ArticleISME communications2024
Biomolecular profiles of Arctic sea-ice diatoms highlight the role of under-ice light in cellular energy allocation.
Article in ISME communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Climate change impacts on ocean light in Arctic ecosystems.Nature communications · 2025Article
- Ice gliding diatoms establish record-low temperature limits for motility in a eukaryotic cell.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Seasonal environmental transitions and metabolic plasticity in a sea-ice alga from an individual cell perspective.Scientific reports · 2024Article
- Temperature Stress Resilience in Polar Chlamydomonas Is Regulated by Acclimation to Light and Salinity: Implications for Survival in a Changing World.Physiologia plantarumArticle
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Arctic sea-ice diatoms fuel polar marine food webs as they emerge from winter darkness into spring. Through their photosynthetic activity they manufacture the nutrients and energy that underpin secondary production. Sea-ice diatom abundance and biomolecular composition vary in space and time. With climate change causing short-term extremes and long-term shifts in environmental conditions, understanding how and in what way diatoms adjust biomolecular stores with environmental perturbation is important to gain insight into future ecosystem energy production and nutrient transfer. Using synchrotron-based Fourier transform infrared microspectroscopy, we examined the biomolecular composition of five dominant sea-ice diatom taxa from landfast ice communities covering a range of under-ice light conditions during spring, in Svalbard, Norway. In all five taxa, we saw a doubling of lipid and fatty acid content when light transmitted to the ice-water interface was >5% but <15% (85%-95% attenuation through snow and ice). We determined a threshold around 15% light transmittance after which biomolecular synthesis plateaued, likely because of photoinhibitory effects, except for
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