4.3 Article

Mitochondrial genome and phylogenomic analysis of Pseudo-nitzschia micropora (Bacillariophyceae, Bacillariophyta)

Journal

MITOCHONDRIAL DNA PART B-RESOURCES
Volume 6, Issue 7, Pages 2035-2037

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/23802359.2021.1923426

Keywords

Mitochondrial genome; phylogenetic analysis; Pseudo-nitzschia micropora

Funding

  1. Chinese Academy of Sciences [XDB42000000]
  2. Pioneer Hundred Talents Program
  3. Taishan Scholar Project Special Fund
  4. Qingdao Innovation and Creation Plan (Talent Development Program-5th Annual Pioneer and Innovator Leadership Award) [19-3-2-16-zhc]
  5. Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-DQC023]
  6. Major Scientific and Technological Innovation Project of Shandong Province [2019JZZY020706]

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The study determined the complete mitochondrial genome sequence of Pseudo-nitzschia micropora for the first time, providing valuable information for researching the evolutionary relationships of Pseudo-nitzschia species.
The number of species in the genus Pseudo-nitzschia has increased to 56, including 26 species known to produce domoic acid (DA), which is harmful to marine animals and human health. The lack of genomic sequences of Pseudo-nitzschia species has been a limiting factor in the studies of genetic and evolutionary relationships of Pseudo-nitzschia species. Here, the complete mitochondrial genome sequence of Pseudo-nitzschia micropora was determined for the first time, which was 38,792 bp in length with the overall AT content being 69.98%. The mitochondrial genome encoded 62 genes, including 36 protein-coding genes (PCGs, including orf157), 24 transfer RNA (tRNA) genes and two ribosomal RNA (rRNA) genes. Phylogenetic tree analysis suggests that the P. micropora had a closer relationship with P. cuspidate than that with P. multiseries. The availability of the complete mitochondrial genome of P. micropora would be useful for researching the evolutionary relationships of Pseudo-nitzschia species.

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