About the Authors

Christiane Kiefer

Affiliation Department of Plant Developmental Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany

Marcus A. Koch


Affiliation Department of Biodiversity and Plant Systematics, Heidelberg University, Centre for Organismal Studies Heidelberg, Heidelberg, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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