All Stories

  1. A Signaling Pathway Involving the Diguanylate Cyclase CelR and the Response Regulator DivK Controls Cellulose Synthesis in Agrobacterium tumefaciens

    Article • Journal of Bacteriology, January 2014, ASM Journals

    Stephen K Farrand

  2. Quorum-Dependent Mannopine-Inducible Conjugative Transfer of an Agrobacterium Opine-Catabolic Plasmid

    Article • Journal of Bacteriology, December 2013, ASM Journals

    Stephen K Farrand

  3. CelR, an Ortholog of the Diguanylate Cyclase PleD of Caulobacter, Regulates Cellulose Synthesis in Agrobacterium tumefaciens

    Article • Applied and Environmental Microbiology, September 2013, ASM Journals

    Stephen K Farrand

  4. Reconciliation of Sequence Data and Updated Annotation of the Genome of Agrobacterium tumefaciens C58, and Distribution of a Linear Chromosome in the Genus Agrobacterium

    Article • Applied and Environmental Microbiology, December 2012, ASM Journals

    Stephen K Farrand

  5. Membership

    Article • Microbe Magazine, November 2012, ASM Journals

    Stephen K Farrand

  6. N- and C-terminal regions of the quorum-sensing activator TraR cooperate in interactions with the alpha and sigma-70 components of RNA polymerase

    Article • Molecular Microbiology, October 2009, Wiley

    Stephen K Farrand

  7. The S -Adenosyl- l -Homocysteine Hydrolase Gene ahcY of Agrobacterium radiobacter K84 Is Required for Optimal Growth, Antibiotic Production, and Biocontrol of Crown Gall Disease

    Article • Molecular Plant-Microbe Interactions, June 2009, Scientific Societies

    Stephen K Farrand

  8. Genome Sequences of Three Agrobacterium Biovars Help Elucidate the Evolution of Multichromosome Genomes in Bacteria

    Article • Journal of Bacteriology, February 2009, ASM Journals

    Stephen K Farrand, Prof QIANG CHEN

  9. The BlcC (AttM) Lactonase of Agrobacterium tumefaciens Does Not Quench the Quorum-Sensing System That Regulates Ti Plasmid Conjugative Transfer

    Article • Journal of Bacteriology, November 2008, ASM Journals

    Stephen K Farrand

  10. Broad-Host-Range Expression Vectors with Tightly Regulated Promoters and Their Use To Examine the Influence of TraR and TraM Expression on Ti Plasmid Quorum Sensing

    Article • Applied and Environmental Microbiology, July 2008, ASM Journals

    Stephen K Farrand

  11. Co-evolution of the agrocinopine opines and the agrocinopine-mediated control of TraR, the quorum-sensing activator of the Ti plasmid conjugation system

    Article • Molecular Microbiology, July 2008, Wiley

    Stephen K Farrand, Dr Phil M Oger

  12. Opine-Based Agrobacterium Competitiveness: Dual Expression Control of the Agrocinopine Catabolism (acc) Operon by Agrocinopines and Phosphate Levels

    Article • Journal of Bacteriology, March 2008, ASM Journals

    Stephen K Farrand

  13. Induction and Loss of Ti Plasmid Conjugative Competence in Response to the Acyl-Homoserine Lactone Quorum-Sensing Signal

    Article • Journal of Bacteriology, January 2008, ASM Journals

    Stephen K Farrand

  14. Multiple Superoxide Dismutases in Agrobacterium tumefaciens: Functional Analysis, Gene Regulation, and Influence on Tumorigenesis

    Article • Journal of Bacteriology, October 2007, ASM Journals

    Stephen K Farrand

  15. N-(3-Hydroxyhexanoyl)-l-Homoserine Lactone Is the Biologically Relevant Quormone That Regulates the phz Operon of Pseudomonas chlororaphis Strain 30-84

    Article • Applied and Environmental Microbiology, October 2007, ASM Journals

    Stephen K Farrand

  16. Molecular Basis of Transcriptional Antiactivation: TraM DISRUPTS THE TraR-DNA COMPLEX THROUGH STEPWISE INTERACTIONS

    Article • Journal of Biological Chemistry, May 2007, American Society for Biochemistry & Molecular Biology (ASBMB)

    Stephen K Farrand

  17. Bases of biocontrol: Sequence predicts synthesis and mode of action of agrocin 84, the Trojan Horse antibiotic that controls crown gall

    Article • Proceedings of the National Academy of Sciences, June 2006, Proceedings of the National Academy of Sciences

    Stephen K Farrand

  18. Activation of the phz Operon of Pseudomonas fluorescens 2-79 Requires the LuxR Homolog PhzR, N-(3-OH-Hexanoyl)-l-Homoserine Lactone Produced by the LuxI Homolog PhzI, and a cis-Acting phz Box

