Unveiling the chloroplast genomes of Capsella bursa-pastoris, Descurainia sophia, and Lepidium apetalum (Brassicaceae)

Pub Date : 2024-03-15 DOI:10.1016/j.japb.2024.01.010

Hui Li , Qi Zheng , Yu Wang , Abdullah , Xiaoxuan Tian

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Abstract

We de novo assembled and analysed the chloroplast genomes of Capsella bursa-pastoris, Descurainia sophia, and Lepidium apetalum of the plant family Brassicaceae. These chloroplast genomes exhibited a quadripartite structure characterised by inverted repeat regions (26,268–26,460 bp) separating large single copy (83,771–83,870 bp) and small single copy (17,570–18,014 bp) regions. Genetic analysis revealed 112 unique genes, comprising 78 protein-coding genes, 30 transfer RNA (tRNA) genes, and 4 ribosomal RNA (rRNA) genes. Notably, phylogenetic analysis of 21 species revealed close relationships between C. bursa-pastoris and C. orientalis, D. sophia and D. erodiifolia, and L. apetalum and L. cordatum, with 100% bootstrap support. In conclusion, the analysis of these genomes will contribute to the growing knowledge of chloroplast genomes in the Brassicaceae family and of the specific genera Capsella, Descurainia, and Lepidium.

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揭示芸薹属植物囊果、莴苣和芹菜的叶绿体基因组

我们重新组装并分析了十字花科（Brassicaceae）植物囊壳菌（Capsella bursa-pastoris）、苣苔（Descurainia sophia）和芹菜（Lepidium apetalum）的叶绿体基因组。这些叶绿体基因组呈现四方结构，其特点是倒置重复区（26,268-26,460 bp）将大的单拷贝区（83,771-83,870 bp）和小的单拷贝区（17,570-18,014 bp）分开。遗传分析发现了 112 个独特基因，包括 78 个蛋白质编码基因、30 个转运核糖核酸（tRNA）基因和 4 个核糖体核糖核酸（rRNA）基因。值得注意的是，21 个物种的系统进化分析表明，法氏囊和东方囊、D. sophia 和 D. erodiifolia 以及 L. apetalum 和 L. cordatum 之间的关系密切，引导支持率达 100%。总之，对这些基因组的分析将有助于加深人们对十字花科叶绿体基因组以及辣椒属、莴苣属和莴苣属叶绿体基因组的了解。

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