ArticleCurrent microbiology2026
Cupriavidus smyrnaeus sp. nov., Isolated from Soil Litter Near an Arum sp.
Article in Current microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A Gram-stain-negative, rod-shaped, motile, aerobic bacterium, designated strain TA19ᵀ, was isolated from decaying plant litter collected near an Arum sp., using enrichment cultivation with potassium oxalate as the sole carbon source. Phylogenetic analysis of the 16S rRNA gene sequence confirmed that the strain belongs to the genus Cupriavidus. Although strain TA19ᵀ shared a high 16S rRNA gene sequence identity (> 99%) with several Cupriavidus type species, phylogenomic analysis revealed that it formed a distinct, well-supported cluster with C. oxalaticus. Genome sequencing (8.33 Mbp, 65.7% G + C) and overall genome-relatedness indices (ANIb, AAI, and dDDH) confirmed that strain TA19ᵀ represents a novel species within the genus Cupriavidus. Chemotaxonomic analysis showed that Q-8 was the predominant quinone, and the major cellular fatty acids (> 10% of the total fatty acids) were C16:0, summed feature 3 (comprised of C16:1 ω7c and C15:0 iso 2OH), and C18:1ω7c. The polar lipid profile comprised phosphatidylethanolamine, phosphatidylglycerol, and unidentified phospholipids. Based on the phenotypic and genotypic data, the strain represents a novel species within the genus Cupriavidus, for which the name Cupriavidus smyrnaeus sp. nov. is proposed. The type strain is TA19T (= NBRC 107719T =DSM 28348T =CCM 7673T).
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