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Mesoflavibacter profundi sp. nov. Isolated from a Deep-Sea Seamount
Dan-Yang Wang1,2, Qian Wang1,2, Jie Liu3
1Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, People's Republic of China.
Current Microbiology
|April 27, 2018
Summary
A novel aerobic bacterium, Mesoflavibacter profundi sp. nov. YC1039T, was discovered in the Mariana Trench. This Gram-negative rod expands the Mesoflavibacter genus with unique fatty acid and lipid profiles.
Area of Science:
- Microbiology
- Marine Biology
- Taxonomy
Background:
- The deep sea, particularly trenches, harbors unique microbial ecosystems.
- Understanding microbial diversity in extreme environments like the Mariana Trench is crucial for marine science.
Purpose of the Study:
- To isolate and characterize a novel bacterial strain from the Mariana Trench.
- To determine the phylogenetic and taxonomic position of the novel isolate.
Main Methods:
- Isolation of strain YC1039T from a seamount in the Mariana Trench.
- Phylogenetic analysis using 16S rRNA gene sequences.
- Analysis of cellular fatty acids, polar lipids, and respiratory quinones.
- Determination of genomic DNA G+C content.
Main Results:
- Strain YC1039T is a Gram-stain-negative, rod-shaped, aerobic bacterium.
- Phylogenetic analysis indicated its closest relatives are Mesoflavibacter sabulilitoris and Mesoflavibacter zeaxanthinifaciens.
- Predominant fatty acids were iso-C15:1 G and iso-C15:0, with MK-6 as the respiratory quinone.
- The genomic DNA G+C content was 29.8 mol%.
Conclusions:
- Strain YC1039T represents a novel species within the genus Mesoflavibacter.
- The proposed name for this new species is Mesoflavibacter profundi sp. nov.
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