Mutations involved in the emergence of Yersinia ruckeri biotype 2 in France.
Yersinia ruckeri
biotype
flagella
mutation
Journal
Transboundary and emerging diseases
ISSN: 1865-1682
Titre abrégé: Transbound Emerg Dis
Pays: Germany
ID NLM: 101319538
Informations de publication
Date de publication:
May 2019
May 2019
Historique:
received:
22
01
2019
revised:
05
03
2019
accepted:
10
03
2019
pubmed:
16
3
2019
medline:
31
8
2019
entrez:
16
3
2019
Statut:
ppublish
Résumé
Yersina ruckeri is an enterobacteria responsible for Enteric redmouth disease (ERM), which causes significant economic losses in the aquaculture industry worldwide. Two biotypes have been described within Y. ruckeri: biotype 1 (BT1) and biotype 2 (BT2). Unlike BT1, BT2 is negative for motility and lipase secretion. The emergence of BT2 Y. ruckeri has been associated with disease outbreaks in vaccinated fish in several countries, notably France in the early 2000s. In this study, 15 BT2 strains (14 BT2 strains isolated in France and the BT2 reference strain EX5) were studied to compare the phenotypic characters of the BT1 and BT2 strains and to determine the genetic origin of the emergence of BT2 in France. BT1 bacteria are significantly longer in size than BT2 bacteria (a difference of 0.222 µm). The loss of motility of some French BT2 strains could be due to the loss of their ability to produce flagella caused by three mutations within the fliG, flhC and flgA genes. In the light of these results, the emergence of BT2 Yersinia ruckeri in France is discussed.
Substances chimiques
Bacterial Proteins
0
Flig protein, Bacteria
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1387-1394Informations de copyright
© 2019 Blackwell Verlag GmbH.