1. Department of Plant Physiology, Bayreuth Center of Ecology and Environmental Research, University of Bayreuth, 95447 Bayreuth, Germany
2. Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
3. Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
4. Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
5. University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia