Dr. Ajay Kumar is currently working as an assistant professor at Amity Institute of Biotechnology, Amity University, Noida, India. Dr. Kumar recently completed his tenure as a visiting scientist from Agriculture Research Organization, Volcani Center, Israel. He has published more than 200 research, review articles, and book chapters in international and national journals. He serves as an associate editor for Frontiers in Microbiology, BMC Microbiology and as guest editor for various journals such as Plants, Microorganisms, and Sustainability. Dr. Kumar has also edited more than 40 books with the leading publishers such as Elsevier, Springer, and Wiley. Dr. Kumar’s research experience is in the field of plant–microbe interactions, postharvest management, cyanobacterial biology, and so on