ArticleBMC genomics2024
The complete mitochondrial genome assembly of Capsicum pubescens reveals key evolutionary characteristics of mitochondrial genes of two Capsicum subspecies.
Article in BMC genomics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Article
- Mitochondrial genome of the invasive weed Amaranthus palmeri: structural features, RNA editing, and evolutionary insights.BMC plant biology · 2026Article
- Characterization of the Complete Mitochondrial Genome ofBiology · 2026Article
- From High-Density Genomic Mapping to Precision Molecular Breeding: A Comprehensive Review ofGenes · 2026Review
- Complete mitogenome and phylogenetic analysis of the tertiary relict shrubMitochondrial DNA. Part B, Resources · 2026Article
- The complete mitochondrial genome ofMitochondrial DNA. Part B, Resources · 2026Article
- Assembly and comparative analysis of chromosomal mitochondrial genomes in multiple Medicago species.BMC plant biology · 2025Article
- The cucumber (Cucumis sativus L.) mitochondrial genome: intraspecific structural variation, repetitive architecture, and comparative evolutionary dynamics.BMC plant biology · 2025Article
- The characterisation of the complete mitochondrial genome of Polygonatum Kingianum reveals recombination mediated by repeats associated with DNA replication.Scientific reports · 2025Article
- Assembly and comparative analysis of the complete mitochondrial genome of Echinacanthus longipes (Acanthaceae), endemic to the Sino-Vietnamese karst flora.BMC genomics · 2025Article
- Mitochondrial genome complexity in Erodium stephanianum (Geraniaceae): nanopore sequencing reveals chloroplast gene transfer and DNA rearrangements.Frontiers in genetics · 2025Article
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Abstract
backgroundPepper (Capsicum pubescens), one of five domesticated pepper species, has unique characteristics, such as numerous hairs on the epidermis of its leaves and stems, black seeds, and vibrant purple flowers. To date, no studies have reported on the complete assembly of the mitochondrial genome (mitogenome) of C. pubescens. Understanding the mitogenome is crucial for further research on C. pubescens.
resultsIn our study, we successfully assembled the first mitogenome of C. pubescens, which was assigned the GenBank accession number OP957066. This mitogenome has a length of 454,165 bp and exhibits the typical circular structure observed in most mitogenomes. We annotated a total of 70 genes, including 35 protein-coding genes (PCGs), 30 tRNA genes, 3 rRNA genes, and 2 pseudogenes. Compared to the other three pepper mitogenomes (KJ865409, KJ865410, and MN196478), C. pubescens OP957066 exhibited four unique PCGs (atp4, atp8, mttB, and rps1), while two PCGs (rpl10 and rps3) were absent. Notably, each of the three pepper mitogenomes from C. annuum (KJ865409, KJ865410, and MN196478) experienced the loss of four PCGs (atp4, atp8, mttB, and rps1). To further explore the evolutionary relationships, we reconstructed a phylogenetic tree using the mitogenomes of C. pubescens and fourteen other species. Structural comparison and synteny analysis of the above four pepper mitogenomes revealed that C. pubescens shares high sequence similarity with KJ865409 and that C. pubescens has rearranged with the other three pepper mitogenomes. Interestingly, we observed 72 similar sequences between the mitochondrial and chloroplast genomes, which accounted for 12.60% of the mitogenome, with a total length of 57,207 bp. These sequences encompassed 12 tRNA genes and the rRNA gene (rrn18). Remarkably, selective pressure analysis suggested that the nad5 gene underwent obvious positive selection. Furthermore, a single-base mutation in three genes (nad1, nad2, and nad4) resulted in an amino acid change.
conclusionThis study provides a high-quality mitogenome of pepper, providing valuable molecular data for future investigations into the exchange of genetic information between pepper organelle genomes.
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