ArticleBMC plant biology2025
Comparative chloroplast genomes and phylogenetic analyses shed new insights on the phyloevolution of different ploidy in Camellia reticulata.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
4 citing papers in PubMed.
- Soil Microbial Diversity and Its Environmental Drivers in the Rhizosphere Profile ofMicroorganisms · 2026Article
- Article
- Comprehensive analysis of chloroplast codon usage patterns in the important medicinal genusFrontiers in plant science · 2026Article
- The Complete Chloroplast Genome Sequence ofEcology and evolution · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCamellia reticulata Lindl. (C. reticulata) is the tallest ornamental camellia globally, with wild populations comprising a polyploid complex of diploids (2×), tetraploids (4×), and hexaploids (6×). The type specimen of C. reticulata is a heteroploid hexaploid derived from 2 × ancestors, including C. pitardii, C. saluenensis, and 2 × C. reticulata. Currently, limited information exists regarding the evolutionary characteristics of the chloroplast genomes of C. reticulata at different ploidy levels, and the phylogenetic position of 2 × and 4 × C. reticulata remains unclear.
resultsThis study sequenced, assembled, and annotated the chloroplast genomes of 2 × and 4 × C. reticulata, comparing them with those of 6 × C. reticulata and other closely related species. The results indicated that the chloroplast genome sizes of C. reticulata ranged from 156,519 to 156,927 bp, with gene counts, distributions, GC content, and codon usage being similar across different ploidy levels. The ycf1 gene exhibited significant differentiation among species, and was identified as a candidate for adaptive evolution in C. reticulata. Additionally, 11 highly differentiated intergenic regions were identified, with six hotspots of variation that can serve as molecular markers for genetic studies in C. reticulata populations. Analysis of selection pressure indicated that four genes were under positive selection. Phylogenetic analysis revealed that the polyploid complex of C. reticulata, along with C. pitardii, C. saluenensis, and C. mairei, formed a well-supported clade. The genetic distances between 6 × C. reticulata and its three 2 × ancestors were relatively small.
conclusionCamellia pitardii, C. saluenensis, and C. mairei may have participated in the allopolyploidization of C. reticulata, with both 2 × and 4 × C. reticulata have the potential for independent classification. These findings provide valuable insights into chloroplast genome alterations following allopolyploidization, establishing a crucial foundation for understanding the systematic evolutionary history of various ploidy levels in C. reticulata.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.