About the Authors

Alexandra Steffens

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

Andrea Bräutigam

Affiliations Institute of Plant Biochemistry, Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, Düsseldorf, Germany, Plant Biochemistry, Heinrich Heine University, Düsseldorf, Germany

Marc Jakoby

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

Martin Hülskamp

martin.huelskamp@uni-koeln.de

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MH AS MJ. Performed the experiments: AS MJ. Analyzed the data: AS AB. Contributed reagents/materials/analysis tools: AS MJ. Wrote the paper: MH AS.