J D Barak
Affiliation: Agricultural Research Service
- Differences in attachment of Salmonella enterica serovars and Escherichia coli O157:H7 to alfalfa sproutsJ D Barak
Produce Safety and Microbiological Research, Western Regional Research Center, USDA Agricultural Research Service, Albany, California 94710, USA
Appl Environ Microbiol 68:4758-63. 2002..coli serotypes is variable, and nonpathogenic strains of E. coli to be used as surrogates for the study of pathogenic E. coli may be difficult to identify and should be selected carefully, with knowledge of the biology being examined...
- Recovery of surface bacteria from and surface sanitization of cantaloupesJeri D Barak
Produce Safety and Microbiology, US Department of Agriculture, Agricultural Research Service, Western Regional Research Center, 800 Buchanan Street, Albany, California 94710, USA
J Food Prot 66:1805-10. 2003..8%. When examined separately, scrubbing with a vegetable brush in tap water, washing with soap, and dipping in chlorine were found to reduce the bacterial load by 70, 80, and 90%, respectively...
- Salmonella enterica virulence genes are required for bacterial attachment to plant tissueJeri D Barak
USDA, ARS, WRRC, Produce Safety and Microbiology, 800 Buchanan St, Albany, CA 94710, USA
Appl Environ Microbiol 71:5685-91. 2005..These results reveal that S. enterica genes important for virulence in animal systems are also required for colonization of plants, a secondary host that can serve as a vector of S. enterica from animal to animal...
- The role of cellulose and O-antigen capsule in the colonization of plants by Salmonella entericaJeri D Barak
Produce Safety and Microbiology Research Unit, United States Department of Agriculture Agricultural Research Service, Albany, CA 94710, USA
Mol Plant Microbe Interact 20:1083-91. 2007..Outside of animal hosts, S. enterica appears to rely on an arsenal of adhesins to persist on plants, which can act as vectors and perpetuate public health concerns...
- Role of soil, crop debris, and a plant pathogen in Salmonella enterica contamination of tomato plantsJeri D Barak
Produce Safety and Microbiology Research Unit, Western Regional Research Center WRRC, Agricultural Research Service ARS, United States Department of Agriculture USDA, Albany, California, USA
PLoS ONE 3:e1657. 2008..Although unconfirmed, trace backs suggest pre-harvest contamination with Salmonella enterica. Routes of tomato crop contamination by S. enterica in the absence of direct artificial inoculation have not been investigated...
- Differential attachment to and subsequent contamination of agricultural crops by Salmonella entericaJeri D Barak
Produce Safety and Microbiology Research Unit, USDA ARS WRRC, 800 Buchanan St, Albany, California 94710, USA
Appl Environ Microbiol 74:5568-70. 2008..Once they were contaminated, phyllosphere populations were similar, except for tomato. Contamination differences exist among tomato cultivars...
- Comparison of primers for the detection of pathogenic Escherichia coli using real-time PCRJ D Barak
Produce Safety and Microbiology Research Unit, USDA Agricultural Research Service, Albany, CA 94710, USA
Lett Appl Microbiol 41:112-8. 2005..To evaluate PCR primers for the detection of pathogenic Escherichia coli in a real-time PCR assay and determine their utility in produce irrigation water testing...
- The Erwinia chrysanthemi type III secretion system is required for multicellular behaviorMee Ngan Yap
Department of Plant Pathology, 1630 Linden Dr, University of Wisconsin Madison, Madison, WI 53706, USA
J Bacteriol 187:639-48. 2005..Since the TTSS, but not the cellulose synthase subunit, is required for E. chrysanthemi pellicle formation, this inexpensive assay can be used as a high throughput screen for TTSS mutants or inhibitors...
- Genomic diversity of Erwinia carotovora subsp. carotovora and its correlation with virulenceMee Ngan Yap
Department of Plant Pathology, Russell Laboratories, University of Wisconsin Madison, Madison, Wisconsin 53706, USA
Appl Environ Microbiol 70:3013-23. 2004....