    Article • Journal of Bacteriology, September 2005, ASM Journals

    Stephen K Farrand

  19. Genes for utilization of deoxyfructosyl glutamine (DFG), an amadori compound, are widely dispersed in the family Rhizobiaceae

    Article • FEMS Microbiology Ecology, July 2005, Oxford University Press (OUP)

    Stephen K Farrand

  20. Dimerization properties of TraM, the antiactivator that modulates TraR-mediated quorum-dependent expression of the Ti plasmid tra genes

    Article • Molecular Microbiology, July 2004, Wiley

    Stephen K Farrand

  21. A Highly Selectable and Highly Transferable Ti Plasmid to Study Conjugal Host Range and Ti Plasmid Dissemination in Complex Ecosystems

    Article • Microbial Ecology, May 2004, Springer Science + Business Media

    Stephen K Farrand

  22. A partially disarmed vir helper plasmid, pKYRT1, in conjunction with 2,4-dichlorophenoxyactic acid promotes emergence of regenerable transgenic somatic embryos from immature cotyledons of soybean

    Article • Planta, February 2004, Springer Science + Business Media

    Stephen K Farrand

  23. In Situ Activation of the Quorum-Sensing Transcription Factor TraR by Cognate and Noncognate Acyl-Homoserine Lactone Ligands: Kinetics and Consequences

    Article • Journal of Bacteriology, October 2003, ASM Journals

    Stephen K Farrand

  24. Agrobacterium is a definable genus of the family Rhizobiaceae

    Article • INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, September 2003, Society for General Microbiology

    Stephen K Farrand, Dr Phil M Oger

  25. Mutational Analysis of TraR: CORRELATING FUNCTION WITH MOLECULAR STRUCTURE OF A QUORUM-SENSING TRANSCRIPTIONAL ACTIVATOR

    Article • Journal of Biological Chemistry, February 2003, American Society for Biochemistry & Molecular Biology (ASBMB)

    Stephen K Farrand

  26. Convergent Evolution of Amadori Opine Catabolic Systems in Plasmids of Agrobacterium tumefaciens

    Article • Journal of Bacteriology, January 2003, ASM Journals

    Stephen K Farrand

  27. Two Opines Control Conjugal Transfer of an Agrobacterium Plasmid by Regulating Expression of Separate Copies of the Quorum-Sensing Activator Gene traR

    Article • Journal of Bacteriology, February 2002, ASM Journals

    Stephen K Farrand

  28. Quorum-sensing system of Agrobacterium plasmids: Analysis and utility

    Article • January 2002, Elsevier

    Stephen K Farrand, Dr Phil M Oger

  29. Importance of the O-antigen, core-region and lipid A of rhizobial lipopolysaccharides for the induction of systemic resistance in potato to Globodera pallida

    Article • Nematology, January 2002, Brill

    Stephen K Farrand

  30. The Agrobacterium tumefaciens rndHomolog Is Required for TraR-Mediated Quorum-Dependent Activation of Ti Plasmid tra Gene Expression

    Article • Journal of Bacteriology, July 2001, ASM Journals

    Stephen K Farrand

  31. Intracellular Accumulation of Mannopine, an Opine Produced by Crown Gall Tumors, Transiently Inhibits Growth of Agrobacterium tumefaciens

    Article • Molecular Plant-Microbe Interactions, June 2001, Scientific Societies

    Stephen K Farrand

  32. Iron-Binding Compounds fromAgrobacterium spp.: Biological Control StrainAgrobacterium rhizogenes K84 Produces a Hydroxamate Siderophore

    Article • Applied and Environmental Microbiology, February 2001, ASM Journals

    Stephen K Farrand

  33. Construction of a Derivative of Agrobacterium tumefaciens C58 That Does Not Mutate to Tetracycline Resistance

    Article • Molecular Plant-Microbe Interactions, January 2001, Scientific Societies

    Stephen K Farrand

  34. Quorum-sensing signal binding results in dimerization of TraR and its release from membranes into the cytoplasm

    Article • The EMBO Journal, October 2000, Wiley

    Stephen K Farrand

  35. A Second T-Region of the Soybean-Supervirulent Chrysopine-Type Ti Plasmid pTiChry5, and Construction of a Fully Disarmed vir Helper Plasmid

    Article • Molecular Plant-Microbe Interactions, October 2000, Scientific Societies

