Genetic diversity and phenotypic characterization of Iodobacter limnosediminis associated with skin lesions in freshwater fish

© 2021 The Authors. Journal of Fish Diseases published by John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Journal of fish diseases. - 1998. - 44(2021), 11 vom: 30. Nov., Seite 1711-1724
1. Verfasser: Korkea-Aho, Tiina Liisa (VerfasserIn)
Weitere Verfasser: Viljamaa-Dirks, Satu, Heinikainen, Sirpa, Kuronen, Henry, Tiirola, Marja
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Journal of fish diseases
Schlagworte:Journal Article Iodobacter limnosediminis freshwater fish skin lesions DNA, Bacterial
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520 |a The relatively unknown genus Iodobacter sp. has been repeatedly isolated from skin ulcers and saprolegniosis on freshwater fish in Finland, especially farmed salmonids. Genetic characterization verified that all 23 bacterial isolates studied here belonged to the species Iodobacter limnosediminis, previously undescribed from the fish microbiota. Whole-genome pulsed-field gel electrophoresis revealed variability between the I. limnosediminis strains, suggesting that they were most likely of environmental origin. Two I. limnosediminis strains caused lesions in 27%-53% of brown trout (Salmo trutta) injected intramuscularly (p ≤ .05). The lesions represented moderate to severe tissue damage, but for most fish, the tissues had been repaired by the end of the experiment through the accumulation of fibrocytes and macrophages at the site of the lesion. I. limnosediminis was reisolated from some lesions and/or internal organs. Phenotypically and biochemically, I. limnosediminis resembles several common bacterial species found in the aquatic environment, as it grows well on several media as whitish medium-sized colonies, is Gram negative and rod-shaped. Here, we characterized I. limnosediminis strains with several methods, including MALDI-TOF. This characterization will help in further investigations into the occurrence and possible involvement of I. limnosediminis in skin lesions of freshwater fish 
650 4 |a Journal Article 
650 4 |a Iodobacter limnosediminis 
650 4 |a freshwater fish 
650 4 |a skin lesions 
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700 1 |a Viljamaa-Dirks, Satu  |e verfasserin  |4 aut 
700 1 |a Heinikainen, Sirpa  |e verfasserin  |4 aut 
700 1 |a Kuronen, Henry  |e verfasserin  |4 aut 
700 1 |a Tiirola, Marja  |e verfasserin  |4 aut 
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