Shirley Micallef

Shirley Micallef is Professor in the Department of Plant Science & Landscape Architecture at University of Maryland's College of Agriculture and Natural Resources. Her research addresses microbiological safety of fresh produce, focusing on enteric pathogen-plant interactions, irrigation water quality, and sustainable management practices. Current projects examine Salmonella/E. coli dynamics on leafy greens under variable environmental conditions.

Research pillars: 1) Preharvest factors affecting pathogen persistence; 2) Metabolomic basis of plant-pathogen interactions; 3) Validation of sanitation technologies; 4) Irrigation water safety. Recent work (2020-2025) emphasizes molecular mechanisms of bacterial colonization and climate impacts on food safety risks.

Article trends: 75% focus on pathogen-plant interactions, 60% on leafy greens, 40% on irrigation water/sanitation. Methodological strengths include transcriptomics, metabolomics, and advanced detection platforms.