植物学报 ›› 2025, Vol. 60 ›› Issue (4): 573-585.DOI: 10.11983/CBB24146  cstr: 32102.14.CBB24146

• 研究论文 • 上一篇    下一篇

黑涩楠叶绿体全基因组的结构和比较分析及系统进化推断

王传永1, 庄典2, 宋正达1, 翟恒华1, 李乃伟1,*(), 张凡1,*()   

  1. 1江苏省中国科学院植物研究所(南京中山植物园), 江苏省植物资源研究与利用重点实验室, 南京 210014
    2南京中医药大学, 南京 210023
  • 收稿日期:2024-09-24 接受日期:2025-02-09 出版日期:2025-07-10 发布日期:2025-02-08
  • 通讯作者: *E-mail: linaiwei@jib.ac.cn;mumizhongfeng@126.com
  • 基金资助:
    新优植物品种引进及推广示范(FY2024013)

Structural and Comparative Analysis of the Complete Chloroplast Genome of the Aronia melanocarpa and Its Phylogenetic Inference

Chuanyong Wang1, Dian Zhuang2, Zhengda Song1, Henghua Zhai1, Naiwei Li1,*(), Fan Zhang1,*()   

  1. 1Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden Mem. Sun Yat-Sen, Nanjing 210014, China
    2Nanjing University of Chinese Medicine, Nanjing 210023, China

摘要: 黑涩楠(Aronia melanocarpa)因其观赏价值和经济价值而闻名, 但其与其它蔷薇科植物的系统进化关系仍不明确。该研究对黑涩楠叶绿体(cp)基因组进行测序, 并与13个蔷薇科物种的叶绿体基因组进行比较分析。结果表明, 黑涩楠的cp基因组大小为159 772 bp, 呈典型的四分结构; 其中大单拷贝区(LSC)长度为87 810 bp, 小单拷贝区(SSC)长度为19 200 bp, 中间含有2个26 381 bp的反向重复区(IRa和IRb)。共注释到132个基因, 包括87个蛋白质编码基因、37个tRNA和8个rRNA。还检测到76个简单重复序列(SSR)和50个长重复序列。系统进化分析表明, 黑涩楠与红涩楠(A. arbutifolia)的亲缘关系最近, 与榅桲(Cydonia oblonga)是姊妹支系。该研究提供的基因组信息将为后续的系统进化和种群遗传分析以及分子育种提供理论支持。

关键词: 黑涩楠, 叶绿体基因组, 结构变异, 系统进化关系

Abstract: INTRODUCTION Aronia melanocarpa also known as black chokeberry, belongs to the genus Aronia (Rosaceae). In addition to A. melanocarpa, Aronia includes A. arbutifolia or red chokeberry and A. prunifolia or purple chokeberry, both distributed naturally in North American, and an additional cultivated taxon, A. mitschurinii or Mitschurin’s chokeberry, originating from Europe. However, the species boundaries and relationships among the species of Aronia are not clear. Moreover, the taxonomic history of Aroniais complex, as species of this genus have formerly been placed in many different genera, such as Mespilus, Pyrus, Adenorachis, Sorbus, and Photinia. In the present study, we first sequenced and characterized the complete chloroplast (cp) genome of A. melanocarpa and compared its sequence with those of the cp genomes from 13 species of the family Rosaceae. The aims of this study were: (1) to increase our understanding of the structural patterns of complete cp genome of A. melanocarpa; (2) to investigate the phylogenetic relationships of A. melanocarpa with other Rosaceae species based on their cp genomes. RATIONALE The chloroplast is a unique and essential organelle in green plants with vital roles in photosynthesis and carbon fixation. Comparative analyses of cp genomes between different plant species reveal intra- and inter-species rearrangements that have occurred during evolution, such as inverted repeat (IR) contraction and expansion. Based on these characteristics, the cp genome has been wildly used for species identification, phylogenetic analysis, and exploring the genetic basis of environmental adaptation.RESULTS The complete A. melanocarpa cp genome was sequenced, analyzed, and compared with that from 13 other species in the Rosaceae. The cp genome is 159 772 bp and has a total guanine-cytosine (GC) content of 36.6%. It exhibits a typical quadripartite structure with four separate regions, including a large single copy (LSC) region of 87 810 bp and a small single copy (SSC) region of 19 200 bp separated by two inverted repeats (IRa and IRb) regions of 26 381 bp each. A total of 132 genes were annotated, including 87 protein-coding genes, 37 tRNAs, and eight rRNAs, with 22 duplicates in the IR regions. In total, 76 simple sequence repeats (SSRs) and 50 long repeats were detected. Phylogenetic analysis indicated that A. melanocarpa is most closely related to A. arbutifolia and forms a sister clade to Cydonia oblonga with weak support.CONCLUSION We analyzed the complete cp genome of A. melanocarpa by using Illumina high-throughput sequencing technology. The sequence of A. melanocarpa cp genome could be further used for the development of molecular markers. Highly variable regions were detected in intergenic regions, such as trnK-rps16, rps16-trnQ, trnG-atpA, petN-psbM, trnT-psbD, psbZ-trnG, trnT-trnL, ndhC-trnV and accD-psaI, which might be useful for broad applications in genetic research studies as well as phylogenetic studies. Phylogenetic construction results strongly supported that A. melanocarpa was closest related to A. arbutifolia, followed by C. oblonga with weak support. This newly available genomic data for A. melanocarpa will provide a basis for future research on the population genetics and phylogenomics and will benefit the breeding studies and utilization of the genus Aronia.
Map of the chloroplast genome of Aronia melanocarpa and phylogenetic analyses among the 60 Rosaceae species using their complete chloroplast genomes. Aronia formed a clade with Dichotomanthes and Pourthiaea based on cpDNA tree. Moreover, A. melanocarpa is most closely related to A. arbutifolia and forms a sister clade to Cydonia oblonga with weak support.

Key words: Aronia melanocarpa, chloroplast genome, structural variation, phylogenetic relationships