About the Authors

Amal J. Johnston, Wilhelm Gruissem
Department of Biology and Zurich-Basel Plant Science Center, ETH Zurich, Zurich, Switzerland

Amal J. Johnston, Twan Rutten
Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany

Olga Kirioukhova, Philippa J. Barrell, James M. Moore, Ramamurthy Baskar, Ueli Grossniklaus
Institute of Plant Biology and Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland

Corresponding Author

wgruissem@ethz.ch

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Designed experiments, analyzed results, and wrote the manuscript: AJJ WG. Helped with experimental work and drafting of the manuscript: OK TR. Contributed confocal images: PJB. Contributed marker lines: JMM RB. Provided advice and material from his laboratory: UG. Contributed to the final version of the manuscript: AJJ OK PJB TR JMM RB UG WG.