1. Department of General Microbiology; Georg-August-University Göttingen; Grisebachstr. 8 D-37077 Göttingen Germany
2. Department of Plant Biochemistry; Georg-August-University, Albrecht-von-Haller-Institute; Justus-von-Liebig Weg 11 D-37077 Göttingen Germany
3. Georg-August-University, Göttingen Center for Molecular Biosciences (GZMB); 37077 Göttingen Germany