1. Department of Zoology; College of Science, King Saud University; Riyadh 11451 Saudi Arabia
2. King Abdullah Institute for Nanotechnology; King Saud University; Riyadh 11451 Saudi Arabia
3. Department of Physics and Astronomy; College of Science, King Saud University; Riyadh 11451 Saudi Arabia
4. Department of Agricultural Microbiology; Faculty of Agricultural Sciences, Aligarh Muslim University; Aligarh 202002 India