1. Centre for Biological Sciences; University of Southampton; Southampton SO17 1BJ UK
2. Faculty of Science and Technology; Free University of Bolzano/Bozen; Piazza Università 1 39100 Bolzano Italy
3. MountFor Project Centre; European Forest Institute; Via E. Mach 1 38010 San Michele a/Adige Trento Italy
4. FoxLab; Forest & Wood Science; Fondazione E.Mach; Via E.Mach 1 38010 San Michele a/Adige Trento Italy
5. Ecosys; UMR INRA-AgroParisTECH; Bâtiment EGER Aile B 78820 Thiverval-Grignon France
6. School of Biotechnology and Biomolecular Sciences; University of New South Wales; Kensington Sydney NSW 2052 Australia
7. IEES; UMR 7618; CNRS-UPMC-UPEC-INRA-IRD; Bâtiment EGER Aile B 78820 Thiverval-Grignon France
8. Agricultural Research Council (CRA); Research Centre for the Soil-Plant System; via Treste 23 34170 Gorizia Italy
9. Department of Agricultural and Environmental Sciences; University of Udine; Via delle Scienze 206 33100 Udine Italy