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Updated: Feb 7, 2026
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Measuring the Shape and Size of Activated Sludge Particles Immobilized in Agar with an Open Source Software Pipeline
Published on: January 30, 2019
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Arenimonas caeni sp. nov., isolated from activated sludge
Hongming Liu1, Lei Ren2, Peng Lu1
11Institute of Molecular Biology and Biotechnology, Anhui Provincial Key Lab. of the Conservation and Exploitation of Biological Resources, Anhui Normal University, No. 1 Beijing East Road, Wuhu, 241000, Anhui, PR China.
Summary
A novel bacterial strain, Arenimonas caeni, was identified in wastewater sludge. This motile, rod-shaped bacterium expands the known diversity within the Arenimonas genus.
Area of Science:
- Microbiology
- Environmental Science
- Bacteriology
Background:
- Wastewater treatment plants harbor diverse microbial communities.
- Understanding bacterial diversity is crucial for optimizing treatment processes.
Purpose of the Study:
- To isolate and characterize a novel bacterial strain from municipal wastewater sludge.
- To determine the phylogenetic and chemotaxonomic properties of the novel isolate.
Main Methods:
- Isolation of strain z29T from active sludge.
- 16S rRNA gene sequencing for phylogenetic analysis.
- Analysis of respiratory quinones, cellular fatty acids, and polar lipids.
- Determination of genomic DNA G+C content and average nucleotide identity.
Main Results:
- Strain z29T is a Gram-negative, motile, rod-shaped bacterium.
- Phylogenetic analysis placed strain z29T within the genus Arenimonas, with highest similarity to Arenimonas donghaensis.
- Chemotaxonomic data (ubiquinone 8, major fatty acids, polar lipids) and G+C content (70.2 mol%) supported its distinct identity.
- Genomic comparison showed 83.72% average nucleotide identity with Arenimonas donghaensis.
Conclusions:
- Strain z29T represents a novel species of the genus Arenimonas.
- The proposed name for this new species is Arenimonas caeni sp. nov.
- This discovery contributes to the understanding of microbial diversity in engineered ecosystems.
Keywords:
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