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植物研究 ›› 2023, Vol. 43 ›› Issue (1): 120-130.doi: 10.7525/j.issn.1673-5102.2023.01.013

• 分子生物学 • 上一篇    下一篇

辽东丁香完整叶绿体基因组的结构与特征

芦永昌1,2, 张鑫1,2, 张璐燕1,3, 王久利1()   

  1. 1.青海省青藏高原植物化学重点实验室,西宁 810007
    2.青海省藏药创制工程技术研究中心,西宁 810007
    3.辽宁大学生命科学学院,沈阳 110036
  • 收稿日期:2022-06-17 出版日期:2023-01-20 发布日期:2022-12-23
  • 通讯作者: 王久利 E-mail:wang_jiul@163.com
  • 作者简介:芦永昌(1965—),男,硕士,教授,主要从事藏药质量控制的研究。
  • 基金资助:
    青海省科技成果转化专项项目(2020-NK-171);青海民族大学高层次人才项目(2021XJG17);青海省“高端创新人才千人计划”

Complete Chloroplast Genome Structure and Characterization of Syringa villosa subsp. wolfii

Yongchang LU1,2, Xin ZHANG1,2, Luyan ZHANG1,3, Jiuli WANG1()   

  1. 1.Key Laboratory of Plant Resources of Qinghai-Tibet Planteauin Chemical Research,Xining 810007
    2.Qinghai Tibetan-medicine Creation Engineering Technology Research Center,Xining 810007
    3.School of Life Sciences,Liaoning University,Shenyang 110036
  • Received:2022-06-17 Online:2023-01-20 Published:2022-12-23
  • Contact: Jiuli WANG E-mail:wang_jiul@163.com
  • About author:LU Yongchang(1965—),male,master,professor,major in Tibetan medicine quality control.
  • Supported by:
    Scientific and technological Achievements Transformation Project of Qinghai Province(2020-NK-171);High-level Talent Program of Qinghai Minzu University(2021XJG17);Thousand High-end Innovative Talents Plan of Qinghai Province

摘要:

为获得辽东丁香(Syringa villosa subsp. wolfii)叶绿体全基因组的基本特征,采用高通量测序技术分析了其叶绿体基因组序列信息,并讨论其系统演化位置。结果表明:(1)辽东丁香叶绿体基因组全长156 517 bp,具有典型的四分体结构;具有131个功能基因,包括36个tRNA基因、8个rRNA基因和87个蛋白质编码基因。(2)该叶绿体基因组蛋白编码区的总密码子偏好性(RSCU)分析显示,RSCU值>1的密码子有31个,其中以A/U碱基结尾的有21个;RSCU值<1的密码子有34个,其中以G/C碱基结尾的密码子有22个。(3)在辽东丁香的叶绿体基因组中,检测出334个散在重复序列,包括170个正向重复序列和164个回文重复序列;检测到227个SSR位点,其中226个位点成功设计出PCR引物。(4)最大似然法构建系统进化树分析显示,辽东丁香与云南丁香 (S. yunnanensis)亲缘关系最近。本研究通过对辽东丁香叶绿体基因组重复序列、IR边界、系统发育等进行分析,为辽东丁香后续的分子标记开发、系统发育分析、物种资源鉴定评价、DNA条形码开发等提供参考。

关键词: 辽东丁香, 叶绿体基因组, 密码子偏好性, 重复序列, 系统发育

Abstract:

To clarify the basic characteristics of the complete chloroplast genome of Syringa villosa subsp. wolfii, the sequence information of chloroplast genome was analyzed by high-throughput sequencing technology, and its systematic evolution position was discussed. The results showed that:(1)The total length of the S. villosa subsp. wolfii chloroplast genome was 156 517 bp, which had a typical tetrad structure and had 131 functional genes, including 36 tRNA genes, 8 rRNA genes and 87 protein-coding genes respectively. (2)The relative synonymous codon usage(RSCU) analysis of the protein-coding region of the chloroplast genome showed that there were 31 codons with RSCU>1, of which 21 ended with A/U base; and there were 34 codons with RSCU<1, including 22 codons ending with G/C base. (3)In the chloroplast genome of S. villosa subsp. wolfii, 334 scattered repeats were detected, including 170 forward repeats and 164 palindromic repeats, and 227 SSR loci were discovered, and PCR primers were designed successfully for 226 of these loci. (4)Phylogenetic tree analysis based on the maximum likelihood method showed that S. villosa subsp. wolfii was the most closely to the S. yunnanensis. In this study, repeated sequences, IR boundaries and phylogeny of chloroplast genome of S. villosa subsp. wolfii were analyzed to provide reference data for molecular markers, phylogenetic classification, species identification and evaluation and DNA barcode development.

Key words: Syringa villosa subsp. wolfii, chloroplast genome, RSCU, sequence repeats, phylogeny

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