Characterization of chloroplast genome of the marine diatom Chaetoceros gracilis

文献类型： 外文期刊

第一作者： Li, Yajun

作者： Li, Yajun;Zhang, Xiuxia;Zeng, Ru;Deng, Xiaodong

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关键词： Chaetoceros gracilis; chloroplast genome; phylogenetic analysis; diatom

期刊名称：MITOCHONDRIAL DNA PART B-RESOURCES （ 影响因子：0.658； 五年影响因子：0.674 ）

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年卷期： 2021 年 6 卷 11 期

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收录情况： SCI

摘要： In the present study, the chloroplast genome of Chaetoceros gracilis was sequenced using the PacBio sequencing platform and phylogenetic analysis was conducted using 38 other complete chloroplast genomes of the Bacillariophyta. The chloroplast genome of C. gracilis was 116,421 bp in length with the typical quadripartite structure, including a large single copy (LSC) region of 61,904 bp, a small single copy (SSC) region of 39,367 bp, and a pair of inverted repeats (IR) regions of 7575 bp. The overall GC content of C. gracilis chloroplast genome was 30.79%. This genome encoded 131 genes incuding 93 protein-coding genes, 30 transfer RNA (tRNA) genes and 8 ribosomal RNA (rRNA) genes. Phylogenetic results exhibited that three Chaetoceros species were clustered together. Chaetoceros gracilis was closely related with Chaetoceros muelleri, and then formed a clade with Chaetoceros simplex with 100% bootstrap value This study will facilitate species identification and study of evolutionary in the family Chaetoceroceae.

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