华北农学报 ›› 2026, Vol. 41 ›› Issue (3): 48-56. doi: 10.7668/hbnxb.20195785

所属专题: 生物技术 蔬菜专题

• 作物遗传育种•种质资源•生物技术 • 上一篇    下一篇

黑籽南瓜的叶绿体基因组特征及系统发育分析

康家香1, 彭聪归1, 昂海燕1, 荆赞革1, 杨正安2, 谢秀锋1, 汪雨欣1, 裴徐梨1   

  1. 1 昆明学院 农学与生命科学学院, 云南 昆明 650214
    2 云南农业大学 园林园艺学院, 云南 昆明 650201
  • 收稿日期:2025-07-16 出版日期:2026-06-28
  • 通讯作者:
    裴徐梨(1990-),女,云南个旧人,副研究员,博士,主要从事蔬菜分子生物学研究。
  • 作者简介:
    康家香(1999-),女,云南昭通人,在读硕士,主要从事植物资源利用研究。
  • 基金资助:
    国家自然科学基金项目(K1400245000); 云南省张小兰专家工作站(202205AF50021)

Chloroplast Genome Characteristics and Phylogenetic Analysis of Cucurbita ficifolia

KANG Jiaxiang1, PENG Conggui1, ANG Haiyan1, JING Zange1, YANG Zhengan2, XIE Xiufeng1, WANG Yuxin1, PEI Xuli1   

  1. 1 School of Agriculture and Life Sciences, Kunming University, Kunming 650214, China
    2 College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, China
  • Received:2025-07-16 Published:2026-06-28

摘要:

为揭示黑籽南瓜与其他葫芦科植物的系统进化关系,对黑籽南瓜叶绿体基因组进行组装、注释和分析。使用Illumina NovaSeq 6000平台对黑籽南瓜进行测序,并对其序列特征、基因类型、基因重复序列、密码子偏好性及物种进化等进行了分析。黑籽南瓜的叶绿体基因组全长是157 631 bp,GC含量为37.15%;注释到60.99%蛋白质编码基因、33.33% tRNA基因以及5.67% rRNA基因,共141个基因,分为光合作用基因、自我复制基因、其他基因和未知功能基因4类。对黑籽南瓜叶绿体进行简单重复序列分析,共检测到SSR位点192个。密码子偏好性分析发现,RSCU值大于1.00的密码子共有31个,以A或U结尾的密码子有29个。黑籽南瓜与其他8个葫芦科物种的边界基因存在差异,扩张和收缩现象在IR区和LSC区明显存在。进化分析结果表明,黑籽南瓜与中国南瓜、印度南瓜、西葫芦、墨西哥南瓜、臭瓜、阿克丘宾南瓜、伦德尔南瓜属于同一分支,与葫芦科的其他物种亲缘关系较远。组装完成了黑籽南瓜的叶绿体基因组,注释到141个基因,检测到192个SSR位点,进化上与所选葫芦科物种亲缘关系较远,为黑籽南瓜系统进化和分子育种提供理论依据。

关键词: 黑籽南瓜, 叶绿体基因组, 结构特征, 系统进化

Abstract:

The chloroplast genome of Cucurbita ficifolia was assembled,annotated and analyzed to reveal the phylogenetic relationship between C.ficifolia and other Cucurbitaceae plants.The Illumina NovaSeq 6000 platform was used to sequence C.ficifolia,and its sequence characteristics,gene type,gene repeat sequence,codon preference and species evolution were analyzed.The chloroplast genome of C.ficifolia was 157 631 bp in length with a GC content of 37.15%.A total of 141 genes were annotated,comprising 60.99% protein-coding genes,33.33% tRNA genes,and 5.67% rRNA genes.These genes were categorized into four groups:photosynthesis-related genes,self-replication genes,other genes,and genes of unknown function.Simple sequence repeat analysis was performed on the chloroplasts of C.ficifolia,and a total of 192 SSR loci were detected.Codon preference analysis showed that there were 31 codons with RSCU values greater than 1.00,and 29 codons ended with A or U.The boundary genes of C.ficifolia were different from those of 8 other Cucurbitaceae species,and the expansion and contraction phenomena were obvious in the IR region and LSC region.The results of evolutionary analysis showed that C.ficifolia was in the same branch with C.moschata,C.maxima,C.pepo,C.argyrosperma var. palmeri,C.foetidissima,C.okeechobeensis subsp. martinezii and C.lundelliana.C.ficifolia was distant in relationship with other species of Cucurbitaceae.The chloroplast genome of C.ficifolia was assembled,and annotated with 141 genes and 192 SSR loci.Its evolutionary relationship is relatively distant with the selected Cucurbitaceae species.This study provides a theoretical basis for phyletic evolution and molecular breeding strategies in C.ficifolia.

Key words: Cucurbita ficifolia, Chloroplast genome, Structural characteristics, Phyletic evolution

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引用本文

康家香, 彭聪归, 昂海燕, 荆赞革, 杨正安, 谢秀锋, 汪雨欣, 裴徐梨. 黑籽南瓜的叶绿体基因组特征及系统发育分析[J]. 华北农学报, 2026, 41(3): 48-56. doi: 10.7668/hbnxb.20195785.

KANG Jiaxiang, PENG Conggui, ANG Haiyan, JING Zange, YANG Zhengan, XIE Xiufeng, WANG Yuxin, PEI Xuli. Chloroplast Genome Characteristics and Phylogenetic Analysis of Cucurbita ficifolia[J]. Acta Agriculturae Boreali-Sinica, 2026, 41(3): 48-56. doi: 10.7668/hbnxb.20195785.