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Updated: May 11, 2026
10:53
Establishment of a Clonal Culture of Unicellular Conjugating Algae
Published on: July 14, 2018
Algibacter undariae sp. nov., isolated from a brown algae reservoir
Sooyeon Park1, Jung-Sook Lee2, Keun-Chul Lee2
1Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, South Korea.
Summary
A novel bacterial species, Algibacter undariae, was discovered in a South Korean brown algae reservoir. This gliding, Gram-negative bacterium expands the known diversity within the Algibacter genus.
Area of Science:
- Microbiology
- Bacteriology
- Marine Biology
Background:
- The genus Algibacter comprises Gram-negative bacteria known for their gliding motility.
- Understanding bacterial diversity in marine environments is crucial for ecological and biotechnological applications.
Purpose of the Study:
- To isolate and characterize a novel bacterial strain from a brown algae reservoir.
- To determine the phylogenetic and taxonomic position of the novel strain within the genus Algibacter.
Main Methods:
- Isolation and cultivation of bacterial strain WS-MY9(T) from a brown algae reservoir.
- Phylogenetic analysis using 16S rRNA gene sequences.
- Determination of phenotypic characteristics, including optimal growth conditions, fatty acid composition, and polar lipid profiles.
- DNA G+C content determination and DNA-DNA hybridization experiments.
Main Results:
- Strain WS-MY9(T) is a Gram-stain-negative, non-flagellated, rod-shaped bacterium with gliding motility.
- Phylogenetic analysis showed WS-MY9(T) clustered with Algibacter lectus, with 98.5% 16S rRNA gene sequence similarity.
- Differential phenotypic properties and low DNA-DNA relatedness (15%) with A. lectus confirmed its distinctiveness.
- The major fatty acids were identified as anteiso-C15:0, iso-C17:0 3-OH, iso-C15:1 G, and iso-C15:0, with MK-6 as the predominant menaquinone.
Conclusions:
- Strain WS-MY9(T) represents a novel species within the genus Algibacter.
- The proposed name for this new species is Algibacter undariae sp. nov.
- The type strain is WS-MY9(T) (=KCTC 32259(T) =CCUG 63684(T)).
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