1. 2002. Invited Speaker at the Gordon Conference in Oxford (UK) ("Mitochondria and Chloroplasts")

2. 2003. Invited Speaker at the EMBO Workshop in Les Diablerets (Switzerland) ("Molecular Genetics and Biophysical Aspects of Photosynthesis")

3. 2003. Invited Speaker at the EURESCO Conference in Spa (Belgium) ("Protein-Protein Interactions during Protein Translocation")

4. 2005. Invited Speaker at the "International Botanical Congress" in Vienna, Austria

5. 2005. Invited Speaker at the "International Symposium on Protein Sorting" in Freiburg, Germany