Flagella and Motility in Actinobacillus pleuropneumoniae
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Updated: Sep 27, 2026

High-throughput Method for Observing Motility Phenotypes in Pseudomonas aeruginosa
Published on: June 20, 2025
Erasmo Negrete-Abascal1, Magda E Reyes, Rosa M García
1Centro de Investigaciones en Ciencias Microbiológicas, Benemérita Universidad Autónoma de Puebla, Mexico. negretee@yahoo.com
Abstract:
Actinobacillus pleuropneumoniae has been considered nonmotile and nonflagellate. In this work, it is demonstrated that A. pleuropneumoniae produces flagella composed of a 65-kDa protein with an N-terminal amino acid sequence that shows 100% identity with those of Escherichia coli, Salmonella, and Shigella flagellins. The DNA sequence obtained through PCR of the fliC gene in A. pleuropneumoniae showed considerable identity (93%) in its 5' and 3' ends with the DNA sequences of corresponding genes in E. coli, Salmonella enterica, and Shigella spp. The motility of A. pleuropneumoniae was observed in tryptic soy or brain heart infusion soft agar media, and it is influenced by temperature. Flagella and motility may be involved in the survival and pathogenesis of A. pleuropneumoniae in pigs.
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