1. Department of Microbiology, Kohat University of Sciences and Technology, Kohat, Pakistan;
2. Department of Life Sciences, School of Science, University of Management and Technology, Lahore, Pakistan; and
3. Plant Virus Division, Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, 38104 Braunschweig, Germany