Plant Enzyme Systems and Their Biochemical and Environmental Interactions offers a comprehensive exploration of the pivotal role plant enzymes play in sustaining life, driving metabolic pathways, and enabling plants to thrive under both favourable and adverse conditions. As climate change, soil degradation, drought, and salinity continue to challenge global agriculture, this book provides an in-depth understanding of how plant enzymes sense, adapt, and respond to environmental cues. It bridges fundamental plant biochemistry with practical environmental applications, revealing how enzymatic networks govern photosynthesis, respiration, nutrient assimilation, defense responses, and stress resilience. Drawing on the latest research, the book highlights innovative strategies that harness enzyme systems for sustainable agriculture, crop improvement, and ecological restoration. It is an essential resource for MSc and PhD scholars, researchers, plant biologists, and environmental scientists seeking to enhance plant productivity and develop solutions for global food security and environmental sustainability.   Salient features of the book include the following: -       Offers a unique blend of fundamental plant biochemistry and applied environmental science. -       Explores how plant enzymes regulate vital biochemical processes and interact with environmental factors. -       Addresses global challenges such as climate change, drought, and soil degradation, offering innovative enzyme-based strategies. -       Provides cutting-edge research and practical solutions, making it essential for researchers, biochemists, agricultural scientists, and environmentalists.