Book excerpt: CRISPR is a crucial technology in plant physiology and molecular biology resulting in more sustainable agricultural practices, including outcomes of better plant stress tolerance and crop improvement. CRISPR and Plant Functional Genomics explores ways to release the potential of plant functional genomics, one of the prevailing topics in plant biology and a critical technology for speed and precision crop breeding. This book presents achievements in plant functional genomics and features information on diverse applications using the emerging CRISPR-based genome editing technologies producing high-yield, disease-resistant, and climate-smart crops. It also includes theories on organizing strategies for upgrading the CRISPR system to increase efficiency, avoid off-target effects, and produce transgene-free edited crops. Features: Presents CRISPR-based technologies, releasing the potential of plant functional genomics Provides methods and applications of CRISPR/Cas-based plant genome editing technologies Summarizes achievements of speed and precision crop breeding using CRISPR-based technologies Illustrates strategies to upgrade the CRISPR system Supports the UN’s sustainable development goals to develop future climate-resilient crops CRISPR and Plant Functional Genomics provides extensive knowledge of CRISPR-based technologies and plant functional genomics, and is an ideal reference for researchers, graduate students, and practitioners in the field of plant sciences as well as agronomy and agriculture.