ArticleExtremophiles : life under extreme conditions2012
Temperature responses of growth, photosynthesis, fatty acid and nitrate reductase in Antarctic and temperate Stichococcus.
Article in Extremophiles : life under extreme conditions, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 37 citations in OpenAlex.
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- Cold Adaptation Mechanisms of a Snow AlgaFrontiers in microbiology · 2020Article
- Nitrate or ammonium: Influences of nitrogen source on the physiology of a green alga.Ecology and evolution · 2019Article
- Acclimation of Antarctic Chlamydomonas to the sea-ice environment: a transcriptomic analysis.Extremophiles : life under extreme conditions · 2016Article
- Polar Microalgae: New Approaches towards Understanding Adaptations to an Extreme and Changing Environment.Biology · 2014Article
- Bioprocessing of Stichococcus bacillaris strain siva2011.Biotechnology for biofuels · 2014Article
- The Antarctic Chlamydomonas raudensis: an emerging model for cold adaptation of photosynthesis.Extremophiles : life under extreme conditions · 2013Review
- Purification and biochemical characterisation of a glucose-6-phosphate dehydrogenase from the psychrophilic green alga Koliella antarctica.Extremophiles : life under extreme conditions · 2013Article
- Scenedesmus sp. NJ-1 isolated from Antarctica: a suitable renewable lipid source for biodiesel production.World journal of microbiology & biotechnology · 2012Article
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Stichococcus, a genus of green algae, distributes in ice-free areas throughout Antarctica. To understand adaptive strategies of Stichococcus to permanently cold environments, the physiological responses to temperature of two psychrotolerants, S. bacillaris NJ-10 and S. minutus NJ-17, isolated from rock surfaces in Antarctica were compared with that of one temperate S. bacillaris FACHB753. Two Antarctic Stichococcus strains grew at temperature from 4 to 25°C, while the temperate strain could grow above 30°C but could not survive at 4°C. The photosynthetic activity of FACHB753 at lower than 10°C was less than that of Antarctic algae. Nitrate reductase in NJ-10 and NJ-17 had its optimal temperature at 20°C, in comparison, the maximal activity of nitrate reductase in FACHB753 was found at 25°C. When cultured at 4-15°C a large portion of unsaturated fatty acids in the two Antarctic species was detected and the regulation of the degree of unsaturation of fatty acids by temperature was observed only above 15°C, though the content of the major unsaturated fatty acid αC18:3 in FACHB753 decreased with the temperatures elevated from 10 to 25°C. Elevated nitrate reductase activity and photosynthetic rates at low temperatures together with the high proportion of unsaturated fatty acids contribute to the ability of the Antarctic Stichococcus to thrive.
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