Identification of a proposed new serovar of Actinobacillus pleuropneumoniae: Serovar 16

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Abstract

Five Actinobacillus pleuropneumoniae strains isolated from pathological lesions of porcine pleuropneumonia in Hungary could not be assigned to any ofthe accepted 15 serovars. Using hyperimmune serum raised against these untypable- serovar A. pleuropneumoniae strains in rabbits, indirect haemagglutinationtests proved that they form a distinct group and there is no cross-reaction between them and the type strains of A. pleuropneumoniae. All five strains harboured thetoxin-associated genes for the production (apxIA) and secretion (apxIB) of ApxI, the gene for the expression of ApxII and the largest-size (2800 bp) apxIV gene. The carbon source utilisation pattern and the sequence analysis of the 16S rRNA gene confirmed the species identification of the suggested type strain, A. pleuropneumoniaeA-85/14. A new serovar of A. pleuropneumoniae - serovar 16 - is proposed with A. pleuropneumoniae A-85/14 as reference strain.

Original languageEnglish
Pages (from-to)444-450
Number of pages7
JournalActa veterinaria Hungarica
Volume63
Issue number4
DOIs
Publication statusPublished - dec. 2015

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ASJC Scopus subject areas

  • veterinary(all)

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