Mutations in the regulatory gene hrpG of Xanthomonas campestris pv. vesicatoria result in constitutive expression of all hrp genes.
hrpG is a key regulatory gene for transcriptional activation of pathogenicity genes (hrp) of Xanthomonas campestris pv. vesicatoria. We identified three mutations in hrpG which render hrp gene expression constitutive in normally suppressing medium. The mutations in hrpG result in novel amino acid substitutions compared to mutations in related proteins, such as OmpR. In addition, mutated hrpG enhances the timing and intensity of plant reactions in infection assays.
Wengelnik
K
K
Centre National de la Recherche Scientifique, Institut des Sciences Végétales, 91190 Gif-sur-Yvette, France.
Rossier
O
O
Bonas
U
U
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D015964:Gene Expression Regulation, Bacterial; D005809:Genes, Regulator; D008969:Molecular Sequence Data; D009154:Mutation; D010935:Plant Diseases / Q000382:microbiology*; D018515:Plant Leaves / Q000382:microbiology; D010947:Plants, Toxic; D014026:Nicotiana / Q000382:microbiology; D014157:Transcription Factors; D016959:Xanthomonas campestris / Q000235:genetics* / Q000378:metabolism / Q000472:pathogenicity
D001426:Bacterial Proteins; C102404:HrpG protein, Xanthomonas campestris; D014157:Transcription Factors