About the Authors

Olga Pontes

Current address: Department of Biology, Washington University, St. Louis, Missouri, United States of America

Affiliations Department of Biology, Washington University, St. Louis, Missouri, United States of America, Centro de Botânica Aplicada à Agricultura, Instituto Superior de Agronomia, Technical University of Lisbon, Lisboa, Portugal

Richard J. Lawrence

Affiliation Department of Biology, Washington University, St. Louis, Missouri, United States of America

Manuela Silva

Affiliation Centro de Botânica Aplicada à Agricultura, Instituto Superior de Agronomia, Technical University of Lisbon, Lisboa, Portugal

Sasha Preuss

Affiliation Department of Biology, Washington University, St. Louis, Missouri, United States of America

Pedro Costa-Nunes

Affiliations Department of Biology, Washington University, St. Louis, Missouri, United States of America, Centro de Botânica Aplicada à Agricultura, Instituto Superior de Agronomia, Technical University of Lisbon, Lisboa, Portugal

Keith Earley

Affiliation Department of Biology, Washington University, St. Louis, Missouri, United States of America

Nuno Neves

Affiliations Centro de Botânica Aplicada à Agricultura, Instituto Superior de Agronomia, Technical University of Lisbon, Lisboa, Portugal, Secção Autónoma de Biotecnologia, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal

Wanda Viegas

To whom correspondence should be addressed. E-mail: wandaviegas@isa.utl.pt (WV); pikaard@biology.wustl.edu (CSP)

Affiliation Centro de Botânica Aplicada à Agricultura, Instituto Superior de Agronomia, Technical University of Lisbon, Lisboa, Portugal

Craig S. Pikaard

To whom correspondence should be addressed. E-mail: wandaviegas@isa.utl.pt (WV); pikaard@biology.wustl.edu (CSP)

Affiliation Department of Biology, Washington University, St. Louis, Missouri, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CP RL OP WV. Performed the experiments: RL OP SP MS PC. Analyzed the data: CP RL OP NN WV. Contributed reagents/materials/analysis tools: KE. Wrote the paper: CP.