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Paracoccus lichenicola sp. nov., Isolated from Lichen
Lei Lang1, De-Feng An1, Long-Qian Jiang1
1Yunnan Institute of Microbiology, Key Laboratory for Conservation and Utilization of Bio-Resource, School of Life Sciences, Yunnan University, Kunming, People's Republic of China.
Current Microbiology
|January 3, 2021
Summary
A novel bacterium, Paracoccus lichenicola sp. nov., was discovered in a lichen from China. This aerobic, Gram-negative bacterium expands the known diversity within the Paracoccus genus.
Area of Science:
- Microbiology
- Bacteriology
- Taxonomy
Background:
- The genus Paracoccus is known for its metabolic diversity and presence in various environments.
- Lichen-associated microorganisms represent a largely untapped source of novel bacterial species.
Purpose of the Study:
- To characterize and classify a novel bacterial strain isolated from a lichen.
- To determine the phylogenetic and genomic relationship of the novel strain to existing Paracoccus species.
Main Methods:
- Polyphasic taxonomic characterization including phenotypic, chemotaxonomic, and phylogenetic analyses.
- 16S rRNA gene sequencing for phylogenetic placement.
- Genome sequencing to determine DNA G+C content, Average Nucleotide Identity (ANI), and digital DNA-DNA hybridization (dDDH).
Main Results:
- Strain YIM 132242T exhibited characteristics of the genus Paracoccus, including aerobic, Gram-negative, short-rod shape.
- Phylogenetic analysis based on 16S rRNA gene sequences showed highest similarity to Paracoccus aerius (97.0%).
- Genomic analysis revealed a DNA G+C content of 67.1 mol%, with ANI (85.4%) and dDDH (29.1%) values below thresholds for species delineation with P. aerius.
Conclusions:
- Strain YIM 132242T represents a distinct novel species within the genus Paracoccus.
- The proposed name for this novel species is Paracoccus lichenicola sp. nov.
- The type strain is YIM 132242T, with accession numbers KCTC 72463T and CGMCC1.17191T.
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