Renato H Orsi

Summary

Affiliation: Cornell University
Country: USA

Publications

  1. pmc Short-term genome evolution of Listeria monocytogenes in a non-controlled environment
    Renato H Orsi
    Department of Food Science, Cornell University, Ithaca, NY, USA
    BMC Genomics 9:539. 2008
  2. ncbi request reprint Genetic variability and pathogenicity potential of Escherichia coli isolated from recreational water reservoirs
    Renato H Orsi
    Centro de Biologia Molecular e Engenharia Genetica, CP 6010, Universidade Estadual de Campinas, 13083 875 Campinas, SP, Brazil
    Res Microbiol 158:420-7. 2007
  3. pmc Homopolymeric tracts represent a general regulatory mechanism in prokaryotes
    Renato H Orsi
    Department of Food Science, Cornell University, Ithaca, NY 14853, USA
    BMC Genomics 11:102. 2010
  4. pmc Genome-wide analyses reveal lineage specific contributions of positive selection and recombination to the evolution of Listeria monocytogenes
    Renato H Orsi
    Department of Food Science, Cornell University, Ithaca, NY, USA
    BMC Evol Biol 8:233. 2008
  5. pmc Transcriptomic and phenotypic analyses suggest a network between the transcriptional regulators HrcA and sigmaB in Listeria monocytogenes
    Yuewei Hu
    Department of Food Science, 413 Stocking Hall, Cornell University, Ithaca, NY 14853, USA
    Appl Environ Microbiol 73:7981-91. 2007
  6. pmc Comparative genomics of the bacterial genus Listeria: Genome evolution is characterized by limited gene acquisition and limited gene loss
    Henk C den Bakker
    Department of Food Science, Cornell University, Ithaca, NY 14853, USA
    BMC Genomics 11:688. 2010
  7. pmc Complementation of Listeria monocytogenes null mutants with selected Listeria seeligeri virulence genes suggests functional adaptation of Hly and PrfA and considerable diversification of prfA regulation in L. seeligeri
    Courtney R Lucas Stelling
    Graduate Field of Microbiology, Department of Food Science, Cornell University, Ithaca, New York 14853, USA
    Appl Environ Microbiol 76:5124-39. 2010
  8. pmc Genome wide evolutionary analyses reveal serotype specific patterns of positive selection in selected Salmonella serotypes
    Yesim Soyer
    Department of Food Science, Cornell University, 412 Stocking Hall, Ithaca, NY 14853, USA
    BMC Evol Biol 9:264. 2009
  9. pmc Deep RNA sequencing of L. monocytogenes reveals overlapping and extensive stationary phase and sigma B-dependent transcriptomes, including multiple highly transcribed noncoding RNAs
    Haley F Oliver
    Department of Food Science, Cornell University, Ithaca, NY, USA
    BMC Genomics 10:641. 2009
  10. pmc Lineage specific recombination and positive selection in coding and intragenic regions contributed to evolution of the main Listeria monocytogenes virulence gene cluster
    Renato H Orsi
    Department of Food Science, Cornell University, 412B Stocking Hall, Ithaca, NY 14853, USA
    Infect Genet Evol 8:566-76. 2008

