ArticleBMC genomics2026
The complete mitochondrial genome of Prinsepia uniflora (Rosaceae): De novo assembly, characterization, and phylogenetic analysis.
Article in BMC genomics, 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
backgroundPrinsepia uniflora is a shrub of considerable medicinal and ecological importance. Although a chromosome-scale nuclear genome assembly is available for this species, the mitochondrial (mt) genome remains uncharacterized, which has significantly restricted more comprehensive genomic and evolutionary studies of this species.
resultsUsing PacBio HiFi sequencing, we assembled the circular mt genome of P. uniflora, which spanned 328,095 bp and contained 35 protein-coding genes (PCGs), 18 tRNA genes, and 3 rRNA genes. Further analyses were conducted to characterize the mt genome, including assessments of codon usage, repeat sequences, and selective pressure. The results revealed an abundance of short repetitive sequences and preferential use of A/T-ending codons. The codon usage bias observed in PCGs appeared to be influenced by natural and artificial selection. In addition, 20 large fragments were identified as having been transferred from chloroplast genome to the mt genome. Collinearity analysis of the mt genome across Rosaceae species revealed a close relationship among P. uniflora, Prunus padus, and Prunus cerasus. Phylogenetic analyses using both maximum likelihood (ML) and Bayesian inference methods further clarified the evolutionary position of P. uniflora.
conclusionThis study presents the first mt genome assembly for the genus Prinsepia and provides a valuable genomic resource for future molecular research on this genus. Our study provides key insights into evolutionary relationships with the Rosaceae family.
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