1. Molecular Ecology Group; Institute of Ecology; University of Innsbruk; Technikerstraße 25 6020 Innsbruck Austria
2. Department of Ecological and Biological Sciences; University of Tuscia; Via S. Camillo de Lellis 01100 Viterbo Italy
3. Department of Biology; Indiana University; 1001 East 3rd Street Bloomington IN 47405 USA
4. Department of Biology; University of Virginia; PO Box 400328 Charlottesville VA 22904-4328 USA
5. Zoological Institute; University of Basel; Vesalgasse 1 CH-4051 Basel Switzerland
6. Tohoku Ecosystem-Associated Marine Sciences; Graduate School of Agricultural Science; Tohoku University; 3-1, Konorihama, Onagawa Oshika Miyagi 986-2242 Japan
7. Plant-Microbe Interactions; Department of Biology; Faculty of Science; Utrecht University; Padualaan 8 3584 CH Utrecht The Netherlands