A NEW CELL STAGE IN THE HAPLOID-DIPLOID LIFE CYCLE OF THE COLONY-FORMING HAPTOPHYTE PHAEOCYSTIS ANTARCTICA AND ITS ECOLOGICAL IMPLICATIONS1
German Science Foundation (DFG) [ME 1480/2]; Australian government's Cooperative Research Centre through the Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC); Australian Antarctic Science program [40]; German Research Foundation (DFG Few members of the well-studied marine...
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ftxiamenuniv:oai:dspace.xmu.edu.cn:2288/87767 2023-05-15T13:51:20+02:00 A NEW CELL STAGE IN THE HAPLOID-DIPLOID LIFE CYCLE OF THE COLONY-FORMING HAPTOPHYTE PHAEOCYSTIS ANTARCTICA AND ITS ECOLOGICAL IMPLICATIONS1 Gaebler-Schwarz, Steffi Davidson, Andrew Assmy, Philipp Chen, Jixin Henjes, Joachim Noethig, Eva-Maria Lunau, Mirko Medlin, Linda K. 陈纪新 2010-10 http://dspace.xmu.edu.cn/handle/2288/87767 en_US eng J PHYCOL JOURNAL OF PHYCOLOGY, 2010,46(5):1006-1016 WOS:000282378200018 http://dspace.xmu.edu.cn/handle/2288/87767 http://dx.doi.org/10.1111/j.1529-8817.2010.00875.x MARINE-PHYTOPLANKTON SOUTHERN-OCEAN VIRAL-INFECTION PRYMNESIOPHYCEAE ALGAE DMSP GLOBOSA SULFUR Article 2010 ftxiamenuniv 2020-07-21T11:42:21Z German Science Foundation (DFG) [ME 1480/2]; Australian government's Cooperative Research Centre through the Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC); Australian Antarctic Science program [40]; German Research Foundation (DFG Few members of the well-studied marine phytoplankton taxa have such a complex and polymorphic life cycle as the genus Phaeocystis. However, despite the ecological and biogeochemical importance of Phaeocystis blooms, the life cycle of the major bloom-forming species of this genus remains illusive and poorly resolved. At least six different life stages and up to 15 different functional components of the life cycle have been proposed. Our culture and field observations indicate that there is a previously unrecognized stage in the life cycle of P. antarctica G. Karst. This stage comprises nonmotile cells that range in size from similar to 4.2 to 9.8 mu m in diameter and form aggregates in which interstitial spaces between cells are small or absent. The aggregates (hereafter called attached aggregates, AAs) adhere to available surfaces. In field samples, small AAs, surrounded by a colony skin, adopt an epiphytic lifestyle and adhere in most cases to setae or spines of diatoms. These AAs, either directly or via other life stages, produce the colonial life stage. Culture studies indicate that bloom-forming, colonial stages release flagellates (microzoospores) that fuse and form AAs, which can proliferate on the bottom of culture vessels and can eventually reform free-floating colonies. We propose that these AAs are a new stage in the life cycle of P. antarctica, which we believe to be the zygote, thus documenting sexual reproduction in this species for the first time. Article in Journal/Newspaper Antarc* Antarctic Antarctic Climate and Ecosystems Cooperative Research Centre Antarctica Southern Ocean Xiamen University Institutional Repository Antarctic Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
Xiamen University Institutional Repository |
op_collection_id |
ftxiamenuniv |
language |
English |
topic |
MARINE-PHYTOPLANKTON SOUTHERN-OCEAN VIRAL-INFECTION PRYMNESIOPHYCEAE ALGAE DMSP GLOBOSA SULFUR |
spellingShingle |
MARINE-PHYTOPLANKTON SOUTHERN-OCEAN VIRAL-INFECTION PRYMNESIOPHYCEAE ALGAE DMSP GLOBOSA SULFUR Gaebler-Schwarz, Steffi Davidson, Andrew Assmy, Philipp Chen, Jixin Henjes, Joachim Noethig, Eva-Maria Lunau, Mirko Medlin, Linda K. 陈纪新 A NEW CELL STAGE IN THE HAPLOID-DIPLOID LIFE CYCLE OF THE COLONY-FORMING HAPTOPHYTE PHAEOCYSTIS ANTARCTICA AND ITS ECOLOGICAL IMPLICATIONS1 |
