Codon usage patterns and genomic variation analysis of chloroplast genomes provides new insights into the evolution of Aroideae
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View abstract on PubMed
Summary
This summary is machine-generated.Analyzing chloroplast genomes of 61 Aroideae species reveals codon usage bias influenced by natural selection. Highly divergent regions like ndhE show potential as DNA markers for taxonomy and understanding phylogenetic relationships.
Area Of Science
- Botany and Plant Science
- Genomics and Bioinformatics
- Evolutionary Biology
Background
- Aroideae subfamily plants possess significant medicinal and edible value.
- Morphological identification of Aroideae species is challenging due to phenotypic variation.
- Chloroplast genomes (CPGs) and codon usage bias (CUB) offer insights into plant taxonomy and phylogeny.
Purpose Of The Study
- To investigate codon usage bias in Aroideae chloroplast genomes.
- To identify variable regions for DNA barcoding.
- To clarify phylogenetic relationships within the Aroideae subfamily.
Main Methods
- Comparative analysis of chloroplast genomes from 61 Aroideae species.
- Analysis of codon usage bias using ENC-plot and PR2-plot.
- Construction of phylogenetic trees using maximum likelihood.
- Principal component clustering analysis based on relative synonymous codon usage (RSCU).
Main Results
- Aroideae CPG coding sequences exhibit AT-richness (GC content 37.91%).
- Natural selection is the dominant factor influencing CUB.
- Eight highly divergent regions identified, with ndhE showing potential as a DNA marker.
- Phylogenetic trees and RSCU clustering support distinct evolutionary pathways for certain genera.
Conclusions
- CPG analysis and CUB provide valuable tools for Aroideae taxonomy and phylogeny.
- The ndhE region is a promising marker for species discrimination.
- RSCU-based clustering offers theoretical support for classification and evolutionary studies.
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