Dr. Virendra Kumar Mishra currently working as Associate Professor at the Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi (India). He has done Ph.D. from Banaras Hindu University on water pollution in coal mines and treatment of coal miming effluent. He has expertise in analysis of water and wastewater, bioremediation and phytoremediation, environmental microbiology. After obtaining doctoral degree Dr. Mishra has worked at various levels at different National and international institution viz. Sejong University, Seoul, South Korea, IDAEA-CSIC, Barcelona Spain, IIT BHU. During the last fifteen years he has been an integral part in various research project related to wastewater treatment. Dr. Ajay Kumar is a Professor at the Amity Institute of Biotechnology in India. He has published extensively in leading International and National journals or books. He has wide area of research experience, especially in the field of Plant-Microbe Interactions, Microbial biocontrol, and Endophytes related with the medicinal plants, Postharvest management of fruits. Dr. Kumar has published more than 165 research articles including review papers/book chapters/ books in the leading international journals. He is serving as special issue editors in some journals like “Frontiers in Microbiology, Microorganism” etc. In addition also acting as reviewer in some leading journals like Frontiers group, PLOS ONE, Agriculture, Ecosystem and Environment, International Journal of Molecular Sciences, Biological Control, Plant Biochemistry and Biotechnology, 3Biotech etc. Dr, Kumar has edited several books with leading publishers including Elsevier, Springer, and Taylor and Francis.