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Simultaneous DNA-RNA Extraction from Coastal Sediments and Quantification of 16S rRNA Genes and Transcripts by Real-time PCR
Published on: June 11, 2016
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Aliidiomarina celeris sp. nov., isolated from coastal sediment
Xu-Ting Wang1, Ji-Ru Han1, Wei-Shuang Zheng1
11College of Marine Science, Shandong University, Weihai 264209, PR China.
International Journal of Systematic and Evolutionary Microbiology
|November 21, 2018
Summary
A novel marine bacterium, Aliidiomarinaceleris sp. nov., was discovered in Chinese coastal sediments. This facultative anaerobic bacterium expands the known diversity within the Aliidiomarina genus.
Area of Science:
- Microbiology
- Marine Biology
- Bacterial Taxonomy
Background:
- Marine sediments are rich reservoirs of microbial diversity.
- The genus Aliidiomarina comprises marine bacteria with significant ecological roles.
- Characterization of novel species is crucial for understanding marine microbial ecosystems.
Purpose of the Study:
- To isolate and characterize a novel bacterium from marine sediment.
- To determine the phylogenetic and chemotaxonomic properties of the isolate.
- To formally propose a new species within the Aliidiomarina genus.
Main Methods:
- Isolation and cultivation of bacteria from marine sediment samples.
- Gram staining, motility, and growth condition analysis (NaCl, pH, temperature).
- Phylogenetic analysis using 16S rRNA gene sequencing.
- Chemotaxonomic analyses including quinone profiling, fatty acid analysis, and polar lipid composition.
- DNA G+C content determination.
Main Results:
- A novel Gram-negative, heterotrophic, facultative anaerobic bacterium (strain F3105T) was isolated.
- Strain F3105T exhibited optimal growth at 2.0-3.0% NaCl, pH 7.5, and 37°C.
- Phylogenetic analysis placed strain F3105T within the genus Aliidiomarina, closely related to A. shirensis (95.9% similarity).
- Chemotaxonomic data (Q-8, major fatty acids, polar lipids) and DNA G+C content (49.5 mol%) supported its distinctiveness.
- The bacterium was identified as a new species, Aliidiomarinaceleris sp. nov.
Conclusions:
- Strain F3105T represents a novel species of the genus Aliidiomarina, named Aliidiomarinaceleris sp. nov.
- The phenotypic and phylogenetic data confirm its status as a distinct species.
- This discovery contributes to the understanding of marine bacterial diversity and the Aliidiomarina genus.
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