Collaborators

Detail Information

Publications21

  1. pmc Short-term genome evolution of Listeria monocytogenes in a non-controlled environment
    Renato H Orsi
    Department of Food Science, Cornell University, Ithaca, NY, USA
    BMC Genomics 9:539. 2008
    ..While a genome sequence for the 1988 food isolate has been reported, we sequenced the genomes of the 1988 human isolate as well as a human and a food isolate from the 2000 outbreak to allow for comparative genome analyses...
  2. ncbi request reprint Genetic variability and pathogenicity potential of Escherichia coli isolated from recreational water reservoirs
    Renato H Orsi
    Centro de Biologia Molecular e Engenharia Genetica, CP 6010, Universidade Estadual de Campinas, 13083 875 Campinas, SP, Brazil
    Res Microbiol 158:420-7. 2007
    ..Colony blot experiments using probes from several virulence factor genes showed that both reservoirs contained potential pathogenic strains and may represent a risk to recreational or household usage of these water resources...
  3. pmc Homopolymeric tracts represent a general regulatory mechanism in prokaryotes
    Renato H Orsi
    Department of Food Science, Cornell University, Ithaca, NY 14853, USA
    BMC Genomics 11:102. 2010
    ..g., phase variation...
  4. pmc Genome-wide analyses reveal lineage specific contributions of positive selection and recombination to the evolution of Listeria monocytogenes
    Renato H Orsi
    Department of Food Science, Cornell University, Ithaca, NY, USA
    BMC Evol Biol 8:233. 2008
    ..innocua strain and four L. monocytogenes strains representing lineages I and II, to characterize the contributions of positive selection and recombination to the evolution of the L. innocua/L. monocytogenes core genome...
  5. pmc Transcriptomic and phenotypic analyses suggest a network between the transcriptional regulators HrcA and sigmaB in Listeria monocytogenes
    Yuewei Hu
    Department of Food Science, 413 Stocking Hall, Cornell University, Ithaca, NY 14853, USA
    Appl Environ Microbiol 73:7981-91. 2007
    ..monocytogenes genes...
  6. pmc Comparative genomics of the bacterial genus Listeria: Genome evolution is characterized by limited gene acquisition and limited gene loss
    Henk C den Bakker
    Department of Food Science, Cornell University, Ithaca, NY 14853, USA
    BMC Genomics 11:688. 2010
    ....
  7. pmc Complementation of Listeria monocytogenes null mutants with selected Listeria seeligeri virulence genes suggests functional adaptation of Hly and PrfA and considerable diversification of prfA regulation in L. seeligeri
    Courtney R Lucas Stelling
    Graduate Field of Microbiology, Department of Food Science, Cornell University, Ithaca, New York 14853, USA
    Appl Environ Microbiol 76:5124-39. 2010
    ..seeligeri and L. monocytogenes. Virulence gene homologues and their expression thus appear to have adapted to distinct but possibly related functions in these two species...
  8. pmc Genome wide evolutionary analyses reveal serotype specific patterns of positive selection in selected Salmonella serotypes
    Yesim Soyer
    Department of Food Science, Cornell University, 412 Stocking Hall, Ithaca, NY 14853, USA
    BMC Evol Biol 9:264. 2009
    ....
  9. pmc Deep RNA sequencing of L. monocytogenes reveals overlapping and extensive stationary phase and sigma B-dependent transcriptomes, including multiple highly transcribed noncoding RNAs
    Haley F Oliver
    Department of Food Science, Cornell University, Ithaca, NY, USA
    BMC Genomics 10:641. 2009
    ....
  10. pmc Lineage specific recombination and positive selection in coding and intragenic regions contributed to evolution of the main Listeria monocytogenes virulence gene cluster
    Renato H Orsi
    Department of Food Science, Cornell University, 412B Stocking Hall, Ithaca, NY 14853, USA
    Infect Genet Evol 8:566-76. 2008
    ..monocytogenes virulence gene cluster thus have evolved independently, despite their close physical linkage, likely reflecting distinct selective pressures associated with expression and function of the proteins encoded in this region...
  11. pmc Protein level identification of the Listeria monocytogenes sigma H, sigma L, and sigma C regulons
    Sana Mujahid
    Department of Food Science, Cornell University, 412 Stocking Hall, Ithaca, NY, USA
    BMC Microbiol 13:156. 2013
    ..e., σL, σH, and σC; strains ΔBCH, ΔBCL, and ΔBHL) to eliminate potential redundancies between σ factors...
  12. doi request reprint Listeria monocytogenes lineages: Genomics, evolution, ecology, and phenotypic characteristics
    Renato H Orsi
    Department of Food Science, Cornell University, Ithaca, NY, USA
    Int J Med Microbiol 301:79-96. 2011
    ....
  13. pmc A population genetics-based and phylogenetic approach to understanding the evolution of virulence in the genus Listeria
    Henk C den Bakker
    Department of Food Science, Cornell University, Ithaca, New York 14853, USA
    Appl Environ Microbiol 76:6085-100. 2010
    ..Overall, our data suggest that, for some pathogens, loss of virulence genes may represent a selective advantage, possibly by facilitating adaptation to a specific ecological niche...
  14. ncbi request reprint Listeria monocytogenes internalins are highly diverse and evolved by recombination and positive selection
    Yeu Harn L Tsai
    Department of Food Science, Cornell University, Ithaca, NY, USA
    Infect Genet Evol 6:378-89. 2006
    ..monocytogenes, (iii) both intragenic recombination and positive selection have contributed to the evolution of L. monocytogenes internalins, and (iv) L. monocytogenes internalins show distinct evolutionary histories...
  15. pmc Recombination and positive selection contributed to the evolution of Listeria monocytogenes lineages III and IV, two distinct and well supported uncommon L. monocytogenes lineages
    Yeu Harn Lucy Tsai
    Department of Food Science, Cornell University, Ithaca, NY 14853, USA
    Infect Genet Evol 11:1881-90. 2011
    ....
  16. ncbi request reprint Culture independent analysis of ileal mucosa reveals a selective increase in invasive Escherichia coli of novel phylogeny relative to depletion of Clostridiales in Crohn's disease involving the ileum
    Martin Baumgart
    Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14850, USA
    ISME J 1:403-18. 2007
    ..coli is involved in the etiopathogenesis to Crohn's disease involving the ileum...
  17. pmc Genomic comparison of sporeforming bacilli isolated from milk
    Andrea I Moreno Switt
    345 Stocking Hall, Department of Food Science, Cornell University, Ithaca, NY 14853, USA
    BMC Genomics 15:26. 2014
    ....
  18. pmc Genomic characterization provides new insight into Salmonella phage diversity
    Andrea I Moreno Switt
    Department of Food Science, Cornell University, Ithaca, New York 14853, USA
    BMC Genomics 14:481. 2013
    ....
  19. pmc Phenotypic and transcriptomic analyses demonstrate interactions between the transcriptional regulators CtsR and Sigma B in Listeria monocytogenes
    Yuewei Hu
    Department of Food Science, 412 Stocking Hall, Cornell University, Ithaca, NY 14853, USA
    Appl Environ Microbiol 73:7967-80. 2007
    ..Our data demonstrate that interactions between CtsR and sigma(B) play an important role in L. monocytogenes stress resistance and virulence...
  20. ncbi request reprint Identification of Escherichia coli from groups A, B1, B2 and D in drinking water in Brazil
    Renato H Orsi
    Centro de Biologia Molecular e Engenharia Genetica, Universidade Estadual de Campinas, C P 6010, 13083 875, Campinas, S P, Brazil
    J Water Health 5:323-7. 2007
    ..The results obtained in this work suggest that PCR-based methods can be used for a rapid assessment of potentially pathogenic E. coli strains in water samples...
  21. pmc Regulatory network features in Listeria monocytogenes-changing the way we talk
    Veronica Guariglia-Oropeza
    Department of Food Science, Cornell University Ithaca, NY, USA
    Front Cell Infect Microbiol 4:14. 2014
    ..We point out the advantage that taking a "systems approach" could have for our understanding of gene functions, the detection of distant regulatory inputs, interspecies comparisons, and co-expression. ..