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United States Department of Agriculture

Agricultural Research Service

Related Topics

Subbarao Ravva (Subba)
Produce Safety and Microbiology Research
Microbiology

Phone: (510) 559-6176
Fax: (510) 559-6162

USDA, ARS, PWA, WRRC-PSM
800 BUCHANAN STREET
ALBANY , CA 94710

Projects
Ecology and Detection of Human Pathogens in the Produce Production Continuum
Appropriated (D)
  Accession Number: 430338

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Persistence of F-specific RNA phages in surface waters from a produce production region along the central coast of California -
Ravva, S.V., Sarreal, C.Z. 2016. Persistence of F-specific RNA phages in surface waters from a produce production region along the central coast of California. PLoS One. PLOS One 11: e0146623.
Male-specific coliphages for source tracking fecal contamination in irrigation waters and prevalence of Shiga toxigenic Escherichia coli in a major produce production region of central coast of California -
Ravva, S.V., Sarreal, C.Z., Cooley, M.B. 2015. Male-specific coliphages for source tracking fecal contamination in irrigation waters and prevalence of Shiga toxigenic Escherichia coli in a major produce production region of central coast of California. Environmental Science: Processes & Impacts. doi: 10.1039/C4EM00537F.
Effect of Neem (Azadirachta indica) on the survival of Escherichia coli O157:H7 in dairy manure -
Ravva, S.V., Korn, A.M. 2015. Effect of Neem (Azadirachta indica) on the survival of Escherichia coli O157:H7 in dairy manure. International Journal of Environmental Research and Public Health. 12:7794-7803.
Survival of Salmonella enterica in aerated and nonaerated wastewaters from dairy lagoons -
Ravva, S.V., Sarreal, C.Z. 2014. Survival of Salmonella enterica in aerated and nonaerated wastewaters from dairy lagoons. International Journal of Environmental Research and Public Health. 11:11249-11260.
Fitness of outbreak and environmental strains of Escherichia coli O157:H7 in aerosolizable soil and association of clonal variation in stress gene regulation -
Ravva, S.V., Cooley, M.B., Sarreal, C.Z., Mandrell, R.E. 2014. Fitness of outbreak and environmental strains of Escherichia coli O157:H7 in aerosolizable soil and association of clonal variation in stress gene regulation. Pathogens. 3:528-548. DOI: 10.3390/pathogens3030528.
Strain differences in fitness of Escherichia coli O157:H7 to resist protozoan predation and survival in soil -
Ravva, S.V., Sarreal, C.Z., Mandrell, R.E. 2014. Strain differences in fitness of Escherichia coli O157:H7 to resist protozoan predation and survival in soil. PLoS One. 9(7):e102412. doi:10.1371/journal.pone.0102412.
Rapid detection of predation of Escherichia coli O157:H7 and sorting of bacterivorous tetrahymena by flow cytometry -
Ravva, S.V., Hernlem, B.J., Sarreal, C.Z. 2014. Rapid Detection of predation of Escherichia coli O157:H7 and sorting of bacterivorous tetrahymena by flow cytometry. Frontiers in Cellular and Infection Microbiology. DOI:10.3389/fcimb.2014.000057.
Intra and inter-strain differences in fitness of Escherichia coli O157:H7 to protozoan predation and survival in soil -
Altered protozoan and bacterial communities and survival of Escherichia coli O157:H7 in monensin-treated dairy wastewater from a dairy lagoon -
Ravva, S.V., Sarreal, C.Z., Mandrell, R.E. 2013. Protozoan and bacterial community shifts during enhanced survival of Escherichia coli O157:H7 in monensin-treated dairy wastewater. PLoS One. 8(1):e54782.doi:10.1371/journal.pone.0054782.
Bacterial communities in urban aerosols collected with wetted-wall cyclonic samplers and seasonal fluctuations of live and culturable airborne bacteria -
Ravva, S.V., Hernlem, B.J., Sarreal, C.Z., Mandrell, R.E. 2012. Bacterial communities in urban aerosols collected with wetted-wall cyclonic samplers and seasonal fluctuations of live and culturable airborne bacteria. Journal of Environmental Monitoring. 14(2):473-481. doi: 10.1039/clem10573d.
Bacterial communities in aerosols and manure samples from two different dairies in central and Sonoma valleys of California Reprint Icon -
Ravva, S.V., Sarreal, C.Z., Mandrell, R.E. 2011. Bacterial communities in aerosols and manure samples from two different dairies in central and Sonoma valleys of California. PLoS One. 6(2):e17281.
Identification of protozoa in dairy lagon Wwsterwater that consume Escherichia coli O157:H7 preferentially -
Ravva, S.V., Sarreal, C.Z., Mandrell, R.E. 2010. Identification of protozoa in dairy lagon Wwsterwater that consume Escherichia coli O157:H7 preferentially. PLoS One. 5:12 e15671.
Native protozoa decrease Escherichia coli O157:H7 in microcosms of wastewater from a dairy lagoon -
