ArticleProceedings of the National Academy of Sciences of the United States of America2019
Photosynthetic adaptation to low iron, light, and temperature in Southern Ocean phytoplankton.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed, 132 citations in OpenAlex.
- Chloroplast-mitochondria synergy modulates responses to iron limitation in twoISME communications · 2026Article
- The Evolution of Southern Ocean Net Primary Production in a Changing Climate: Challenges and Opportunities.Global change biology · 2025Article
- Proton-pumping rhodopsins promote the growth and survival of phytoplankton in a highly variable ocean.The ISME journal · 2024Article
- Declines in ice cover are accompanied by light limitation responses and community change in freshwater diatoms.The ISME journal · 2024Article
- Widespread use of proton-pumping rhodopsin in Antarctic phytoplankton.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Chasing iron bioavailability in the Southern Ocean: Insights fromScience advances · 2023Article
- Process controlling iron-manganese regulation of the Southern Ocean biological carbon pump.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2023Article
- The Molecular Mechanism ofPlants (Basel, Switzerland) · 2023Article
- Manganese Limitation of Phytoplankton Physiology and Productivity in the Southern Ocean.Global biogeochemical cycles · 2022Article
- Phytoplankton Responses to Bacterially Regenerated Iron in a Southern Ocean Eddy.Microorganisms · 2022Article
- A sterol-mediated gleaner-opportunist trade-off underlies the evolution of grazer resistance to cyanobacteria.Proceedings. Biological sciences · 2022Article
- Cyclic electron flow (CEF) and ascorbate pathway activity provide constitutive photoprotection for the photopsychrophile, Chlamydomonas sp. UWO 241 (renamed Chlamydomonas priscuii).Photosynthesis research · 2022Article
- Growth at the limits: comparing trace metal limitation of a freshwater cyanobacterium (Dolichospermum lemmermannii) and a freshwater diatom (Fragilaria crotonensis).Scientific reports · 2022Article
- Global patterns in marine organic matter stoichiometry driven by phytoplankton ecophysiology.Nature geoscience · 2022Article
- Cellular costs underpin micronutrient limitation in phytoplankton.Science advances · 2021Article
- Molecular underpinnings and biogeochemical consequences of enhanced diatom growth in a warming Southern Ocean.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Article
- Photosynthetic energy conversion efficiency in the West Antarctic Peninsula.Limnology and oceanography · 2020Article
- AFrontiers in plant science · 2020Article
- A New Light on Photosystem II Maintenance in Oxygenic Photosynthesis.Frontiers in plant science · 2019Review
Corrections and comments
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Authors and funding
3 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Phytoplankton productivity in the polar Southern Ocean (SO) plays an important role in the transfer of carbon from the atmosphere to the ocean's interior, a process called the biological carbon pump, which helps regulate global climate. SO productivity in turn is limited by low iron, light, and temperature, which restrict the efficiency of the carbon pump. Iron and light can colimit productivity due to the high iron content of the photosynthetic photosystems and the need for increased photosystems for low-light acclimation in many phytoplankton. Here we show that SO phytoplankton have evolved critical adaptations to enhance photosynthetic rates under the joint constraints of low iron, light, and temperature. Under growth-limiting iron and light levels, three SO species had up to sixfold higher photosynthetic rates per photosystem II and similar or higher rates per mol of photosynthetic iron than temperate species, despite their lower growth temperature (3 vs. 18 °C) and light intensity (30 vs. 40 μmol quanta⋅m
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