1 Department of Environmental Sciences, University of Basel, Schönbeinstrasse 6, 4056, Basel, Switzerland. larsdietrich.plantphys@gmail.com.
2 Agroecology and Organic Farming Group, Institute of Crop Science and Resource Conservation, University of Bonn, Auf dem Hügel 6, 53121, Bonn, Germany. larsdietrich.plantphys@gmail.com.
3 Department of Environmental Sciences, University of Basel, Schönbeinstrasse 6, 4056, Basel, Switzerland.