1. Department of Biology, Faculty of Science, King Khalid University, Abha 61421, Saudi Arabia
2. Department of Botany and Microbiology, Faculty of Science, Assiut University, Assiut 71515, Egypt
3. Botany Department, Faculty of Science, Sohag University, Sohag 82524, Egypt
4. Plant Pathology Department, National Research Centre, Cairo, Egypt