1. Department of Microbiology, Technische Universität München, Emil-Ramann-Str. 4, D-85354 Freising-Weihenstephan, Germany
2. Department Biology I – Botany, Biozentrum der LMU München, Großhadernerstr. 2-4, D-82152 Planegg-Martinsried, Germany
3. Institute of Molecular Genetics, Russian Academy of Science, Kurchatov Sq. 2, 123182 Moscow, Russia