文献类型： 外文期刊

作者： Andargie, Mebeaselassie ¹ ; Zhu Congyi ² ;

作者机构： 1.Univ Goettingen, Mol Phytopathol & Mycotoxin Res, Grisebach Str 6, D-37077 Gottingen, Germany

2.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangdong Prov Key Lab Trop & Subtrop Fruit Tree, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangzhou, Peoples R China

关键词： Codon usage bias; Natural selection; Optimal codon; Sesamum indicum

期刊名称：HELIYON （ 影响因子：3.776； 五年影响因子：3.752 ）

ISSN：

年卷期： 2022 年 8 卷 1 期

页码：

收录情况： SCI

摘要： Sesamum indicum is an ancient oil crop grown in tropical and subtropical areas of the world. We have analyzed 23,538 coding sequences (CDS) of S. indicum to understand the factors shaping codon usage in this important oil crop plant. We identified eleven highly preferred codons in S. indicum that have AT-endings. The slope of a neutrality plot was less than one while effective number of codons (ENC) plot showed distribution above and below the standard curve. There is a significant relationship between protein length and relative synonymous codon usage (RSCU) at the primary axis while there is a weak correlation between protein length and Nc values. Correspondence analysis conducted on RSCU values differentiated CDS based on their GC content and their characteristic feature and showed a discrete distribution. Moreover, by determining codon usage, we found out that majority of the lignan biosynthesis related genes showed a weaker codon usage bias. These results provide insights into understanding codon evolution in sesame.