ArticleScientific reports2025
Nine complete chloroplast genomes of the Camellia genus provide insights into evolutionary relationships and species differentiation.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Comparative analysis of morphology and chloroplast genomes in endangered plantFrontiers in plant science · 2026Article
- Comparative chloroplast genomics clarifies the taxonomic status and supports molecular identification ofFrontiers in plant science · 2026Article
- The complete chloroplast genome and phylogenetic analysis ofMitochondrial DNA. Part B, Resources · 2026Article
- Near telomere-to-telomere genome assembly of Camellia pitardii.Scientific data · 2025Article
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Abstract
The genus Camellia, known for species such as Camellia japonica, is of significant agricultural and ecological importance. However, the genetic diversity and evolutionary relationships among Camellia species remain insufficiently explored. In this study, we successfully sequenced and assembled the complete chloroplast (cp) genomes of nine Camellia accessions, including the species Camellia petelotii, and eight varieties of C. Japonica (C. Japonica 'Massee Lane', C. Japonica 'L.T.Dees', C. Japonica 'Songzi', C. Japonica 'Kagirohi', C. Japonica 'Sanyuecha', C. Japonica 'Xiameng Hualin', C. Japonica 'Xiameng Wenqing', and C. Japonica 'Xiameng Xiaoxuan'). These genomes exhibited conserved lengths (~ 156,580-157,002 bp), indicating minimal variation in genome size. They consistently predicted 87 protein-coding genes, although variations were observed in the rRNA and tRNA genes. Structural and evolutionary analyses revealed the highly conserved nature of these cp genomes, with no significant inversions or gene rearrangements detected. Consistent codon usage patterns were observed across these accessions. Five hypervariable regions (rpsbK, psbM, ndhJ, ndhF, and ndhD) were identified as potential molecular markers for species differentiation. Phylogenetic analysis of 82 accessions from the Camellia genus, along with outgroup accessions revealed close genetic relationships among certain C. japonica varieties, including Songzi, Sanyuecha, L.T.Dees, and Kagirohi, which formed sister groups. Massee Lane was located within Sect. Camellia. Moreover, Xiameng Hualin, Xiameng Wenqing, Xiameng Xiaoxuan, and C. petelotii demonstrated a strong genetic affinity. These findings provide valuable insights into the structural and evolutionary dynamics of Camellia cp genomes, contributing to species identification and conservation.
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