About the Authors

Kerstin Hoef-Emden

kerstin.hoef-emden@uni-koeln.de

Affiliation Botanical Institute, Cologne Biocenter, University of Cologne, Cologne, Germany

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KHE. Performed the experiments: KHE. Analyzed the data: KHE. Contributed reagents/materials/analysis tools: KHE. Wrote the paper: KHE.