A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions
Phaeocystis globosa , a red tide alga, often forms blooms in or adjacent to coastal waters and experiences changes in pH and seawater carbonate chemistry caused by either diel/periodic fluctuation in biological activity, human activity or, in the longer term, ocean acidification due to atmospheric C...
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ftdoajarticles:oai:doaj.org/article:ec75c9c478d34da9975c8c9aaff74405 2023-05-15T17:50:33+02:00 A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions S. Chen J. Beardall K. Gao 2014-09-01T00:00:00Z https://doi.org/10.5194/bg-11-4829-2014 https://doaj.org/article/ec75c9c478d34da9975c8c9aaff74405 EN eng Copernicus Publications http://www.biogeosciences.net/11/4829/2014/bg-11-4829-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-4829-2014 https://doaj.org/article/ec75c9c478d34da9975c8c9aaff74405 Biogeosciences, Vol 11, Iss 17, Pp 4829-4837 (2014) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/bg-11-4829-2014 2022-12-31T14:37:57Z Phaeocystis globosa , a red tide alga, often forms blooms in or adjacent to coastal waters and experiences changes in pH and seawater carbonate chemistry caused by either diel/periodic fluctuation in biological activity, human activity or, in the longer term, ocean acidification due to atmospheric CO 2 rise. We examined the photosynthetic physiology of this species while growing it under different pH levels induced by CO 2 enrichment and investigated its acclimation to carbonate chemistry changes under different light levels. Short-term exposure to reduced pH nbs (7.70) decreased the alga's photosynthesis and light use efficiency. However, acclimation to the reduced pH level for 1–19 generations led to recovered photosynthetic activity, being equivalent to that of cells grown under pH 8.07 (control), though such acclimation required a different time span (number of generations) under different light regimes. The low-pH-grown cells increased their contents of chlorophyll and carotenoids with prolonged acclimation to the acidification, with increased photosynthetic quantum yield and decreased non-photochemical quenching. The specific growth rate of the low-pH-grown cells also increased to emulate that grown under the ambient pH level. This study clearly shows that \textit{Phaeocystis globosa} is able to acclimate to seawater acidification by increasing its energy capture and decreasing its non-photochemical energy loss. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Biogeosciences 11 17 4829 4837 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 S. Chen J. Beardall K. Gao A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Phaeocystis globosa , a red tide alga, often forms blooms in or adjacent to coastal waters and experiences changes in pH and seawater carbonate chemistry caused by either diel/periodic fluctuation in biological activity, human activity or, in the longer term, ocean acidification due to atmospheric CO 2 rise. We examined the photosynthetic physiology of this species while growing it under different pH levels induced by CO 2 enrichment and investigated its acclimation to carbonate chemistry changes under different light levels. Short-term exposure to reduced pH nbs (7.70) decreased the alga's photosynthesis and light use efficiency. However, acclimation to the reduced pH level for 1–19 generations led to recovered photosynthetic activity, being equivalent to that of cells grown under pH 8.07 (control), though such acclimation required a different time span (number of generations) under different light regimes. The low-pH-grown cells increased their contents of chlorophyll and carotenoids with prolonged acclimation to the acidification, with increased photosynthetic quantum yield and decreased non-photochemical quenching. The specific growth rate of the low-pH-grown cells also increased to emulate that grown under the ambient pH level. This study clearly shows that \textit{Phaeocystis globosa} is able to acclimate to seawater acidification by increasing its energy capture and decreasing its non-photochemical energy loss. |
format |
Article in Journal/Newspaper |
author |
S. Chen J. Beardall K. Gao |
author_facet |
S. Chen J. Beardall K. Gao |
author_sort |
S. Chen |
title |
A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions |
title_short |
A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions |
title_full |
A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions |
title_fullStr |
A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions |
title_full_unstemmed |
A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions |
title_sort |
red tide alga grown under ocean acidification upregulates its tolerance to lower ph by increasing its photophysiological functions |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-4829-2014 https://doaj.org/article/ec75c9c478d34da9975c8c9aaff74405 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences, Vol 11, Iss 17, Pp 4829-4837 (2014) |
op_relation |
http://www.biogeosciences.net/11/4829/2014/bg-11-4829-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-4829-2014 https://doaj.org/article/ec75c9c478d34da9975c8c9aaff74405 |
op_doi |
https://doi.org/10.5194/bg-11-4829-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
17 |
container_start_page |
4829 |
op_container_end_page |
4837 |
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1766157357386039296 |