A5008619183- Listeria monocytogenes in Food Safety
- Fecal contamination and water quality
- Salmonella and Campylobacter epidemiology
- Plant-Microbe Interactions and Immunity
- Food Safety and Hygiene
- Wastewater Treatment and Reuse
- Plant Pathogenic Bacteria Studies
- Essential Oils and Antimicrobial Activity
- Pharmaceutical and Antibiotic Environmental Impacts
- Vibrio bacteria research studies
- Antimicrobial Resistance in Staphylococcus
- Organic Food and Agriculture
- Microbial Inactivation Methods
- Water Treatment and Disinfection
- Antibiotic Resistance in Bacteria
- Urban Agriculture and Sustainability
- Plant Pathogens and Fungal Diseases
- Viral gastroenteritis research and epidemiology
- Bacterial Identification and Susceptibility Testing
- Legume Nitrogen Fixing Symbiosis
- Bacteriophages and microbial interactions
- Microbial Community Ecology and Physiology
- Seed and Plant Biochemistry
- Allelopathy and phytotoxic interactions
- Bacterial biofilms and quorum sensing
University of Maryland, College Park
2016-2025
Center for Food Safety and Applied Nutrition
2014-2024
University of Maryland, Baltimore
2019
University of Massachusetts Boston
2009
Plant species is considered to be one of the most important factors in shaping rhizobacterial communities, but specific plant–microbe interactions rhizosphere are still not fully understood. Arabidopsis thaliana, for which a large number naturally occurring ecotype accessions exist, lacks mycorrhizal associations and hence an ideal model studies. Eight were found exert marked selective influence on bacteria associated with their roots, as determined by terminal-restriction fragment length...
The rhizosphere is strongly influenced by plant-derived phytochemicals exuded roots and plant species exert a major selective force for bacteria colonizing the root-soil interface. We have previously shown that rhizobacterial recruitment tightly regulated genetics, showing natural variants of Arabidopsis thaliana support genotype-specific communities while also releasing unique blend exudates at six weeks post-germination. To further understand how exudate release controlled plants, changes...
The incidence of community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infections is increasing in the United States, and it possible that municipal wastewater could be a reservoir this microorganism. To date, no U.S. studies have evaluated occurrence MRSA wastewater.We examined methicillin-susceptible S. (MSSA) at treatment plants.We collected samples from two Mid-Atlantic Midwest plants between October 2009 2010. Samples were analyzed for MSSA using membrane filtration....
Abstract We evaluated the antimicrobial performance of sodium hypochlorite (NaOCl) and peracetic acid (PAA) during washing baby spinach in water varying levels organic load, as measured by its chemical oxygen demand (COD). Escherichia coli TVS353 was spot inoculated onto one unwashed leaf. Sanitizers were added into with preadjusted COD (300 or 2500 ppm) to achieve concentrations from 20 80 ppm. One leaf washed nine uninoculated leaves 500 mL ( n = 6). Bacterial load on lowered sanitizers a...
Small- and medium-size farms in the mid-Atlantic region of United States use varied agricultural practices to produce leafy greens during spring fall, but impact preharvest on food safety risk remains unclear. To assess farm-level factors, bacterial indicators, Salmonella enterica, Shiga toxin-producing Escherichia coli (STEC) from 32 organic conventional were analyzed. A total 577 greens, irrigation water, compost, field soil, pond sediment samples collected. was recovered 2.2% (n = 369)...
Irrigation water contaminated with Salmonella enterica and Listeria monocytogenes may provide a route of contamination raw or minimally processed fruits vegetables. While previous work has surveyed specific singular types agricultural irrigation for bacterial pathogens, few studies have simultaneously different sources repeatedly over an extended period time. This study quantified S. L. levels (MPN/L) at 6 sites, including river waters: tidal freshwater (MA04, n = 34), non-tidal river,...
Foodborne illness-causing enteric bacteria are able to colonize plant surfaces without causing infection. We lack an understanding of how epiphytic persistence occurs on plants, possibly as adaptive transit strategy maximize chances reentering herbivorous hosts. used tomato (Solanum lycopersicum) cultivars that have exhibited differential susceptibilities Salmonella enterica colonization investigate the influence surface compounds and exudates bacterial populations. Tomato fruit, shoot, root...
Abstract Understanding weather-related drivers of crop plant-microbiome relationships is important for food security and safety in the face a changing climate. Cucumber tomato are commercially commodities that susceptible to plant disease have been implicated foodborne outbreaks. To investigate influence precipitation on plant-associated microbiomes, epiphytically associated bacterial communities cucumber samples were profiled by 16 S rRNA gene sequencing (V1-V3) days surrounding two rain...