1. Division of Biochemistry, Department of Biology, Friedrich-Alexander-University Erlangen-Nuremberg , Staudtstrasse 5, 91058 Erlangen , Germany
2. School of Biological Sciences, Washington State University , Pullman, WA 99163 , USA
3. Division of Plant Physiology, Department of Biology, University of Kaiserslautern-Landau (RPTU) , Erwin-Schrödinger-Str. 22, 67663 Kaiserslautern , Germany
4. Division of Central Metabolism, Max-Planck-Institute of Molecular Plant Physiology , Am Mühlenberg 1, 14476 Potsdam , Germany