    Stephen K Farrand, Dr Phil M Oger

  36. Renaming protein secretion in the Gram-negative bacteria

    Article • Trends in Microbiology, August 2000, Elsevier

    Stephen K Farrand

  37. The Bases of Crown Gall Tumorigenesis

    Article • Journal of Bacteriology, July 2000, ASM Journals

    Stephen K Farrand, Dr Phil M Oger

  38. TraG from RP4 and TraG and VirD4 from Ti Plasmids Confer Relaxosome Specificity to the Conjugal Transfer System of pTiC58

    Article • Journal of Bacteriology, March 2000, ASM Journals

    Stephen K Farrand

  39. Quorum Sensing but Not Autoinduction of Ti Plasmid Conjugal Transfer Requires Control by the Opine Regulon and the Antiactivator TraM

    Article • Journal of Bacteriology, February 2000, ASM Journals

    Stephen K Farrand

  40. High-efficiency induction of soybean hairy roots and propagation of the soybean cyst nematode

    Article • Planta, January 2000, Springer Science + Business Media

    Stephen K Farrand

  41. The Replicator of the Nopaline-Type Ti Plasmid pTiC58 Is a Member of the repABC Family and Is Influenced by the TraR-Dependent Quorum-Sensing Regulatory System

    Article • Journal of Bacteriology, January 2000, ASM Journals

    Stephen K Farrand

  42. Modulating quorum sensing by antiactivation: TraM interacts with TraR to inhibit activation of Ti plasmid conjugal transfer genes

    Article • Molecular Microbiology, October 1999, Wiley

    Stephen K Farrand

  43. Signal-dependent DNA binding and functional domains of the quorum-sensing activator TraR as identified by repressor activity

    Article • Proceedings of the National Academy of Sciences, August 1999, Proceedings of the National Academy of Sciences

    Stephen K Farrand

  44. Hierarchical gene regulatory systems arising from fortuitous gene associations: controlling quorum sensing by the opine regulon in Agrobacterium

    Article • Molecular Microbiology, June 1999, Wiley

    Stephen K Farrand

  45. Production of Acyl-Homoserine Lactone Quorum-Sensing Signals by Gram-Negative Plant-Associated Bacteria

    Article • Molecular Plant-Microbe Interactions, November 1998, Scientific Societies

    Stephen K Farrand

  46. Opine Catabolic Loci from Agrobacterium Plasmids Confer Chemotaxis to Their Cognate Substrates

    Article • Molecular Plant-Microbe Interactions, February 1998, Scientific Societies

    Stephen K Farrand

  47. Octopine-type Ti plasmids code for a mannopine-inducible dominant-negative allele of traR, the quorum-sensing activator that regulates Ti plasmid conjugal transfer

    Article • Molecular Microbiology, February 1998, Wiley

    Stephen K Farrand, Dr Phil M Oger

  48. Conjugal Plasmids and Their Transfer

    Article • January 1998, Springer Science + Business Media

    Stephen K Farrand

  49. Opines and Opine-Like Molecules Involved in Plant-Rhizobiaceae Interactions

    Article • January 1998, Springer Science + Business Media

    Stephen K Farrand

  50. Detecting and characterizing N -acyl-homoserine lactone signal molecules by thin-layer chromatography

    Article • Proceedings of the National Academy of Sciences, June 1997, Proceedings of the National Academy of Sciences

    Stephen K Farrand

  51. Modification of rhizobacterial populations by engineering bacterium utilization of a novel plant-produced resource

    Article • Nature Biotechnology, April 1997, Springer Science + Business Media

    Stephen K Farrand

  52. Expression of Multiple Eukaryotic Genes from a Single Promoter in Nicotiana

    Article • Nature Biotechnology, June 1995, Springer Science + Business Media

    Stephen K Farrand

  53. TraI, a LuxI homologue, is responsible for production of conjugation factor, the Ti plasmid N-acylhomoserine lactone autoinducer.

    Article • Proceedings of the National Academy of Sciences, May 1994, Proceedings of the National Academy of Sciences

    Stephen K Farrand

  54. Organization and Expression of the Genes on pAgK84 That Encode Production of Agrocin 84

    Article • Molecular Plant-Microbe Interactions, January 1994, Scientific Societies

    Stephen K Farrand

  55. Conjugation factor of Agrobacterium tumefaciens regulates Ti plasmid transfer by autoinduction

    Article • Nature, April 1993, Springer Science + Business Media

    Stephen K Farrand

  56. Conjugal Transfer of Agrobacterium Plasmids

    Article • January 1993, Springer Science + Business Media

    Stephen K Farrand

  57. Deletion derivatives of pAgK84 and their use in the analysis of Agrobacterium plasmid functions

    Article • Plasmid, November 1992, Elsevier

    Stephen K Farrand

  58. Mannityl Opine Accumulation and Exudation by Transgenic Tobacco

    Article • PLANT PHYSIOLOGY, February 1992, American Society of Plant Biologists (ASPB)

    Stephen K Farrand

  59. Induction of Pseudoactinorhizae by the Plant Pathogen Agrobacterium rhizogenes

    Article • PLANT PHYSIOLOGY, February 1992, American Society of Plant Biologists (ASPB)

    Stephen K Farrand

  60. Opine catabolism and conjugal transfer of the nopaline Ti plasmid pTiC58 are coordinately regulated by a single repressor.

