KIB OpenIR
Correlation Analysis Reveals an Important Role of GC Content in Accumulation of Deletion Mutations in the Coding Region of Angiosperm Plastomes
Yu,Ying; Li,Hong-Tao; Wu,Yu-Huan; Li,De-Zhu
2021
Source PublicationJOURNAL OF MOLECULAR EVOLUTION
ISSN0022-2844
Volume89Issue:1-2Pages:73-80
AbstractVariation in GC content is assumed to correlate with various processes, including mutation biases, recombination, and environmental parameters. To date, most genomic studies exploring the evolution of GC content have focused on nuclear genomes, but relatively few have concentrated on organelle genomes. We explored the mechanisms maintaining the GC content in angiosperm plastomes, with a particular focus on the hypothesis of phylogenetic dependence and the correlation with deletion mutations. We measured three genetic traits, namely, GC content, A/T tracts, and G/C tracts, in the coding region of plastid genomes for 1382 angiosperm species representing 350 families and 64 orders, and tested the phylogenetic signal. Then, we performed correlation analyses and revealed the variation in evolutionary rate of selected traits using RRphylo. The plastid GC content in the coding region varied from 28.10% to 43.20% across angiosperms, with a few non-photosynthetic species showing highly reduced values, highlighting the significance of functional constraints. We found strong phylogenetic signal in A/T tracts, but weak ones in GC content and G/C tracts, indicating adaptive potential. GC content was positively and negatively correlated with G/C and A/T tracts, respectively, suggesting a trade-off between these two deletion events. GC content evolved at various rates across the phylogeny, with significant increases in monocots and Lamiids, and a decrease in Fabids, implying the effects of some other factors. We hypothesize that variation in plastid GC content might be a mixed strategy of species to optimize fitness in fluctuating climates, partly through influencing the trade-off between AT -> GC and GC -> AT mutations.
KeywordBase composition variation AT-biased deletion mutation Phylogenetic relatedness Functional constraints Energy resource competition Rrphylo BIASED GENE CONVERSION EVOLUTIONARY RATE VARIATION BASE COMPOSITION PLASTID GENOMES PHYLOGENETIC SIGNAL MISMATCH REPAIR SELECTION SLIPPAGE PLANTS RATES
DOI10.1007/s00239-020-09987-5
WOS IDWOS:000607343600001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/73201
Collection中国科学院昆明植物研究所
Affiliation1.[Yu, Ying
2.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 311121, Peoples R China
3.[Li, Hong-Tao
4.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Yu,Ying,Li,Hong-Tao,Wu,Yu-Huan,et al. Correlation Analysis Reveals an Important Role of GC Content in Accumulation of Deletion Mutations in the Coding Region of Angiosperm Plastomes[J]. JOURNAL OF MOLECULAR EVOLUTION,2021,89(1-2):73-80.
APA Yu,Ying,Li,Hong-Tao,Wu,Yu-Huan,&Li,De-Zhu.(2021).Correlation Analysis Reveals an Important Role of GC Content in Accumulation of Deletion Mutations in the Coding Region of Angiosperm Plastomes.JOURNAL OF MOLECULAR EVOLUTION,89(1-2),73-80.
MLA Yu,Ying,et al."Correlation Analysis Reveals an Important Role of GC Content in Accumulation of Deletion Mutations in the Coding Region of Angiosperm Plastomes".JOURNAL OF MOLECULAR EVOLUTION 89.1-2(2021):73-80.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yu,Ying]'s Articles
[Li,Hong-Tao]'s Articles
[Wu,Yu-Huan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yu,Ying]'s Articles
[Li,Hong-Tao]'s Articles
[Wu,Yu-Huan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yu,Ying]'s Articles
[Li,Hong-Tao]'s Articles
[Wu,Yu-Huan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.