1. Department of Botany, Faculty of Science, University of Khartoum, Khartoum 0001, Sudan
2. Department of Molecular Biology and Genetics, Istanbul AREL University, Istanbul 34537, Turkey
3. Physiology and Biochemistry Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya 42130, Turkey
4. Department of Chemistry, Faculty of Pharmacy, Medical University-Sofia, 2, Dunav Street, Sofia 1000, Bulgaria