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Updated: Jan 24, 2026
05:33
Isolation of Soil Microorganisms Using iChip Technology
Published on: January 10, 2025
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Paenibacillus luteus sp. nov., isolated from soil
Ying Zhang1, Junli Zhuang1, Huancheng Pang2
1Key Laboratory of Molecular Medicine and Biotherapy, School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China.
Summary
A novel bacterium, Paenibacillus luteus R-3T, was identified from a Chinese lake soil sample. Phylogenetic and phenotypic analyses confirm it represents a new species within the Paenibacillus genus.
Area of Science:
- Microbiology
- Bacteriology
- Taxonomy
Background:
- Soil microbial communities harbor diverse bacterial species.
- Accurate bacterial classification is crucial for understanding ecological roles and potential applications.
Purpose of the Study:
- To isolate and characterize a novel bacterial strain from a soil sample.
- To determine the taxonomic position of the novel isolate using polyphasic characterization.
Main Methods:
- Isolation and cultivation of bacteria from soil.
- Gram staining, aerobic growth, motility, and spore formation tests.
- 16S rRNA gene sequencing for phylogenetic analysis.
- Chemotaxonomic analyses including fatty acid profiling and polar lipid composition.
- DNA G+C content determination and DNA-DNA hybridization.
Main Results:
- A novel Gram-positive, aerobic, motile, spore-forming rod, strain R-3T, was isolated.
- Phylogenetic analysis placed strain R-3T within the genus Paenibacillus, with 98.4% 16S rRNA gene similarity to Paenibacillus sinopodophylli.
- Strain R-3T exhibited distinct phenotypic characteristics, including inability to assimilate d-glucose.
- Chemotaxonomic data (MK-7, major fatty acids anteiso-C15:0 and C16:0) supported its placement in Paenibacillus.
- DNA-DNA relatedness between strain R-3T and P. sinopodophylli was low (21.2%), confirming it as a distinct species.
- DNA G+C content was 47.0 mol%.
Conclusions:
- Strain R-3T represents a novel species of the genus Paenibacillus.
- The proposed name for the novel species is Paenibacillus luteus sp. nov.
- The type strain is R-3T (=CGMCC 1.16135T=KCTC 33912T).
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