Enterovibrio baiacu sp. nov.
Gustavo P R Azevedo1, Hannah K Mattsson1, Luciana R Appolinario1
1Institute of Biology and SAGE-COPPE, Federal University of Rio de Janeiro, Avenida Carlos Chagas Fo, s/n, Bloco A, Ilha Do Fundão, Rio de Janeiro, RJ, CEP 21941-590, Brazil.
Current Microbiology
|October 18, 2019
Summary
A new bacterial species, Enterovibrio baiacu, was discovered in pufferfish. Genomic analysis confirmed its unique status, distinguishing it from related Enterovibrio species.
Area of Science:
- Microbiology
- Genomics
- Marine Biology
Background:
- The Enterovibrio genus comprises bacteria found in marine environments.
- Understanding bacterial diversity in marine organisms like pufferfish is crucial for ecological and health assessments.
Purpose of the Study:
- To characterize a novel bacterial isolate obtained from the pufferfish Sphoeroides spengleri.
- To determine the taxonomic placement of the novel isolate using genomic data.
Main Methods:
- Isolation and cultivation of bacteria from pufferfish viscera.
- Genomic DNA extraction and sequencing.
- Comparative genomic analysis including average amino acid identity (AAI), average nucleotide identity (ANI), and genome-to-genome distance (GGDH).
- In silico phenotyping for feature analysis.
Main Results:
- A novel bacterial species, designated Enterovibrio baiacu sp. nov. (strain A649T), was identified from pufferfish.
- Genomic analysis showed <95% AAI/ANI and <70% GGDH similarity to its closest known relatives, confirming its novel species status.
- The nearly complete genome assembly of strain A649T comprises 5.4 Mbp with 4826 coding genes.
- In silico phenotyping revealed distinguishing features for related Enterovibrio species.
Conclusions:
- The isolate A649T represents a new species within the Enterovibrio genus, named Enterovibrio baiacu.
- Genomic data provides a robust basis for the classification of this novel species.
- Identified genomic features can aid in differentiating Enterovibrio baiacu from other species in the genus.
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