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Published on: March 15, 2016
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Algoriphagus litorisediminis sp. nov., isolated from a tidal flat.
Sooyeon Park1, Min-Ji Ha1, Sun Young Yoon1
1Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea.
Summary
A novel aerobic bacterium, Algoriphagus litorisediminis sp. nov. OITF-19T, was identified from a South Korean tidal flat. This Gram-negative rod represents a new species within the Algoriphagus genus, distinct from known species.
Area of Science:
- Microbiology
- Bacterial Taxonomy
- Environmental Microbiology
Background:
- Tidal flats are unique ecosystems supporting diverse microbial life.
- The genus Algoriphagus comprises aerobic, Gram-negative bacteria with ecological significance.
Purpose of the Study:
- To characterize a novel bacterial isolate from a South Korean tidal flat.
- To determine the taxonomic position of strain OITF-19T within the genus Algoriphagus.
Main Methods:
- Polyphasic taxonomic study including 16S rRNA gene sequencing.
- Phylogenetic analysis, DNA-DNA hybridization, and chemotaxonomic analyses (fatty acids, menaquinone, polar lipids).
- Determination of optimal growth conditions (temperature, pH, salinity).
Main Results:
- Strain OITF-19T is a Gram-negative, aerobic, rod-shaped bacterium.
- Phylogenetic analysis showed highest 16S rRNA similarity to Algoriphagus chungangensis (97.0%).
- DNA-DNA relatedness to A. chungangensis was 26%, indicating a new species. Major fatty acids included iso-C15:0 and iso-C17:0 3-OH; predominant menaquinone was MK-7. DNA G+C content was 38.3 mol%.
Conclusions:
- Strain OITF-19T represents a novel species, Algoriphagus litorisediminis sp. nov.
- The distinct phylogenetic and genetic characteristics support its classification as a new species.
- This finding expands the known diversity of the Algoriphagus genus in marine environments.
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