The book "Microbial Root Endophytes" offers a comprehensive examination of the interactions between plant roots and non-mycorrhizal microbial endophytes. It highlights the diversity of these microbes and their life strategies, as well as the conditions that can influence the nature of these interactions. The authors, Barbara J.E. Schulz, Christine J.C. Boyle, and Thomas N. Sieber, present detailed analyses of the methods for isolating and cultivating these endophytes, as well as conventional and molecular identification techniques. This work is a valuable resource for researchers and practitioners in agriculture and forestry who seek a deeper understanding of the mechanisms of plant-microbe interactions. The extensive overviews and analyses encourage further studies to better understand the complex relationships between plants and microbes.