Open AccessPili of Pasteurella multocida of porcine origin
Author(s) -
Isaacson Richard E.,
Trigo Emilio
Publication year - 1995
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1995.tb07841.x
Subject(s) - pilus , pasteurella multocida , microbiology and biotechnology , pasteurellaceae , bacterial outer membrane , biology , pasteurella , in vitro , fimbria , electron microscope , mucus , bacteria , haemophilus influenzae , biochemistry , optics , virulence , escherichia coli , genetics , physics , gene , antibiotics , ecology
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.