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Updated: Dec 28, 2025

Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution
Published on: December 30, 2021
Extensimonas perlucida sp. nov., a Novel Bacterium Isolated from Sludge
Qian Peng1, Mengyao Sheng1, Zhou Yang1
1Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
A novel bacterium, Extensimonas perlucida HX2-24T, was identified from pesticide wastewater. This discovery expands the known diversity of the Extensimonas genus and offers insights into microbial communities in industrial environments.
Area of Science:
- Microbiology
- Environmental Science
- Bacteriology
Background:
- Activated sludge is crucial for treating industrial wastewater, including that from pesticide manufacturing.
- Understanding the microbial composition of such environments is key to optimizing bioremediation processes.
Purpose of the Study:
- To isolate and characterize a novel bacterial species from activated sludge treating pesticide-manufacturing wastewater.
- To determine the taxonomic placement of the novel isolate within the genus Extensimonas.
Main Methods:
- Isolation and cultivation of bacteria from activated sludge.
- 16S rRNA gene sequencing for phylogenetic analysis.
- Chemotaxonomic analysis (fatty acids, polar lipids) and genomic analysis (ANI, dDDH, G+C content).
Main Results:
- A novel bacterium, designated HX2-24T, was isolated and characterized.
- Phylogenetic analysis showed HX2-24T formed a distinct clade with Extensimonas vulgaris.
- Genomic data (ANI 92%, dDDH 41%) and chemotaxonomic profiles supported its classification as a new species, Extensimonas perlucida sp. nov.
Conclusions:
- Strain HX2-24T represents a new species, Extensimonas perlucida sp. nov., within the genus Extensimonas.
- This finding contributes to the understanding of bacterial diversity in specialized industrial wastewater treatment systems.
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