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March 5, 2026SHILAP Revista de lepidopterología0 citationsOpen Access

The complete mitochondrial genome of Dunaliella salina CS-265: insights into gene content and phylogenetic placement

ALA. K. LisaGopalganj Science and Technology University WRW. G. ReeveCurtin University DLD. W. LairdMurdoch University

Key Points

The aim is to explore the complete mitochondrial genome of Dunaliella salina CS-265 and its evolutionary implications.
Isolated mitochondrial genome sequencing from the halotolerant green alga.
Characterization of the gene content and structure within the mitochondrial DNA.
Phylogenetic analyses to assess evolutionary relationships.
The mitochondrial genome consists of 30,073 base pairs.
It encodes seven protein-coding genes, nine rRNAs, and three tRNAs.
Identified fragmented introns within four core genes, indicating evolutionary changes.
Noted absence of ATP synthase subunits, reflecting ongoing reductive evolution.

Abstract

We report the complete mitochondrial genome of the halotolerant green alga Dunaliella salina CS-265, isolated from a hypersaline lake in central Australia. The genome is a circular DNA molecule of 30,073 bp, encoding seven protein-coding genes, nine rRNAs, and three tRNAs. Four core genes (cox1, cob, nad1, and nad5) are fragmented by multiple introns, whereas others remain intact. The absence of ATP synthase subunits and ribosomal protein genes reflects ongoing reductive evolution in Dunaliella mitochondria. This genome adds a new organellar resource from an Australian isolate, complementing previous studies and providing further insight into mitochondrial genome dynamics in halotolerant green algae.

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Lisa et al. (2026) studied this question.

synapsesocial.com/papers/69a91da8d6127c7a504c0ad5 https://doi.org/https://doi.org/10.1080/23802359.2026.2635789

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