This book provides a comprehensive overview of the filamentous fungus Ashbya gossypii, an emerging microbial host in industrial biotechnology. Recognized for its natural ability to overproduce riboflavin (vitamin B2), A. gossypii has evolved from a niche model organism into a promising candidate for sustainable biotechnological applications. This book synthesizes decades of foundational research and recent advances to present a complete picture of the organism's utility in modern biosciences. The book begins with a detailed history of A. gossypii (Chapter 1), tracing its discovery, early industrial uses, and the scientific milestones that led to its current role in biotechnology. Chapter 2 covers its physiology and metabolism, highlighting the unique features of its multinucleated hyphae, aerobic metabolism, and natural biosynthetic capabilities. Chapter 3 focuses on how A. gossypii's natural metabolism is being optimized for industrial applications. It covers cutting-edge metabolic engineering and synthetic biology strategies, showcasing how genetic tools have been used to redirect carbon flux, enhance product yields, and expand the range of biosynthesized compounds. Chapter 4 addresses bioprocessing innovations and biosustainable strategies, such as using renewable feedstocks, optimizing cultivation conditions, and improving strain robustness for industrial scalability. The final chapter (Chapter 5) offers forward-looking perspectives, identifying future opportunities and challenges in leveraging A. gossypii for green chemistry and biotechnological fields. As sustainability becomes a cornerstone of modern industry, this book positions A. gossypii as a key player in the next generation of microbial production platforms. Targeted at researchers, biotechnologists, and students in microbiology and metabolic engineering, this book is both a foundational reference and a roadmap for innovation in fungal biotechnology.
Lucília Domingues is Associate Professor with Habilitation at the University of Minho, Portugal, and Deputy Director of the Centre of Biological Engineering (CEB). She leads the Molecular Biotechnology and Precision Fermentation Group, focusing on microbial cell factory development, bioprocess intensification, and eco-sustainable production of biofuels and bio-based chemicals from renewable substrates. With a Ph.D. in Chemical and Biological Engineering and 20+ years of research experience, Prof. Domingues has authored numerous high-impact publications and leads projects advancing industrial biotechnology and precision fermentation.
Tatiana Aguiar is an Assistant Researcher at the CEB, University of Minho, Portugal, specializing in molecular biotechnology and metabolic engineering of microorganisms for sustainable bioproduction. She earned her Ph.D. in Bioengineering through the MIT-Portugal Program and has extensive experience in Ashbya gossypii engineering, protein-based biomaterials, and eco-innovative bio-based inks. Dr. Aguiar has published 30+ peer-reviewed papers, edited books, and secured competitive funding as Principal Investigator for projects on bioprocess innovation and bio-based materials.
Eduardo Coelho is an Invited Auxiliary Researcher at the University of Minho, Portugal, with expertise in industrial biotechnology, fermentation processes, and circular bioeconomy solutions. He holds a Ph.D. in Chemical and Biological Engineering and has 13+ years of experience bridging academic research, industrial applications, and food biotechnology. Dr. Coelho has contributed to projects on biofuels, bioproducts, and microbial biosynthesis of lactones, and is co-author of multiple scientific publications and a patent on microorganisms for sustainable oil production.
