Identification and analysis of the biological activity of the new strain of Pseudoalteromonas piscicida isolated from the hemal fluid of the bivalve Modiolus kurilensis (F. R. Bernard, 1983)

A cultivated form of bacteria (strain 2202) was isolated from the hemal fluid of the bivalve mollusk Modiolus kurilensis . Based on the set of data collected by genetic and physiological/biochemical analyses, the strain was identified as the species Pseudoalteromonas piscicida. Strain 2202 exhibits...

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Bibliographic Details
Published in:Archives of microbiology 2021-09, Vol.203 (7), p.4461-4473
Main Authors: Eliseikina, Marina G., Beleneva, Irina A., Kukhlevsky, Andrey D., Shamshurina, Ekaterina V.
Format: Article
Language:English
Subjects:
Antiinfectives and antibacterials
Antimicrobial activity
Antimicrobial agents
Aquaculture
Biochemistry
Biological activity
Biomedical and Life Sciences
Biotechnology
Bivalvia
Cell Biology
E coli
Ecology
Eukaryotes
Genetic analysis
Hemolymph
Invertebrates
Larvae
Life Sciences
Microbial Ecology
Microbiology
Microflora
Microorganisms
Modiolus kurilensis
Mollusks
Original Paper
Predators
Probiotics
Pseudoalteromonas
Pseudomonas aeruginosa
Toxicity
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Summary:A cultivated form of bacteria (strain 2202) was isolated from the hemal fluid of the bivalve mollusk Modiolus kurilensis . Based on the set of data collected by genetic and physiological/biochemical analyses, the strain was identified as the species Pseudoalteromonas piscicida. Strain 2202 exhibits antimicrobial activity against Staphylococcus aureus , Candida albicans , and Bacillus subtilis but not against Escherichia coli and Pseudomonas aeruginosa. These activities characterize the behavior of strain 2202 as predator-like and classify it as a facultative predator. Being part of the normal microflora in the hemolymph of M. kurilensis , when external conditions change, strain 2202 shows features of opportunistic microflora. The strain 2202 exhibits selective toxicity towards larvae of various invertebrates: it impairs the early development of Mytilus edulis , but not of Strongylocentrotus nudus . Thus, the selective manner in which P. piscicida strains interact with various species of microorganisms and eukaryotes should be taken into consideration when using their biotechnological potential as a probiotic in aquaculture, source of antimicrobial substances, and factors that prevent fouling.
ISSN:0302-8933
1432-072X
DOI:10.1007/s00203-021-02432-1