The book contains 31 articles written by distinguished scientists of the country having expertise in dealing with the microbes and exploiting their potential for the benefits of mankind. The articles included in the book are thought provocating and deals with: o the topics of Taxonomy, Diversity and Applications of VAM fungi in different Ecosystems o Applications of Microbial Technology for Treatment of effluents of a Gelatine Factory, Biodiversity of Mycotoxigenic Fungi and Trichoderma, o Useful microbes of Mangrove Ecosystem, Extremophiles, PGPRs, Phytotoxins, Litter decomposition, Biopesticides, Botanical Pesticides, biofertilizers and so many others including major concerns about the Evolution and Conservation of Microbial Biodiversity. o All the articles written by the authors are original, timely and appropriate.