Characterization of chloroplast genome of the marine diatom Chaetoceros gracilis

Mitochondrial DNA Part B

Ru Zeng¹  Xiuxia Zhang¹  Xiaodong Deng¹  Yajun Li¹ 

[1] Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Bioscience and Biotechnology, Hainan Academy of Tropical Agricultural Resource, Chinese Academy of Tropical Agricultural Sciences, Haikou, P. R. Chin;

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

DOI  :  10.1080/23802359.2021.1987171

来源: Taylor & Francis

【 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.

【 授权许可】

CC BY