中国农业科技导报 ›› 2022, Vol. 24 ›› Issue (8): 74-86.DOI: 10.13304/j.nykjdb.2022.0114

• 生物技术 生命科学 • 上一篇    下一篇

老班瑶药牛耳风叶绿体基因组特征及其密码子使用偏好性分析

严其伟1,2(), 梁湘兰1, 陶秋云3, 罗秋香4, 郭松1,2()   

  1. 1.广西科技师范学院食品与生化工程学院,广西 来宾 546199
    2.广西科技师范学院壮瑶药品质生物学重点实验室,广西 来宾 546199
    3.金秀瑶族自治县国有金秀林场,广西 来宾 545799
    4.金秀瑶族自治县瑶医医院,广西 来宾 545799
  • 收稿日期:2022-02-20 接受日期:2022-04-12 出版日期:2022-08-15 发布日期:2022-08-22
  • 通讯作者: 郭松
  • 作者简介:严其伟 E-mail: 1285207885@qq.com
  • 基金资助:
    广西科技师范学院高层次人才启动经费项目(GXKS2020GKY009);广西高校中青年教师科研基础能力提升项目(2021KY0862);广西科技师范学院壮瑶药品质生物学重点实验室项目(GXKSKYPT2021007)

Analysis of Chloroplast Genome Characteristics and Codon Usage Bias of Fissisfigma polyanthum Merr.

Qiwei YAN1,2(), Xianglan LIANG1, Qiuyun TAO3, Qiuxiang LUO4, Song GUO1,2()   

  1. 1.College of Food and Biochemical Engineering, Guangxi Science & Technology Normal University, Guangxi Laibin 546119, China
    2.Key Lab for Zhuang and Yao Pharmaceutical Quality Biology, Guangxi Science & Technology Normal University, Guangxi Laibin 546199, China
    3.JinxiuYao Autonmous County State Owned Jinxiu Forert Form, Guangxi Laibin 545799, China
    4.Yao Medical Hospital of Jinxiu Yao Autonomous County, Guangxi Laibin 545799, China
  • Received:2022-02-20 Accepted:2022-04-12 Online:2022-08-15 Published:2022-08-22
  • Contact: Song GUO

摘要:

为探究老班瑶药牛耳风叶绿体基因组的结构特征、系统进化以及密码子偏好性,以瑶药牛耳风为研究材料,对其叶绿体基因组进行测序和组装。结果表明,牛耳风叶绿体基因组由大单拷贝区、小单拷贝区以及1对反向重复区组成,全长189 920 bp,包含118个基因,其中99个编码蛋白质的基因,11个tRNA基因,8个核糖体rRNA基因;共检测到71个简单序列重复(simple sequence repeat, SSR)位点。系统进化分析表明牛耳风与番荔枝属的刺果番荔枝(Annona muricata)亲缘关系最近。密码子偏好性分析表明,牛耳风的密码子偏好性较弱,且密码子偏好性主要受选择因素的影响,最终选出11个最优密码子,其中10个以A/U结尾,为瑶药牛耳风的系统进化研究等提供科学依据。

关键词: 牛耳风, 叶绿体基因组, 特征, 密码子偏好性

Abstract:

To study the structure characteristics, phylogeny and codon usage bias ofchloroplast genome in Fissisfigma polyanthum Merr., the chloroplast genome of Fissisfigma polyanthum Merr. wassequenced and analyzed. The results showed that the chloroplast genome was composed of large single-copy region, small single-copy region and a pair of reverse repeat regions. The total length was 189 920 bp, which included 118 genes (99 genes encoding protein, 11 tRNA genes and 8 ribosome rRNA genes), and 71 simple sequence repeats (SSRs) were also identified. The phylogenetic analysis showed that F. polyanthum Merr. was closely related to Annona muricata. The codon preference analysis showed that the codon usage bias of F. polyanthum Merr. was weak, and the codon preference was mainly affected by selection factor. Finally, 11 optimal codes were selected, 10 of which ended with A/U. These results provided scientific basis for phylogeny and construction of expression vector of F. polyanthum Merr.

Key words: Fissisfigma polyanthum Merr., chloroplast genome, characteristics, codon usage bias

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