Organelle genome evolution in the early‐diverging brown algal lineage, Ishigeales
Hayeon Hwang, Hocheol Kim, Seok‐Wan Choi, Hiroshi Kawai, Hwan Su Yoon · 2026
Read Organelle genome evolution in the early‐diverging brown algal lineage, Ishigeales by Hayeon Hwang, Hocheol Kim, Seok‐Wan Choi, Hiroshi Kawai, Hwan Su Yoon (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13280774.txt.
Description
Hayeon Hwang and colleagues published a 2026 genomics study of organelle evolution in Ishigeales, an early-diverging order of brown algae whose members range from filaments to leafy forms. Only one species in the order had organelle genomes available, limiting inference. The team assembled the chloroplast and mitochondrial genomes of four species, from the filamentous Pilinia rimosa to two leafy Ishige species. They rebuilt the group's family tree with two approaches.
The trees agreed that evolution ran from simple ancestors toward the complex Ishige body plans, though one placement conflicted between analyses, hinting at a tangled history. Both showed rearrangement. Two species carried expanded mitochondrial genomes, and one had duplicated a respiratory gene. The authors attribute the growth to spreading tandem repeats now decaying. Several chloroplast genes evolved fast between the sister Ishige species, including a gene family tied to their differing shapes.
Catalog record
| CREATOR | Hayeon Hwang, Hocheol Kim, Seok‐Wan Choi, Hiroshi Kawai, Hwan Su Yoon |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 58 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |