Comparison of genetic characteristics and pathogenicity of Lactococcus garvieae isolated from aquatic animals in Taiwan

Tsai, Ming‐An; Wang, Pei-Chyi; Liaw, Li-Ling; Yoshida, Terutoyo; Chen, Shih‐Chu

doi:10.3354/dao02516

Cited by 33 publications

(41 citation statements)

References 24 publications

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“…Different species of Pseudomonas and Aeromonas, and presumptive Cytophaga-like strains were also detected. Furthermore, gram-positive bacteria were also detected such as Bacillus and Staphylococcus (Hanlon and Forsythe 1990;Farto et al 2003;Tsai et al 2012;Fichi et al 2015). However, only V. alginolyticus or V. lentus have been confirmed with ability to cause lesions in octopus (Hanlon and Forsythe 1990;Farto et al 2003).…”

Section: Miscellaneous Bacteria Associated With Skin Lesionsmentioning

confidence: 99%

Bacteria-Affecting Cephalopods

Farto

Fichi

Gestal

et al. 2019

Handbook of Pathogens and Diseases in Cephalopods

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Bacterial pathogens contribute to obtain an unsuccessful production of cephalopods. An updated overview of the knowledge of these pathogens must be a valuable tool to improve their aquarium maintenance and aquaculture. The present work provides a description of the main bacterial pathogens associated with larval stages of cultured Octopus vulgaris, and juvenile and adults of several cephalopods. Vibrio species, reported with ability to cause vibriosis in aquaculture, are the main bacteria associated with skin lesions in adults. Different species of Pseudomonas and Aeromonas, among others, have also been detected. Furthermore, gram-positive bacteria such as Bacillus have been also described. Among them, V. alginolyticus, V. carchariae, V. parahaemolyticus, V. splendidus and V. lentus have also been isolated from sterile organs or fluids of animals and their potential as invaders proved. However, only V. alginolyticus or V. lentus has the ability to cause lesions, and, in addition, the last one is proved as the causative agent of death in octopuses. Other organs such as eyes of squids are also colonized by Vibrio species or Micrococcus sp., and recently Photobacterium swingsii and Lactococcus garvieae have been reported associated with a retrobulbar lesion in octopus. Rickettsial-like organisms (RLO) are also detected in the gills of the octopus, having a detrimental effect on the respiratory gaseous exchange of the animals. Cultures of octopus paralarvae show a genetically diverse community comparable to those reported previously from other marine hatcheries. Bacteria included in the Splendidus clade is the dominant group in all conditions, except in one of them, where V. alginolyticus, V.

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Section: Miscellaneous Bacteria Associated With Skin Lesionsmentioning

confidence: 99%

Bacteria-Affecting Cephalopods

Farto

Fichi

Gestal

et al. 2019

Handbook of Pathogens and Diseases in Cephalopods

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“…However, foodborne transmission of L. garvieae from aquatic products is mostly deduced from patients' clinical histories and isolates are often not further characterised on a molecular level. Thus far, only 2 reports confirming the association between a clinical case of L. garvieae infection and ingestion of raw seafood have been published (Wang et al 2007, Tsai et al 2012. The possibility exists that strains of piscine origin are responsible for human infections, but the data available to support this claim is insufficient.…”

Section: Host Rangementioning

confidence: 99%

Lactococcus garvieae: an emerging bacterial pathogen of fish

Meyburgh

Bragg²,

Boucher³

2017

Dis. Aquat. Org.

127

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Lactococcus garvieae is the causative agent of lactococcosis, a hyperacute, haemorrhagic septicaemia of fish. This bacterium is also considered an emerging zoonotic pathogen, as reports of human infection are increasing. Significant economic loss in aquaculture is suffered as a result of lactococcosis, as numerous freshwater and marine species of commercial interest are affected. Development of antibiotic resistance in L. garvieae to several chemotherapeutic agents complicates and restricts treatment options. Effective, sustainable treatment and prevention options are thus needed, but progress is impeded by the lack of knowledge concerning several aspects of the disease and the pathogen. This review aims to present the latest research on L. garvieae, with specific focus on pathogenesis, virulence factors, risks associated with chemotherapeutic administration and possible control options.

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“…For example, the presence of GAPDH at the surface of different pathogenic streptococci plays an important role in their virulence, promoting bacterial invasion of host cells and modulating host immune system response (Terao et al 2006;Madureira et al 2007;Oliveira et al 2012). In L. garvieae, this enzyme generally appears as a strongly immunogenic protein and can induce a protective immune response in fish (Shin et al 2007(Shin et al , 2009Tsai et al 2012).…”

Section: Immunoproteome Analysis/immunoblot Analysis Of L Garvieae Pmentioning

confidence: 99%

How does temperature influences the development of lactococcosis? Transcriptomic and immunoproteomic in vitro approaches

Castro

Reguera-Brito

López-Campos

et al. 2017

Journal of Fish Diseases

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Lactococcus garvieae is the aetiological agent of lactococcosis, a haemorrhagic septicaemia that affects marine and freshwater fish, with special incidence and economic relevance in farmed rainbow trout. Water temperature is one of the most important predisposing factors in the development of lactococcosis outbreaks. Lactococcosis in trout usually occur when water temperatures rise to about 18 °C, while fish carriers remain asymptomatic at temperatures below 13 °C. The aim of this work was to analyse the differences in the complete transcriptome response of L. garvieae grown at 18 °C and at 13 °C and to identify the immunogenic proteins expressed by this bacterium at 18 °C. Our results show that water temperature influences the expression of L. garvieae genes involved in the lysis of part of the bacterial cell population and in the cold response bacterial adaptation. Moreover, the surface immunogenic protein profile at 18 °C suggests an important role of the lysozyme-like enzyme, WxL surface proteins and some putative moonlighting proteins (proteins with more than one function, usually associated with different cellular locations) as virulence factors in L. garvieae. The results of this study could provide insights into the understanding of the virulence mechanisms of L. garvieae in fish.

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Comparison of genetic characteristics and pathogenicity of Lactococcus garvieae isolated from aquatic animals in Taiwan

Cited by 33 publications

References 24 publications

Bacteria-Affecting Cephalopods

Bacteria-Affecting Cephalopods

Lactococcus garvieae: an emerging bacterial pathogen of fish

How does temperature influences the development of lactococcosis? Transcriptomic and immunoproteomic in vitro approaches

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