1. Department of Plant Biology, Faculty of Life Sciences, University of Copenhagen, Frederiksberg, Denmark,
2. BIOMERIT Research Centre, Department of Microbiology, BioSciences Institute, National University of Ireland, Cork, Ireland,
3. Dipartimento di Chimica Organica e Biochimica, Universita' di Napoli Federico , Complesso Universitario Monte Sant'Angelo, Napoli, Italy,
4. Dipartimento di Chimica Organica e Biochimica, Universita' di Napoli Federico , Complesso Universitario Monte Sant'Angelo, Napoli, Italy