: JNB. ICP-MS analysis: BL. Plant growth, harvesting, and sample preparation: EY. Performed selection and genotyping of the 360 accessions used for the genome-wide association mapping population: YL JOB JB. GWA analysis: MN YSH. Statistical analysis: OV DY.