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

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

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 Online:2025-05-23 Published:2025-05-21
  • Contact: YUAN Lingyun

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