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园艺学报 ›› 2025, Vol. 52 ›› Issue (5): 1326-1340.doi: 10.16420/j.issn.0513-353x.2024-0880

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

乌塌菜叶绿体基因组特征及系统发育

汪雨龙1,*, 朱真希1,*, 张豪英1, 李雨1, 陈可嘉1, 汪承刚1,2, 侯金锋1,2, 陈国户1,2, 唐小燕1,2, 王文杰1,2, 吴建强1,2, 袁凌云1,2,**()   

  1. 1 安徽农业大学园艺学院,合肥 230036
    2 安徽省皖江蔬菜产业技术研究院,安徽马鞍山 238200
  • 收稿日期:2024-11-05 修回日期:2025-04-11 出版日期:2025-05-23 发布日期:2025-05-21
  • 通讯作者:
  • 作者简介:

    *共同第一作者

  • 基金资助:
    国家自然科学基金项目(32272703); 国家自然科学基金项目(32472735); 安徽省重点研究与开发计划项目(2023z04020005)

Characterisation and Phylogeny of the Chloroplast Genome of Wucai(Brassica campestir

WANG Yulong1, ZHU Zhenxi1, ZHANG Haoying1, LI Yu1, CHEN Kejia1, WANG Chenggang1,2, HOU Jinfeng1,2, CHEN Guohu1,2, TANG Xiaoyan1,2, WANG Wenjie1,2, WU Jianqiang1,2, YUAN Lingyun1,2,**()   

  1. 1 College of Horticulture,Anhui Agricultural University,Hefei 230036,China
    2 Auhui Wanjiang Vegetable Industrial Technology Institute,Maanshan,Auhui 238200,China
  • Received:2024-11-05 Revised:2025-04-11 Published:2025-05-23 Online:2025-05-21

摘要:

通过高通量测序技术和生物信息学方法,对乌塌菜(Brassica campestris L. ssp. chinensis var. rosularis Tsen)叶绿体基因组进行了组装和注释。结果显示,乌塌菜的叶绿体基因组为四分体环状结构,全长153 483 bp,包含大单拷贝区(LSC,83 282 bp)、小单拷贝区(SSC,17 775 bp)和反向重复区(IRs,26 213 bp)。乌塌菜叶绿体基因组注释共得到132个基因,包括87个蛋白编码基因、8个rRNA基因和37个tRNA基因,且密码子偏好性分析显示明显的A/U偏好。此外,乌塌菜叶绿体基因组中鉴定出28个重复结构和90个SSR变异位点,滑动窗口分析鉴定出6个高突变区域。系统发育分析显示,乌塌菜与芸薹属植物(大白菜、白菜、芥菜、甘蓝和欧洲油菜)位于同一分支,并与大白菜关系最为密切。

关键词: 乌塌菜, 叶绿体基因组, 序列特征, 密码子偏好, 系统发育

Abstract:

The chloroplast genome of Wucai(Brassica campestris L. ssp. chinensis var. rosularis Tsen)was assembled and annotated by high-throughput sequencing technology and bioinformatics methods. The results showed that the chloroplast genome of Wucai(Brassica campestris L. ssp. chinensis var. rosularis Tsen)was a tetrameric ring structure with a total length of 153 483 bp,containing a large single-copy region(LSC,83 282 bp),a small single-copy region(SSC,17 775 bp),and an inverted repeat region(IRs,26 213 bp). A total of 132 genes,including 87 protein-coding genes,8 rRNA genes and 37 tRNA genes,were obtained from the annotation of the Wucai chloroplast genome,and the codon preference analysis showed a clear A/U preference. In addition,28 repetitive structures and 90 SSR variant sites were identified in the Wucai chloroplast genome,and six highly mutated regions were identified by sliding window analysis. Phylogenetic analyses showed that Wucai was located in the same branch with BrassicaB. rapa subsp. pekinensisB. rapaB. junceaB. oleracea and B. napus)and was most closely related to B. pekinensis.

Key words: Wucai, chloroplast genome, sequence identity, codon preference, phylogeny