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Research Article

Polyploidy Did Not Predate the Evolution of Nodulation in All Legumes

  • Steven B. Cannon mail,

    steven.cannon@ars.usda.gov

    Affiliation: United States Department of Agriculture-Agricultural Research Service, Corn Insects and Crop Genomics Research Unit, Iowa State University, Ames, Iowa, United States of America

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  • Dan Ilut,

    Affiliation: Department of Plant Biology, Cornell University, Ithaca, New York, United States of America

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  • Andrew D. Farmer,

    Affiliation: National Center for Genome Resources, Santa Fe, New Mexico, United States of America

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  • Sonja L. Maki,

    Affiliation: Department of Biology, Carleton College, Northfield, Minnesota, United States of America

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  • Gregory D. May,

    Affiliation: National Center for Genome Resources, Santa Fe, New Mexico, United States of America

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  • Susan R. Singer,

    Affiliation: Department of Biology, Carleton College, Northfield, Minnesota, United States of America

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  • Jeff J. Doyle

    Affiliation: Department of Plant Biology, Cornell University, Ithaca, New York, United States of America

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  • Published: July 16, 2010
  • DOI: 10.1371/journal.pone.0011630

About the Authors

Steven B. Cannon
United States Department of Agriculture-Agricultural Research Service, Corn Insects and Crop Genomics Research Unit, Iowa State University, Ames, Iowa, United States of America
Dan Ilut, Jeff J. Doyle
Department of Plant Biology, Cornell University, Ithaca, New York, United States of America
Andrew D. Farmer, Gregory D. May
National Center for Genome Resources, Santa Fe, New Mexico, United States of America
Sonja L. Maki, Susan R. Singer
Department of Biology, Carleton College, Northfield, Minnesota, United States of America

Corresponding Author

Email: steven.cannon@ars.usda.gov

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SBC SS JD. Performed the experiments: SLM. Analyzed the data: SBC DI ADF. Contributed reagents/materials/analysis tools: GM SS. Wrote the paper: SBC JD.