Multicellular and aggregative behaviour of Salmonella typhimurium strains is controlled by mutations in the agfD promoter.

@article{Rmling1998MulticellularAA,
  title={Multicellular and aggregative behaviour of Salmonella typhimurium strains is controlled by mutations in the agfD promoter.},
  author={Ute R{\"o}mling and Walter D. Sierralta and Kristofer Eriksson and Staffan J. Normark},
  journal={Molecular microbiology},
  year={1998},
  volume={28 2},
  pages={
          249-64
        }
}
A colony morphology type is described in which cells of Salmonella typhimurium form a rigid multicellular network with expression of thin aggregative fimbriae that mediate tight intercellular bonds. Surface translocation of cells on plates and adherence to glass and polystyrene surfaces in biofilm assays are further characteristics of the morphotype. This morphotype (rdar) is normally expressed only at low temperature. However, in two unrelated S. typhimurium strains, spontaneous mutants were… CONTINUE READING
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