About the Authors

Jean-François Pombert

jpombert@interchange.ubc.ca

Affiliation Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada

Patrick J. Keeling

Affiliation Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PJK. Performed the experiments: JFP. Analyzed the data: JFP. Wrote the paper: JFP. Contributed insight into data interpretation: PJK. Helped draft the manuscript: PJK.