Comparative genomics and phylogenetic analysis of six Malvaceae species based on chloroplast genomes

文献类型： 外文期刊

第一作者： Zhong, Yiwang

作者： Zhong, Yiwang;Bai, Beibei;Sun, Yangyang;Wen, Ke;Feng, Xuejie;Zhong, Yiwang;Sun, Yangyang;Qiao, Yang;Guo, Lijun;Deng, Huidong;Ye, Yingjun;Feng, Xuejie;Wen, Ke;Guo, Lijun;Deng, Huidong;Qiao, Yang;Ye, Yingjun;Feng, Liying

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关键词： Chloroplast genome; Malvaceae; Sequence characteristic; Comparative analysis; Phylogeny

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.8； 五年影响因子：5.4 ）

ISSN： 1471-2229

年卷期： 2024 年 24 卷 1 期

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收录情况： SCI

摘要： The Malvaceae family, comprising 9 subfamilies and 4,225 species, includes economically significant taxa, such as Ceiba pentandra, Gossypium ekmanianum, Gossypium stephensii, Kokia drynarioides, Talipariti hamabo, and Durio zibethinus. Chloroplast (cp) genome research is crucial for elucidating the evolutionary divergence and species identification within this family. In this study, we assembled and annotated cp genomes of six Malvaceae species, conducting comprehensive comparative genomic and phylogenomic analyses. The assembled genomes range from 160,495 to 163,970 bp in size, with 125-129 genes annotated. Notable differences were observed in the IR (inverted repeat) regions, and SSR analysis revealed that Durio zibethinus has the highest number of specific variation sites. Among the six species, Talipariti hamabo uniquely exhibits more palindromic repeats than forward repeats. Seven highly mutated regions were identified, offering potential markers for species identification. Phylogenetic reconstruction using the maximum likelihood method revealed two primary clades within Malvaceae: Byttneriina and Malvadendrina. Within Malvadendrina, the subfamily Helicteroideae represents the earliest divergence, followed by Sterculioideae. This study provides a robust phylogenetic framework and valuable insights into the classification and evolutionary history of Malvaceae species.

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