The Mitogenome of the Subarctic Octocoral

We sequenced and analyzed the complete mitogenome of a Norwegian isolate of the octocoral Alcyonium digitatum using the Ion Torrent sequencing technology. The 18,790 bp circular mitochondrial genome was found to harbor the same set of 17 genes, which encode 14 protein subunits, two structural riboso...

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Bibliographic Details
Published in:Current Issues in Molecular Biology
Main Authors: Heuchel, Alisa, Emblem, Åse, Jørgensen, Tor Erik, Moum, Truls, Johansen, Steinar Daae
Format: Article in Journal/Newspaper
Language:English
Published: MDPI 2024
Subjects:
Alcyoniidae
dual coding
mitochondrial genome
octocoral
phylogeny
tRNA
Subarctic
Online Access:https://doi.org/10.3390/cimb46080479
https://pubmed.ncbi.nlm.nih.gov/39194696
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11353228/
Description
Summary:We sequenced and analyzed the complete mitogenome of a Norwegian isolate of the octocoral Alcyonium digitatum using the Ion Torrent sequencing technology. The 18,790 bp circular mitochondrial genome was found to harbor the same set of 17 genes, which encode 14 protein subunits, two structural ribosomal RNAs and one tRNA, as reported in other octocorals. In addition, we detected a new tRNAPro-like gene sequence nested within the MutS protein coding region. This putative tRNA gene feature appears to be conserved among the octocorals but has not been reported previously. The A. digitatum mitogenome was also shown to harbor an optional gene (ORFA) that encodes a putative protein of 191 amino acids with unknown function. A mitogenome-based phylogenetic analysis, presented as a maximum likelihood tree, showed that A. digitatum clustered with high statistical confidence with two other Alcyonium species endemic to the Mediterranean Sea and the Southeast Pacific Ocean.

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