Journal
MITOCHONDRIAL DNA PART B-RESOURCES
Volume 6, Issue 8, Pages 2194-2197Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/23802359.2021.1944828
Keywords
Diatoms; chloroplast genome; Eucampia zodiacus
Categories
Funding
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB42000000]
- Chinese Academy of Sciences Pioneer Hundred Talents Program
- Taishan Scholar Project Special Fund
- Qingdao Innovation and Creation Plan [19-3-2-16-zhc]
- Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-DQC023]
- Major Scientific and Technological Innovation Project of Shandong Province [2019JZZY020706]
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This study constructed the complete chloroplast genome of the cosmopolitan phytoplankton species Eucampia zodiacus for the first time, revealing its close relationship with Cerataulina daemon and nearly identical gene order between the two species.
The cosmopolitan phytoplankton species Eucampia zodiacus Ehrenberg 1839 is a common harmful algal bloom (HAB) species with significant negative ecological impact. However, molecular information for this HAB species is limited. In this study, the complete chloroplast genome (cpDNA) of E. zodiacus was constructed for the first time. The circular genome was 118,107 bp in length, containing a pair of inverted repeats (IR) (6991 bp each). The overall GC content of E. zodiacus cpDNA was 31.64%. It encoded 169 genes, including 131 protein-coding genes (PCGs), 30 tRNA genes, one tmRNA gene, one ncRNA gene, and six rRNA genes in IR regions. Phylogenetic analysis using concatenated PCGs of 56 diatom cpDNAs strongly supported that E. zodiacus was closely related to Cerataulina daemon, which belongs to the same family Hemiaulaceae according to AlgaeBase. Syntenic analysis revealed nearly identical gene order between the two cpDNAs, except for an inversion in the small single-copy (SSC) region.
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