ArticlePhotosynthesis research2022
Cyclic electron flow (CEF) and ascorbate pathway activity provide constitutive photoprotection for the photopsychrophile, Chlamydomonas sp. UWO 241 (renamed Chlamydomonas priscuii).
Article in Photosynthesis research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 32 citations in OpenAlex.
- HSDSnake: a user-friendly SnakeMake pipeline for analysis of duplicate genes in eukaryotic genomes.Bioinformatics (Oxford, England) · 2025Article
- Light quality affects chlorophyll biosynthesis and photosynthetic performance in Antarctic Chlamydomonas.Photosynthesis research · 2025Article
- Snow alga Sanguina aurantia as revealed through de novo genome assembly and annotation.G3 (Bethesda, Md.) · 2024Article
- Permanent Stress Adaptation and Unexpected High Light Tolerance in the Shade-AdaptedPlants (Basel, Switzerland) · 2024Article
- Aberrant light sensing and motility in the green algaPlant signaling & behavior · 2023Article
- High salt-induced PSI-supercomplex is associated with high CEF and attenuation of state transitions.Photosynthesis research · 2023Article
- Nanobiotechnology in crop stress management: an overview of novel applications.Discover nano · 2023Review
- Convergent evolution and horizontal gene transfer in Arctic Ocean microalgae.Life science alliance · 2023Article
- Antarctic lake phytoplankton and bacteria from near-surface waters exhibit high sensitivity to climate-driven disturbance.Environmental microbiology · 2022Article
- HSDatabase-a database of highly similar duplicate genes from plants, animals, and algae.Database : the journal of biological databases and curation · 2022Article
- Heavy metal-induced stress in eukaryotic algae-mechanisms of heavy metal toxicity and tolerance with particular emphasis on oxidative stress in exposed cells and the role of antioxidant response.Environmental science and pollution research international · 2022Review
- A species by any other name would sound as sweet.EMBO reports · 2022Article
- An overview of online resources for intra-species detection of gene duplications.Frontiers in genetics · 2022Review
- Identification of phytoplankton isolates from the eastern Canadian waters using long-read sequencing.Journal of plankton researchArticle
- 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
7 authors at 4 institutions in 2 countries.
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Abstract
Under environmental stress, plants and algae employ a variety of strategies to protect the photosynthetic apparatus and maintain photostasis. To date, most studies on stress acclimation have focused on model organisms which possess limited to no tolerance to stressful extremes. We studied the ability of the Antarctic alga Chlamydomonas sp. UWO 241 (UWO 241) to acclimate to low temperature, high salinity or high light. UWO 241 maintained robust growth and photosynthetic activity at levels of temperature (2 °C) and salinity (700 mM NaCl) which were nonpermissive for a mesophilic sister species, Chlamydomonas raudensis SAG 49.72 (SAG 49.72). Acclimation in the mesophile involved classic mechanisms, including downregulation of light harvesting and shifts in excitation energy between photosystem I and II. In contrast, UWO 241 exhibited high rates of PSI-driven cyclic electron flow (CEF) and a larger capacity for nonphotochemical quenching (NPQ). Furthermore, UWO 241 exhibited constitutively high activity of two key ascorbate cycle enzymes, ascorbate peroxidase and glutathione reductase and maintained a large ascorbate pool. These results matched the ability of the psychrophile to maintain low ROS under short-term photoinhibition conditions. We conclude that tight control over photostasis and ROS levels are essential for photosynthetic life to flourish in a native habitat of permanent photooxidative stress. We propose to rename this organism Chlamydomonas priscuii.
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