Avirulence gene D of Pseudomonas syringae pv. Tomato may have undergone horizontal gene transfer

Theodor Hanekamp, Donald Kobayashi, Scott Hayes, Mark M. Stayton

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Avirulence gene D (avrD) is carried on the B-plasmid of the plant pathogen Pseudomonas syringae pv. tomato with plasmid-borne avrD homologs widely distributed among the Pseudomonads. We now report sequences in the soft rot pathogen Erwinia carotovora that cross-hybridize to avrD suggesting a conserved function beyond avirulence. Alternatively, avrD may have been transferred horizontally among species: (i) DNA linked to avrD shows evidence of class II transpositions and contains a novel IS3-related insertion sequence, and (ii) short sequences linked to avrD are similar to pathogenicity genes from a variety of unrelated pathogens, We have also identified the gene cluster that controls B-plasmid stability.

Original languageEnglish (US)
Pages (from-to)40-44
Number of pages5
JournalFEBS Letters
Volume415
Issue number1
DOIs
StatePublished - Sep 22 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

Keywords

  • IS1240
  • Insertion sequence
  • Pseudomonas syringae pv.
  • avrD
  • tomato

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