Pili of Pasteurella multocida of porcine origin

Richard E. Isaacson, Emilio Trigo

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11 Scopus citations


Using electron microscopy, pili with at least two distinct morphologies were observed on strains of Pasteurella multocida isolated from pigs with atrophic rhinitis. Rigid pili were found on 60-80% of all cells observed. These pili had a strong tendency to lie flat along the side of the outer cell membrane of P. multocida and as a result frequently were difficult to see. After growth in vitro, piliated P. multocida cells produced few pili (approx. 3-5 per cell). Heavily piliated cells were occasionally observed. The second type of pili were curly and also were difficult to visualize. Cells from cultures containing piliated cells failed to attach to red blood cells and to immobilized mucus.

Original languageEnglish (US)
Pages (from-to)247-251
Number of pages5
JournalFEMS Microbiology Letters
Issue number3
StatePublished - Oct 15 1995


  • Adhesion
  • Atrophic rhinitis
  • Pasteurella multocida
  • Pili


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