1. Department of Plant Sciences University of Cambridge Cambridge CB2 3EA UK
2. Lancaster Environment Centre Lancaster University Lancaster LA1 4YQ UK
3. Institute for Plant Sciences Department of Biological Sciences University of Cologne 50674 Cologne Germany
4. Central Collection of Algal Cultures Faculty of Biology University of Duisburg‐Essen 45141Essen Germany
5. Cambridge Advanced Imaging Centre University of Cambridge Cambridge CB2 3DY UK
6. Department of Molecular Biology Princeton University Princeton NJ 08544 USA