1. Department of Plant Physiology, Warsaw University of Life Sciences - Szkoła Główna Gospodarstwa Wiejskiego, Warsaw 02-776, Poland
2. Department of Chemistry, Umeå University, 90736 Umeå, Sweden
3. Laboratory of Plant Physiology and Photobiology, Department of Life and Environmental Sciences, Università degli Studi di Cagliari, 09123 Cagliari, Italy