Gale Bozzo

Gale Bozzo is an Associate Professor in the Department of Plant Agriculture at the University of Guelph, where she leads a research program focused on postharvest biochemistry and plant secondary metabolism. Her work addresses critical challenges in fruit quality preservation and metabolic pathways affecting agricultural commodities, particularly apples, pears, and dry beans.

Education:

• B.Sc. from York University
• M.Sc. from York University
• Ph.D. from Queen’s University

Dr. Bozzo's research spans three interconnected domains. Her postharvest physiology work investigates controlled atmosphere (CA) storage mechanisms, examining how oxidative stress and redox imbalances trigger disorders like senescent scald in pears and internal breakdown in apples. In secondary metabolism, she dissects the phenylpropanoid pathway to understand flavonoid catabolism in Arabidopsis and seed coat darkening in cranberry beans. Her laboratory employs biochemical assays, functional genomics, and metabolite profiling to identify key enzymatic steps and develop cultivar-specific storage protocols for Ontario-grown fruits. Current projects include developing strategies to prevent glutathione depletion in stored pears and characterizing polyphenol oxidase variants responsible for bean seed coat browning.

Analysis of her 2014-2017 publications reveals a consistent emphasis on stress-induced metabolic shifts during postharvest handling. Her team has established critical links between GABA accumulation and CA injury in apples, glutathione dynamics and pear disorders, and transcriptional regulation of proanthocyanidin metabolism in beans. These studies demonstrate interdisciplinary approaches combining plant physiology, molecular biology, and food science to solve practical agricultural problems.

Dr. Bozzo actively mentors students through undergraduate research opportunities and graduate programs (M.Sc. and Ph.D.), with her laboratory located in Room 4230 of the Edmund C. Bovey Building. She maintains strong collaborations with Ontario Ministry of Agriculture researchers like J.R. DeEll on fruit storage projects and with plant biochemists including B.J. Shelp on metabolic pathway analyses.

The Bozzo lab operates at the intersection of fundamental plant science and applied postharvest technology, with ongoing work focused on extending marketability of Ontario fruits through redox metabolite management and developing bean varieties resistant to postharvest darkening through targeted breeding informed by RNAseq data.