topic_facet |
MARINE-PHYTOPLANKTON SOUTHERN-OCEAN VIRAL-INFECTION PRYMNESIOPHYCEAE ALGAE DMSP GLOBOSA SULFUR |
description |
German Science Foundation (DFG) [ME 1480/2]; Australian government's Cooperative Research Centre through the Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC); Australian Antarctic Science program [40]; German Research Foundation (DFG Few members of the well-studied marine phytoplankton taxa have such a complex and polymorphic life cycle as the genus Phaeocystis. However, despite the ecological and biogeochemical importance of Phaeocystis blooms, the life cycle of the major bloom-forming species of this genus remains illusive and poorly resolved. At least six different life stages and up to 15 different functional components of the life cycle have been proposed. Our culture and field observations indicate that there is a previously unrecognized stage in the life cycle of P. antarctica G. Karst. This stage comprises nonmotile cells that range in size from similar to 4.2 to 9.8 mu m in diameter and form aggregates in which interstitial spaces between cells are small or absent. The aggregates (hereafter called attached aggregates, AAs) adhere to available surfaces. In field samples, small AAs, surrounded by a colony skin, adopt an epiphytic lifestyle and adhere in most cases to setae or spines of diatoms. These AAs, either directly or via other life stages, produce the colonial life stage. Culture studies indicate that bloom-forming, colonial stages release flagellates (microzoospores) that fuse and form AAs, which can proliferate on the bottom of culture vessels and can eventually reform free-floating colonies. We propose that these AAs are a new stage in the life cycle of P. antarctica, which we believe to be the zygote, thus documenting sexual reproduction in this species for the first time. |
format |
Article in Journal/Newspaper |
author |
Gaebler-Schwarz, Steffi Davidson, Andrew Assmy, Philipp Chen, Jixin Henjes, Joachim Noethig, Eva-Maria Lunau, Mirko Medlin, Linda K. 陈纪新 |
author_facet |
Gaebler-Schwarz, Steffi Davidson, Andrew Assmy, Philipp Chen, Jixin Henjes, Joachim Noethig, Eva-Maria Lunau, Mirko Medlin, Linda K. 陈纪新 |
author_sort |
Gaebler-Schwarz, Steffi |
title |
A NEW CELL STAGE IN THE HAPLOID-DIPLOID LIFE CYCLE OF THE COLONY-FORMING HAPTOPHYTE PHAEOCYSTIS ANTARCTICA AND ITS ECOLOGICAL IMPLICATIONS1 |
title_short |
A NEW CELL STAGE IN THE HAPLOID-DIPLOID LIFE CYCLE OF THE COLONY-FORMING HAPTOPHYTE PHAEOCYSTIS ANTARCTICA AND ITS ECOLOGICAL IMPLICATIONS1 |
title_full |
A NEW CELL STAGE IN THE HAPLOID-DIPLOID LIFE CYCLE OF THE COLONY-FORMING HAPTOPHYTE PHAEOCYSTIS ANTARCTICA AND ITS ECOLOGICAL IMPLICATIONS1 |
title_fullStr |
A NEW CELL STAGE IN THE HAPLOID-DIPLOID LIFE CYCLE OF THE COLONY-FORMING HAPTOPHYTE PHAEOCYSTIS ANTARCTICA AND ITS ECOLOGICAL IMPLICATIONS1 |
title_full_unstemmed |
A NEW CELL STAGE IN THE HAPLOID-DIPLOID LIFE CYCLE OF THE COLONY-FORMING HAPTOPHYTE PHAEOCYSTIS ANTARCTICA AND ITS ECOLOGICAL IMPLICATIONS1 |
title_sort |
new cell stage in the haploid-diploid life cycle of the colony-forming haptophyte phaeocystis antarctica and its ecological implications1 |
publisher |
J PHYCOL |
publishDate |
2010 |
url |
http://dspace.xmu.edu.cn/handle/2288/87767 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Climate and Ecosystems Cooperative Research Centre Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Climate and Ecosystems Cooperative Research Centre Antarctica Southern Ocean |
op_source |
http://dx.doi.org/10.1111/j.1529-8817.2010.00875.x |
op_relation |
JOURNAL OF PHYCOLOGY, 2010,46(5):1006-1016 WOS:000282378200018 http://dspace.xmu.edu.cn/handle/2288/87767 |
_version_ |
1766255147621548032 |