    Article • Proceedings of the National Academy of Sciences, January 1992, Proceedings of the National Academy of Sciences

    Stephen K Farrand

  61. Do We Really Understand Crown Gall Control by Agrobacterium Radiobacter Strain K84?

    Article • January 1992, Springer Science + Business Media

    Stephen K Farrand

  62. Agrobacterium plasmids encode structurally and functionally different loci for catabolism of agrocinopine-type opines

    Article • September 1990, Springer Science + Business Media

    Stephen K Farrand

  63. Localization and Characterization of the Region Encoding Catabolism of Mannopinic Acid from the Octopine-Type Ti Plasmid pTi15955

    Article • Molecular Plant-Microbe Interactions, January 1990, Scientific Societies

    Stephen K Farrand

  64. Construction of a Tra? deletion mutant of pAgK84 to safeguard the biological control of crown gall

    Article • May 1988, Springer Science + Business Media

    Stephen K Farrand

  65. Genetic analysis of mannityl opine catabolism in octopine-type Agrobacterium tumefaciens strain 15955

    Article • MGG Molecular & General Genetics, June 1987, Springer Science + Business Media

    Stephen K Farrand

  66. Genetics and Molecular Biology of Agrocin Production and Sensitivity in Agrobacterium

    Article • January 1987, Springer Science + Business Media

    Stephen K Farrand

  67. Agrobacterium Ti and Ri Plasmids Specify Enzymic Lactonization of Mannopine to Agropine

    Article • Microbiology, September 1986, Society for General Microbiology

    Stephen K Farrand

  68. Diversity of determinants encoding carbenicillin, gentamicin, and tobramycin resistance in nosocomial Pseudomonas aeruginosa.

    Article • Antimicrobial Agents and Chemotherapy, August 1986, ASM Journals

    Stephen K Farrand

  69. Tn5 insertions in the agrocin 84 plasmid: The conjugal nature of pAgK84 and the locations of determinants for transfer and agrocin 84 production

    Article • Plasmid, March 1985, Elsevier

    Stephen K Farrand

  70. Induction of Cell Proliferation by Agrobacterium tumefaciens and A. Rhizogenes: A Parasite’s Point of View

    Article • January 1984, Springer Science + Business Media

    Stephen K Farrand

  71. Plasmid pSa Causes Loss of LPS-mediated Adherence in Agrobacterium

    Article • Microbiology, December 1983, Society for General Microbiology

    Stephen K Farrand

  72. Genetic isolation and physical characterization of pAgK84, the plasmid responsible for agrocin 84 production

    Article • Plasmid, September 1982, Elsevier

    Stephen K Farrand

  73. An R Plasmid of Serratia marcescens Transferable to Pseudomonas aeruginosa

    Article • Chemotherapy, January 1982, Karger Publishers

    Stephen K Farrand

  74. An R plasmid of broad host-range, coding for resistance to nine antimicrobial agents endemic in gram-negative nosocomial isolates

    Article • Journal of Medical Microbiology, November 1981, Society for General Microbiology

    Stephen K Farrand

  75. Suppression of tumorigenicity by the IncW R plasmid pSa in Agrobacterium tumefaciens

    Article • January 1981, Springer Science + Business Media

    Stephen K Farrand

  76. Hospital Isolates of Serratia marcescens Transferring Ampicillin, Carbenicillin, and Gentamicin Resistance to Other Gram-Negative Bacteria Including Pseudomonas aeruginosa

    Article • Antimicrobial Agents and Chemotherapy, January 1979, ASM Journals

    Stephen K Farrand

  77. THE CROWN GALL PROBLEM

    Article • January 1979, Elsevier

    Stephen K Farrand

  78. REGIONAL EDIT

    Article • The Nurse Practitioner, May 1976, Wolters Kluwer Health

    Stephen K Farrand

  79. Attempts to detect Agrobacterium tumefaciens and bacteriophage PS8 DNA in crown gall tumors by DNA · DNA-filter hybridization

    Article • Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, May 1975, Elsevier

    Stephen K Farrand

  80. Agrobacterium tumefaciens DNA and PS8 Bacteriophage DNA Not Detected in Crown Gall Tumors

    Article • Proceedings of the National Academy of Sciences, September 1974, Proceedings of the National Academy of Sciences

    Stephen K Farrand