Following its predecessors, Plant Roots: The Hidden Half, Fifth Edition is thoroughly updated and reports the major changes that have taken place in root research since the last edition published over 10 years ago. Considered a widely acclaimed book in the field of plant sciences, this edition includes a broad array of topics reflecting progress being made in the subdomains of root biology, featuring chapters on modern topics, while retained chapters are fully updated to demonstrate significant developments made in our understanding of root biology and in fast-evolving research methodologies and techniques. It reviews all root-related processes, from the evolution of roots in past eras to single-cell genomics, allowing readers to grasp an overall view of the state-of-the-art research in this field.