Beneficial Microbes for Sustainable Agriculture under Abiotic Stress: Functional Traits and Regulation highlights the potential for microbe-mediated stress phytotolerance to be improved by presenting multiple scenarios of application and results. In most research and studies, abiotic stress is applied singularly to specific plants inoculated with a bioinoculum or a microbial consortium to isolate specific plant-microbe responses. However, in reality, plants are continually exposed to a multitude of different stresses simultaneously occurring. This book presents microbial functional traits and microbe-mediated plant responses under both specific or combined stress conditions. Collectively, it provides insights into microbial functional traits and microbe-mediated plant responses in a wide range of conditions, providing foundational understanding of their potential benefits, and inspiring further research. The book also centers on specific microbial strains and groups which have been shown to effectively promote stress tolerance, and which could be utilized to boost agricultural production under stress conditions. Their potential utilization in stress affected lands not just improves crop production but could also be in line with sustainable agriculture. With the advancement of tools such as omics related technologies, emerging information on microbial functional traits and regulations on microbe-mediated phytotolerance will also allow us to develop relevant biotechnologies harnessing potentials of plant-microbe interactions under stress conditions. The information in this volume will be of interest to those working toward these next steps.