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Thauera sedimentorum sp. nov., Isolated from Coastal Sediment
Jihye Baek1, Nattira Jaikwang1, Jong-Hwa Kim1
1Department of Microbiology, Chung-Ang University College of Medicine, Seoul, 06974, Republic of Korea.
Current Microbiology
|May 20, 2022
Summary
A novel bacterium, Thauera sedimentorum sp. nov., was identified from Korean sediment. This strictly aerobic, Gram-negative bacterium expands the known diversity within the Thauera genus.
Area of Science:
- Microbiology
- Bacteriology
- Environmental Science
Background:
- The genus Thauera comprises Gram-negative bacteria known for their metabolic versatility.
- Sediment environments are rich reservoirs of microbial diversity, often harboring novel species.
Purpose of the Study:
- To characterize and classify a newly isolated bacterium from a marine sediment sample.
- To determine the phylogenetic and genomic relationship of the isolate to existing Thauera species.
Main Methods:
- Isolation and cultivation of bacteria from sediment samples.
- 16S rRNA gene sequencing for phylogenetic analysis.
- Polyphasic taxonomic characterization including chemotaxonomic and genomic analyses.
- Whole-genome sequencing and comparative genomic analyses.
Main Results:
- Strain CAU 1555T, a Gram-negative, aerobic rod, was isolated from Jeju Island sediment.
- Phylogenetic analysis placed the isolate within the genus Thauera, closely related to Thauera hydrothermalis.
- Genomic data (ANI, AAI, dDDH) and chemotaxonomic profiles supported its designation as a novel species.
- The novel species was named Thauera sedimentorum sp. nov., with strain CAU 1555T as the type strain.
Conclusions:
- Thauera sedimentorum sp. nov. represents a new bacterial species discovered in a marine sediment environment.
- The study contributes to the understanding of microbial diversity and taxonomy within the genus Thauera.
- This finding highlights the potential for discovering novel microorganisms in underexplored environmental niches.
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