Application of flow cytometry and cell sorting to the bacterial analysis of environmental aerosol samples -
Hernlem, B.J., Ravva, S.V. 2007. Application of flow cytometry and cell sorting to the bacterial analysis of environmental aerosol samples. Journal of Environmental Monitoring. 2007(9) 1317-1322.
Extractable Organic Components and Nutrients in Wastewater from Dairy Lagoons Influence the Growth and Survival of Escherichia coli 0157:H7 -
Ravva, S.V., Korn, A.M. 2007. Extractable Organic Components and Nutrients in Wastewater Influence the Growth of Escherichia coli 0157:H7 in Dairy Lagoons. Applied and Environmental Microbiology. 73(7):2191-2198.
NUTRIENTS AND WASTEWATER COMPONENTS INFLUENCE THE SURVIVAL AND GROWTH OF PATHOGENIC ESCHERICHIA COLI O157:H7 IN DAIRY LAGOONS -
Ravva, S.V. 2006. Nutrients and wastewater components influence the survival and growth of pathogenic escherichia coli o157:h7 in dairy lagoons [Abstract]. 2nd Federation of European Microbioilogy Societies (FEMS) Congress of European Microbiologists. Poster #P.ENV.109.
SURVIVAL OF ESCHERICHIA COLI O157:H7 AND SALMONELLA ENTERICA IN MANURE WASTE WATER FROM DAIRY LAGOONS -
Ravva, S.V., Sarreal, C.Z., Duffy, B., Stanker, L.H. 2006. Survival of escherichia coli o157:h7 and salmonella enterica in manure waste water from dairy lagoons. Journal of Applied Microbiology. 101(2006):891-902
REAL-TIME QUANTITATIVE PCR DETECTION OF MYCOBACTERIUM AVIUM SUBSP. PARATUBERCULOSIS AND DIFFERENTIATION FROM OTHER MYCOBACTERIA USING SYBR GREEN AND TAQMAN ASSAYS -
Ravva, S.V., Stanker, L.H. 2005. Real-time quantitative pcr detection of mycobacterium avium subsp. paratuberculosis and differentiation from other mycobacteria using sybr green and taqman assays. Journal of Microbiological Methods. 63(2005) 305-317.
SYBR GREEN AND TAQMAN ASSAYS FOR SENSITIVE DETECTION AND DIFFERENTIATION OF MYCOBACTERIUM AVIUM SUBSP. PARATUBERCULOSIS FROM OTHER MYCOBACTERIA -
IDENTIFICATION OF BACTERIAL POPULATIONS IN AGRICULTURAL WASTE WATER USING 16S RDNA SEQUENCES AND OTHER GENETIC MARKERS. -
Mcgarvey, J.A., Stanker, L.H., Ravva, S.V., Miller, W.G., Sanchez, S. 2004. Identification of bacterial populations in agricultural waste water using 16s rdna sequences and other genetic markers [Abstract]. American Society for Microbiology Meeting. Poster Q030.
BACTERIAL ANALYSIS OF DAIRY WASTEWATER, A MOLECULAR APPROACH -
McGarvey, J.A., Ravva, S.V., Stanker, L.H., Miller, W.G., Sanchez, S. Bacterial analysis of dairy wastewater, a molecular approach. Meeting Abstract.
EFFECT OF MOLASSES ON REGROWTH OF E. COLI O157:H7 AND SALMONELLA IN COMPOST TEAS -
Duffy,B., Sarreal, C., Ravva, S., Stanker, L. 2004. Effect of molasses on regrowth of E. coli O157:H7 and Salmonella in compost teas. Compost Science & Utilization. 12(1):93-96.
GENOMIC ANALYSIS OF MACROPHAGES INFECTED WITH M. TUBERCULOSIS, M. AVIUM AND M. SMEGMATIS. -
Mcgarvey, J.A., Stanker, L.H., Ravva, S.V., Bermudez, L. 2003. Genomic analysis of macrophages infected with m. tuberculosis, m. avium and m. smegmatis [Abstract]. Poster 5613.
SURVIVAL OF E. COLI 0157:H7 IN AERATED DAIRY MANURE LAGOONS. -
Stanker, L.H. and Ravva, S.V., 2002. Survival of E. coli 0157:H7 in aerated dairy manure lagoons. In Cherry, J.P. and Pavlath, A.E. (eds.) Proceedings of the 31st United States-Japan Cooperative Program in Natural Resources (UJNR) Protein Resources Panel, p. M1-6, December 1-6, 2002, Monterey, CA.
REGROWTH OF PATHOGENIC BACTERIA IN COMPOST TEAS AND RISK OF TRANSMISSION TO STRAWBERRY PLANTS. -
Duffy, B., Sarreal, C., Stevenson, R., Ravva, S. and Stanker, L., 2002. Regrowth of pathogenic bacteria in compost teas and risk of transmission to strawberry plants. p. 1142-1149. In F.C. Michel, Jr., R.F. Rynk and H.A.J. Hoitink (ed.), Proceedings of 2002 International Symposium: Composting and Compost Utilization, The JG Press, Inc., Emmaus, PA. (CD-ROM from JG Press).
BACTERIAL DETECTION USING SENSITIVE IMMUNOCHEMICAL METHODS -
Stanker, L.H., Sheffield, C., Beier, R.C. Andreotti, P., Venkateswaran, K., McBride, M.T., Ravva, S.V., Duffy, B.K., Mandrell, R.E. 2001. Bacterial Detection Using Sensitive Immunological Methods. In Proceedings of the 30th United States-Japan Cooperative Program in Natural Resources (UJNR) Protein Resources Panel, October 15-19, 2001, Tsukuba, Ibaraki, Japan. p. 33-40.
FOODBORNE PATHOGENS IN DAIRY ENVIRONMENTS -
Ravva, S.B., Duffy, B.K., Stanker, L.H., Mandrell, R.E. 2001. Foodborne Pathogens in Dairy Environments. Proceedings of the 30th United States-Japan Cooperative Program in Natural Resources (UJNR) Protein Resources Panel, October 15-19, 2001, Tsukuba, Ibaraki, Japan. p. 64-71.
Last Modified: 5/2/2016
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