Synonymous codon usage pattern in model legume Medicago truncatula
Synonymous codon usage pattern presumably reflects gene expression optimization as a result of molecular evolution. Though much attention has been paid to various model organisms ranging from prokaryotes to eukaryotes, codon usage has yet been extensively investigated for model legume Medicago trunc...
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doaj-d9b0bb5d4a6f4ad7a49e0b44e2158ded2021-06-08T04:40:03ZengElsevierJournal of Integrative Agriculture2095-31192018-09-0117920742081Synonymous codon usage pattern in model legume Medicago truncatulaHui SONG0Jing LIU1Tao CHEN2Zhi-biao NAN3State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, P.R.China; Grassland Agri-husbandry Research Center, Qingdao Agricultural University, Qingdao 266109, P.R.China; Correspondence SONG HuiState Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, P.R.ChinaState Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, P.R.ChinaState Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, P.R.ChinaSynonymous codon usage pattern presumably reflects gene expression optimization as a result of molecular evolution. Though much attention has been paid to various model organisms ranging from prokaryotes to eukaryotes, codon usage has yet been extensively investigated for model legume Medicago truncatula. In present study, 39 531 available coding sequences (CDSs) from M. truncatula were examined for codon usage bias (CUB). Based on analyses including neutrality plots, effective number of codons plots, and correlations between optimal codons frequency and codon adaptation index, we conclude that natural selection is a major driving force in M. truncatula CUB. We have identified 30 optimal codons encoding 18 amino acids based on relative synonymous codon usage. These optimal codons characteristically end with A or T, except for AGG and TTG encoding arginine and leucine respectively. Optimal codon usage is positively correlated with the GC content at three nucleotide positions of codons and the GC content of CDSs. The abundance of expressed sequence tag is a proxy for gene expression intensity in the legume, but has no relatedness with either CDS length or GC content. Collectively, we unravel the synonymous codon usage pattern in M. truncatula, which may serve as the valuable information on genetic engineering of the model legume and forage crop.http://www.sciencedirect.com/science/article/pii/S2095311918619616codon usagegene expressionMedicago truncatulanatural selectionoptimal codon |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hui SONG Jing LIU Tao CHEN Zhi-biao NAN |
spellingShingle |
Hui SONG Jing LIU Tao CHEN Zhi-biao NAN Synonymous codon usage pattern in model legume Medicago truncatula Journal of Integrative Agriculture codon usage gene expression Medicago truncatula natural selection optimal codon |
author_facet |
Hui SONG Jing LIU Tao CHEN Zhi-biao NAN |
author_sort |
Hui SONG |
title |
Synonymous codon usage pattern in model legume Medicago truncatula |
title_short |
Synonymous codon usage pattern in model legume Medicago truncatula |
title_full |
Synonymous codon usage pattern in model legume Medicago truncatula |
title_fullStr |
Synonymous codon usage pattern in model legume Medicago truncatula |
title_full_unstemmed |
Synonymous codon usage pattern in model legume Medicago truncatula |
title_sort |
synonymous codon usage pattern in model legume medicago truncatula |
publisher |
Elsevier |
series |
Journal of Integrative Agriculture |
issn |
2095-3119 |
publishDate |
2018-09-01 |
description |
Synonymous codon usage pattern presumably reflects gene expression optimization as a result of molecular evolution. Though much attention has been paid to various model organisms ranging from prokaryotes to eukaryotes, codon usage has yet been extensively investigated for model legume Medicago truncatula. In present study, 39 531 available coding sequences (CDSs) from M. truncatula were examined for codon usage bias (CUB). Based on analyses including neutrality plots, effective number of codons plots, and correlations between optimal codons frequency and codon adaptation index, we conclude that natural selection is a major driving force in M. truncatula CUB. We have identified 30 optimal codons encoding 18 amino acids based on relative synonymous codon usage. These optimal codons characteristically end with A or T, except for AGG and TTG encoding arginine and leucine respectively. Optimal codon usage is positively correlated with the GC content at three nucleotide positions of codons and the GC content of CDSs. The abundance of expressed sequence tag is a proxy for gene expression intensity in the legume, but has no relatedness with either CDS length or GC content. Collectively, we unravel the synonymous codon usage pattern in M. truncatula, which may serve as the valuable information on genetic engineering of the model legume and forage crop. |
topic |
codon usage gene expression Medicago truncatula natural selection optimal codon |
url |
http://www.sciencedirect.com/science/article/pii/S2095311918619616 |
work_keys_str_mv |
AT huisong synonymouscodonusagepatterninmodellegumemedicagotruncatula AT jingliu synonymouscodonusagepatterninmodellegumemedicagotruncatula AT taochen synonymouscodonusagepatterninmodellegumemedicagotruncatula AT zhibiaonan synonymouscodonusagepatterninmodellegumemedicagotruncatula |
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