About the Authors

Nils Arrigo

Affiliation Laboratory of Evolutionary Botany, University of Neuchâtel, Neuchâtel, Switzerland

Claire Arnold

To whom correspondence should be addressed. E-mail: claire.arnold@unine.ch

Affiliation National Centre of Competence in Research (NCCR) Plant Survival, University of Neuchâtel, Neuchâtel, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CA. Performed the experiments: NA. Analyzed the data: CA NA. Wrote the paper: NA.