1. Institut für Zelluläre und Molekulare Botanik, Abt. Molekulare Evolution, University of Bonn, 53115 Bonn, Germany
2. Molekulare Botanik, Universität Ulm, 89069 Ulm, Germany
3. Department of Plant Proteomics, Institute of Plant Genetics, Leibniz Universität Hannover, 30419 Hannover, Germany
4. Department of Botany, Graduate School of Science, Kyoto University, Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan