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"红阳"猕猴桃叶绿体基因组密码子使用偏性分析

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为了解中华猕猴桃优良品种"红阳"猕猴桃的叶绿体基因组密码子的偏好性,利用Codon W和在线CUSP软件对"红阳"猕猴桃叶绿体基因组中的51条编码序列的密码子进行中性绘图、ENC-plot和PR2-plot分析。结果表明:"红阳"猕猴桃密码子不同位置上的GC碱基含量有明显差异,即 GC1>GC2>GC3,表明该植物密码子偏好以A/U结尾;ENC值为35。70~56。79,表明该品种的猕猴桃叶绿体基因组密码子使用偏性整体较弱。综合分析表明,"红阳"猕猴桃叶绿体密码子偏性主要受自然选择的影响。最终筛选出17个密码子为最优密码子,这些密码子均以A/U结尾。
Codon Usage Bias of Chloroplast Genome in Actinidia chinensis'Hongyang'
To comprehend the preference of codons in the chloroplast genome of Actinidia chinensis'Hongyang',51 coding Sequences(CDS)of A.chinensis'Hongyang'were analyzed to obtain to the results of Neutrality plot,ENC-plot and PR2-plot using Codon W and online software CUSP.The results showed that the GC content varied at different positions of the codons in the chloroplast genome of A.chinensis'Hongyang':Namely:GC(>GC2>GC3,indicating that the third base of codons preferred to end with A/U.The ENC value ranges from 35.70 to 56.79,indicating that codon usage bias in the chloroplast genome of A.chinensis'Hongyang'was generally weak.Neutrality plot,ENC plot and PR2 plot indicate that natural se-lection was the major factors on codon usage patterns in the chloroplast genome of A.chinensis'Hongyang'.In addition,17 codons were selected as the optimal codons and all of them ends with A/U.

Actinidia chinensis'Hongyang'chloroplastgenomecodon usage bias

罗秦欢、段炼、赵月梅

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贵州师范学院生物科学学院,贵州贵阳 550018

"红阳"猕猴桃 叶绿体 基因组 密码子偏性

2024

西南林业大学学报
西南林业大学

西南林业大学学报

CSTPCD北大核心
影响因子:0.773
ISSN:2095-1914
年,卷(期):2024.44(11)