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Isolation and Genetic Characterization of Streptococcus iniae Virulence Factors in Adriatic Sturgeon ( Acipenser naccarii)

Investigation article published in Microorganisms

April 22nd, 2022

The first case of infection of Streptococcus iniae in Adriatic sturgeon (Acipenser naccarii) was recently reported in a raceway system located in Northern Italy. A second episode of infection in sturgeons with absence of mortality and evident clinical signs, was registered in November 2020 in the same farm and is reported in this study. Histopathological changes observed in infected organs are described. The strains isolated in the two episodes were compared using molecular analysis based on PCR, phylogeny and virulence factors analysis. Not all the major virulence factors were detected for the two strains; in particular the strains 78697, isolated in November, lacks cpsD, compared to the strains 64844, isolated in September. Moreover, genetic variations were reported for lctO and pmg genes. These findings let us hypothesize a different virulence of the strains in accordance with clinical findings related to the sturgeons




Colussi S., Pastorino P., Mugetti D., Antuofermo E., Sciuto S., Esposito G., Polinas M., Tomasoni M., Burrai GP., Fernandez-Garayzabal JF., Acutis PL., Pedron C. and Prearo M.




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Isolation and Genetic Characterization of Streptococcus iniae Virulence Factors in Adriatic Sturgeon ( Acipenser naccarii)

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Isolation and Genetic Characterization of Streptococcus iniae Virulence Factors in Adriatic Sturgeon ( Acipenser naccarii)



Participants:

The Veterinary Medical Research Institute for Piemonte.

Department of Veterinary Medicine. Università de Sassari.

Universidad ComplutenseServicio de Identificación y Caracterización Microbiana (ICM). Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM).

Independent Researcher.







Microorganisms
FACTOR YEAR Q
4.926 2021

PMID: 35630328

ISSN: 2076-2607



TITLE: Isolation and Genetic Characterization of Streptococcus iniae Virulence Factors in Adriatic Sturgeon ( Acipenser naccarii)


JOURNAL: Microorganisms


NUMERACIÓN: 10(5):883


AÑO: 2022


PUBLISHER: MDPI AG


AUTHORS: Colussi S., Pastorino P., Mugetti D., Antuofermo E., Sciuto S., Esposito G., Polinas M., Tomasoni M., Burrai GP., Fernandez-Garayzabal JF., Acutis PL., Pedron C. and Prearo M.


VISAVET PARTICIPANTS


José Francisco Fernández-Garayzabal Fernández

DOI: https://doi.org/10.3390/microorganisms10050883


CITE THIS PUBLICATION:

Colussi S., Pastorino P., Mugetti D., Antuofermo E., Sciuto S., Esposito G., Polinas M., Tomasoni M., Burrai GP., Fernandez-Garayzabal JF., Acutis PL., Pedron C. and Prearo M. Isolation and Genetic Characterization of Streptococcus iniae Virulence Factors in Adriatic Sturgeon ( Acipenser naccarii). Microorganisms. 10(5):883. 2022. (A). ISSN: 2076-2607. DOI: 10.3390/microorganisms10050883


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