1. Research Group on Plant Biology under Mediterranean Conditions Universitat de les Illes Balears–INAGEA Palma Balearic Islands Spain
2. Chair of Crop Science and Plant Biology Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences Kreutzwaldi 1 51006 Tartu Estonia
3. Estonian Academy of Sciences Kohtu 6 10130 Tallinn Estonia
4. Department of Earth Sciences ETH Zürich Sonnegstrasse 5 8092 Zürich Switzerland