1. Institute of Evolutionary Biology and Environmental Studies, University of Zürich, Zürich, Switzerland
2. Ecosystem Management, Institute of Terrestrial Ecosystems, ETH Zürich, Zürich, Switzerland
3. Institute for Plant Biotechnology, Department of Genetics, Faculty of AgriSciences, Stellenbosch University, Stellenbosch, South Africa
4. Institute of Plant Biology, Molecular Plant Physiology Division, University of Zürich, Zürich, Switzerland
5. Department of Chemistry, University of Zürich, Zürich, Switzerland
6. Department of Plant Sciences, University of Oxford, Oxford, UK