Affiliation: | (1) Faculty of Biology, University of Sofia, 8 D. Tzankov Bul., 1421 Sofia, Bulgaria;(2) Acad. M. Popov Instute of Plant Physiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria;(3) Institute of Molecular Biology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria |