Survival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing
The colony-forming haptophyte Phaeocystis antarctica is an important primary producer in the Ross Sea, and must survive long periods of darkness and freezing temperature in this extreme environment. We conducted experiments on the responses of P. antarctica-dominated phytoplankton assemblages to pro...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
---|---|
Main Authors: | , , , |
Format: | Text |
Language: | English |
Published: |
The Royal Society
2008
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614241 http://www.ncbi.nlm.nih.gov/pubmed/18765338 https://doi.org/10.1098/rspb.2008.0598 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:2614241 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:2614241 2023-05-15T13:32:50+02:00 Survival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing Tang, Kam W Smith, Walker O Shields, Amy R Elliott, David T 2008-09-02 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614241 http://www.ncbi.nlm.nih.gov/pubmed/18765338 https://doi.org/10.1098/rspb.2008.0598 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614241 http://www.ncbi.nlm.nih.gov/pubmed/18765338 http://dx.doi.org/10.1098/rspb.2008.0598 © 2008 The Royal Society Research Article Text 2008 ftpubmed https://doi.org/10.1098/rspb.2008.0598 2013-09-02T09:23:26Z The colony-forming haptophyte Phaeocystis antarctica is an important primary producer in the Ross Sea, and must survive long periods of darkness and freezing temperature in this extreme environment. We conducted experiments on the responses of P. antarctica-dominated phytoplankton assemblages to prolonged periods of darkness and freezing. Chlorophyll and photosynthetic capacity of the alga declined nonlinearly and independently of each other in the dark, and darkness alone would potentially reduce photosynthetic capacity by only 60 per cent over 150 days (approximately the length of the Antarctic winter in the southern Ross Sea). The estimated reduction of colonial mucous carbon is higher than that of colonial cell carbon, suggesting metabolism of the colonial matrix in the dark. The alga quickly resumed growth upon return to light. Phaeocystis antarctica also survived freezing, although longer freezing durations lengthened the lag before growth resumption. Particulate dimethylsulfoniopropionate relative to chlorophyll increased upon freezing and decreased upon darkness. Taken together, the abilities of P. antarctica to survive freezing and initiate growth quickly after darkness may provide it with the capability to survive in both the ice and the water column, and help explain its repeated dominance in austral spring blooms in the Ross Sea and elsewhere in the Southern Ocean. Text Antarc* Antarctic Antarctica Ross Sea Southern Ocean PubMed Central (PMC) Antarctic Austral Ross Sea Southern Ocean The Antarctic Proceedings of the Royal Society B: Biological Sciences 276 1654 81 90 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Research Article |
spellingShingle |
Research Article Tang, Kam W Smith, Walker O Shields, Amy R Elliott, David T Survival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing |
topic_facet |
Research Article |
description |
The colony-forming haptophyte Phaeocystis antarctica is an important primary producer in the Ross Sea, and must survive long periods of darkness and freezing temperature in this extreme environment. We conducted experiments on the responses of P. antarctica-dominated phytoplankton assemblages to prolonged periods of darkness and freezing. Chlorophyll and photosynthetic capacity of the alga declined nonlinearly and independently of each other in the dark, and darkness alone would potentially reduce photosynthetic capacity by only 60 per cent over 150 days (approximately the length of the Antarctic winter in the southern Ross Sea). The estimated reduction of colonial mucous carbon is higher than that of colonial cell carbon, suggesting metabolism of the colonial matrix in the dark. The alga quickly resumed growth upon return to light. Phaeocystis antarctica also survived freezing, although longer freezing durations lengthened the lag before growth resumption. Particulate dimethylsulfoniopropionate relative to chlorophyll increased upon freezing and decreased upon darkness. Taken together, the abilities of P. antarctica to survive freezing and initiate growth quickly after darkness may provide it with the capability to survive in both the ice and the water column, and help explain its repeated dominance in austral spring blooms in the Ross Sea and elsewhere in the Southern Ocean. |
format |
Text |
author |
Tang, Kam W Smith, Walker O Shields, Amy R Elliott, David T |
author_facet |
Tang, Kam W Smith, Walker O Shields, Amy R Elliott, David T |
author_sort |
Tang, Kam W |
title |
Survival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing |
title_short |
Survival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing |
title_full |
Survival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing |
title_fullStr |
Survival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing |
title_full_unstemmed |
Survival and recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged darkness and freezing |
title_sort |
survival and recovery of phaeocystis antarctica (prymnesiophyceae) from prolonged darkness and freezing |
publisher |
The Royal Society |
publishDate |
2008 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614241 http://www.ncbi.nlm.nih.gov/pubmed/18765338 https://doi.org/10.1098/rspb.2008.0598 |
geographic |
Antarctic Austral Ross Sea Southern Ocean The Antarctic |
geographic_facet |
Antarctic Austral Ross Sea Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Ross Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614241 http://www.ncbi.nlm.nih.gov/pubmed/18765338 http://dx.doi.org/10.1098/rspb.2008.0598 |
op_rights |
© 2008 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2008.0598 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
276 |
container_issue |
1654 |
container_start_page |
81 |
op_container_end_page |
90 |
_version_ |
1766036404341571584 |