The possible fates of Fragilariopsis cylindrus (polar diatom) cells exposed to prolonged darkness

2022 ◽  
Author(s):  
Théo Sciandra ◽  
Marie‐Hélène Forget ◽  
Flavienne Bruyant ◽  
Marine Béguin ◽  
Thomas Lacour ◽  
...  
Keyword(s):  
Fragilariopsis Cylindrus

scholarly journals Dark metabolism: a molecular insight into how the Antarctic sea‐ice diatom Fragilariopsis cylindrus survives long‐term darkness

2019 ◽  
Vol 223 (2) ◽  
pp. 675-691 ◽  
Author(s):  
Fraser Kennedy ◽  
Andrew Martin ◽  
John P. Bowman ◽  
Richard Wilson ◽  
Andrew McMinn
Keyword(s):  
Sea Ice ◽  
Antarctic Sea Ice ◽  
Fragilariopsis Cylindrus ◽  
Dark Metabolism ◽  
The Antarctic ◽  
Insight Into

scholarly journals Identifying metabolic pathways for production of extracellular polymeric substances by the diatom Fragilariopsis cylindrus inhabiting sea ice

2018 ◽  
Vol 12 (5) ◽  
pp. 1237-1251 ◽  
Author(s):  
Shazia N. Aslam ◽  
Jan Strauss ◽  
David N. Thomas ◽  
Thomas Mock ◽  
Graham J. C. Underwood
Keyword(s):  
Sea Ice ◽  
Metabolic Pathways ◽  
Extracellular Polymeric Substances ◽  
Fragilariopsis Cylindrus

Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus

Polar Biology ◽  
2020 ◽  
Vol 43 (5) ◽  
pp. 483-494 ◽  
Author(s):  
Boris Wittek ◽  
Gauthier Carnat ◽  
Jean-Louis Tison ◽  
Nathalie Gypens
Keyword(s):  
Sea Ice ◽  
Fragilariopsis Cylindrus

scholarly journals Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom <i>Fragilariopsis cylindrus</i>

2015 ◽  
Vol 12 (14) ◽  
pp. 4235-4244 ◽  
Author(s):  
M. Pančić ◽  
P. J. Hansen ◽  
A. Tammilehto ◽  
N. Lundholm
Keyword(s):  
Climate Change ◽  
Growth Rates ◽  
Significant Interaction ◽  
Elevated Temperatures ◽  
Future Climate Change ◽  
Change Scenario ◽  
Ph Tolerance ◽  
Increased Temperature ◽  
Fragilariopsis Cylindrus ◽  
Negative Effect

Abstract. The effects of ocean acidification and increased temperature on physiology of six strains of the polar diatom Fragilariopsis cylindrus from Greenland were investigated. Experiments were performed under manipulated pH levels (8.0, 7.7, 7.4, and 7.1) and different temperatures (1, 5, and 8 °C) to simulate changes from present to plausible future levels. Each of the 12 scenarios was run for 7 days, and a significant interaction between temperature and pH on growth was detected. By combining increased temperature and acidification, the two factors counterbalanced each other, and therefore no effect on the growth rates was found. However, the growth rates increased with elevated temperatures by ~ 20–50 % depending on the strain. In addition, a general negative effect of increasing acidification on growth was observed. At pH 7.7 and 7.4, the growth response varied considerably among strains. However, a more uniform response was detected at pH 7.1 with most of the strains exhibiting reduced growth rates by 20–37 % compared to pH 8.0. It should be emphasized that a significant interaction between temperature and pH was found, meaning that the combination of the two parameters affected growth differently than when considering one at a time. Based on these results, we anticipate that the polar diatom F. cylindrus will be unaffected by changes in temperature and pH within the range expected by the end of the century. In each simulated scenario, the variation in growth rates among the strains was larger than the variation observed due to the whole range of changes in either pH or temperature. Climate change may therefore not affect the species as such, but may lead to changes in the population structure of the species, with the strains exhibiting high phenotypic plasticity, in terms of temperature and pH tolerance towards future conditions, dominating the population.

scholarly journals Response of the sea‐ice diatom Fragilariopsis cylindrus to simulated polar night darkness and return to light

2019 ◽  
Vol 65 (5) ◽  
pp. 1041-1060 ◽  
Author(s):  
Philippe‐Israël Morin ◽  
Thomas Lacour ◽  
Pierre‐Luc Grondin ◽  
Flavienne Bruyant ◽  
Joannie Ferland ◽  
...  
Keyword(s):  
Sea Ice ◽  
Polar Night ◽  
Fragilariopsis Cylindrus

THE EFFECT OF IRON LIMITATION ON THE PHOTOPHYSIOLOGY OF PHAEOCYSTIS ANTARCTICA (PRYMNESIOPHYCEAE) AND FRAGILARIOPSIS CYLINDRUS (BACILLARIOPHYCEAE) UNDER DYNAMIC IRRADIANCE1

2012 ◽  
Vol 48 (1) ◽  
pp. 45-59 ◽  
Author(s):  
Anne-Carlijn Alderkamp ◽  
Gemma Kulk ◽  
Anita G. J. Buma ◽  
Ronald J. W. Visser ◽  
Gert L. Van Dijken ◽  
...  
Keyword(s):  
Iron Limitation ◽  
Fragilariopsis Cylindrus ◽  
Phaeocystis Antarctica

scholarly journals Evolutionary genomics of the cold-adapted diatom Fragilariopsis cylindrus

Nature ◽  
2017 ◽  
Vol 541 (7638) ◽  
pp. 536-540 ◽  
Author(s):  
Thomas Mock ◽  
Robert P. Otillar ◽  
Jan Strauss ◽  
Mark McMullan ◽  
Pirita Paajanen ◽  
...  
Keyword(s):  
Evolutionary Genomics ◽  
Cold Adapted ◽  
Fragilariopsis Cylindrus
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