Comparative analysis of codon usage bias in the chloroplast genomes of eighteen Ampelopsideae species (Vitaceae)
文献类型： 外文期刊
作者： Hu, Qun 1 ; Wu, Jiaqi 1 ; Fan, Chengcheng 1 ; Luo, Yongjian 3 ; Liu, Jun 3 ; Deng, Zhijun 1 ; Li, Qing 3 ;
作者机构： 1.Hubei Minzu Univ, Hubei Key Lab Biol Resources Protect & Utilizat, Enshi 445000, Hubei, Peoples R China
2.Hubei Minzu Univ, Res Ctr Germplasm Engn Characterist Plant Resource, Dept Oncol, Enshi 445000, Hubei, Peoples R China
3.Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, Guangdong Key Lab Crop Germplasm Resources Preserv, Guangzhou 510640, Guangdong, Peoples R China
关键词： Ampelopsideae species; Chloroplast genome; Codon preference; Best codon; Cluster analysis
期刊名称：BMC GENOMIC DATA （ 影响因子：2.5； 五年影响因子：2.4 ）
ISSN：
年卷期： 2024 年 25 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundThe tribe Ampelopsideae plants are important garden plants with both medicinal and ornamental values. The study of codon usage bias (CUB) facilitates a deeper comprehension of the molecular genetic evolution of species and their adaptive strategies. The joint analysis of CUB in chloroplast genomes (cpDNA) offers valuable insights for in-depth research on molecular genetic evolution, biological resource conservation, and elite breeding within this plant family.ResultsThe base composition and codon usage preferences of the eighteen chloroplast genomes were highly similar, with the GC content of bases at all positions of their codons being less than 50%. This indicates that they preferred A/T bases. Their effective codon numbers were all in the range of 35-61, which indicates that the codon preferences of the chloroplast genomes of the 18 Ampelopsideae plants were relatively weak. A series of analyses indicated that the codon preference of the chloroplast genomes of the 18 Ampelopsideae plants was influenced by a combination of multiple factors, with natural selection being the primary influence. The clustering tree generated based on the relative usage of synonymous codons is consistent with some of the results obtained from the phylogenetic tree of chloroplast genomes, which indicates that the clustering tree based on the relative usage of synonymous codons can be an important supplement to the results of the sequence-based phylogenetic analysis. Eventually, 10 shared best codons were screened on the basis of the chloroplast genomes of 18 species.ConclusionThe codon preferences of the chloroplast genome in Ampelopsideae plants are relatively weak and are primarily influenced by natural selection. The codon composition of the chloroplast genomes of the eighteen Ampelopsideae plants and their usage preferences were sufficiently similar to demonstrate that the chloroplast genomes of Ampelopsideae plants are highly conserved. This study provides a scientific basis for the genetic evolution of chloroplast genes in Ampelopsideae species and their suitable strategies.
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