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Isolated from Populus euphratica rhizosphere soil, and mining their metabolites
Jia-Xin Zhang1,2, Yi-Huang Chen1,2, Xinrong Luo1,2
1Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production & Construction Corps, Xinjiang, China.
Frontiers in Microbiology
|March 6, 2025
Summary
Two new desert-dwelling Streptomyces species, Streptomyces solitudinis and Streptomyces rubellus, were discovered. These bacteria possess unique metabolic potential, including the production of aminoglycoside compounds like streptomycin.
Area of Science:
- Microbiology
- Environmental Science
- Biochemistry
Background:
- Desert ecosystems harbor vital microbial communities.
- Streptomyces are dominant genera in deserts, known for metabolic degradation and secondary metabolite synthesis.
Purpose of the Study:
- To investigate the metabolic potential of Streptomyces desertis.
- To isolate and characterize novel Streptomyces species from the Taklimakan Desert.
Main Methods:
- Isolation of Streptomyces strains from Populus euphratica rhizosphere soil.
- Identification using 16S rRNA sequencing, Average Nucleotide Identity (ANI), and digital DNA-DNA hybridization (dDDH).
- Phylogenetic, genomic, phenotypic, and chemotaxonomic analyses.
- Detection of aminoglycosides using HSQC-TOCSY and LC-MS/MS.
Main Results:
- Two new species, Streptomyces solitudinis sp. nov. (TRM 70351^T) and Streptomyces rubellus sp. nov. (TRM 70361^T), were identified.
- ANI and dDDH values confirmed their status as distinct species.
- Strain TRM 70351^T contains a gene cluster predicted to produce streptomycin.
- Aminoglycosides, neomycin, and streptomycin were detected in fermentation products.
Conclusions:
- This study expands the known species of Streptomyces deserticum.
- The discovery enhances the diversity of aminoglycoside-producing bacteria.
- Streptomyces solitudinis TRM 70351^T shows unique metabolic potential for future research.
