1. Department of Gene Regulation, Roumen Tsanev Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia, Bulgaria
2. Department of Ecology and Environmental Protection, Faculty of Biology, Sofia University “St. Kl. Ohridski”, Sofia, Bulgaria
3. Department of Agrochemistry, Agroecology and Farming Systems, N. Poushkarov Institute of Soil Science, Agrotechnologies and Plant Protection, Agricultural Academy, Sofia, Bulgaria