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Pole-to-pole LOV-domain receptor diversity points to an early stramenopile origin and global dominance of aureochromes.
Communications Biology · · Journal Article · Open access
Misir, Kroth + 1 more
Abstract ↗AI summary
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Aureochrome LOV-domain receptors are the most frequent blue-light-sensing proteins across ocean latitudes, with their domain architecture conserved despite polar light changes.
- Why it matters: Polar oceans have extreme seasonality, but how photoreceptor molecular adaptations track latitude remains unclear, limiting understanding of spectral-light sensing in these regions.
- What they did: The study surveyed candidate LOV-domain proteins across ocean latitudes, identified aureochromes as the most common receptors, and used phylogenetic reconstruction to infer early diversification in stramenopiles.
- The result: Aureochrome diversification is linked to a heterotrophic stramenopile ancestor before photosynthesis, and conserved diatom aureochrome domain architecture suggests latitude adaptation via regulatory tuning rather than structural change.
The findingWhy it mattersWhat they didThe result
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