Journal article 799 views 17 downloads
Chain or sphere? Perspectives on colony shapes and sizes in microalgae
Journal of Plankton Research, Volume: 44, Issue: 4, Pages: 521 - 527
Swansea University Author:
Kam Tang
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DOI (Published version): 10.1093/plankt/fbac032
Abstract
Some microalgal species can increase their collective size by forming colonies; notable examples are chained colonies in diatoms and Scenedesmus sp., and spherical colonies in Phaeocystis globosa. For a given cell specific growth rate, chain formation increases collective length quickly to fend off...
Published in: | Journal of Plankton Research |
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ISSN: | 0142-7873 1464-3774 |
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Oxford University Press (OUP)
2022
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URI: | https://cronfa.swan.ac.uk/Record/cronfa60080 |
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v2 60080 2022-05-25 Chain or sphere? Perspectives on colony shapes and sizes in microalgae 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2022-05-25 BGPS Some microalgal species can increase their collective size by forming colonies; notable examples are chained colonies in diatoms and Scenedesmus sp., and spherical colonies in Phaeocystis globosa. For a given cell specific growth rate, chain formation increases collective length quickly to fend off ciliates, but not against tube- and pallium-feeding heterotrophic dinoflagellates or metazoan grazers with ability to manipulate chains to aid ingestion. Sphere increases in volume relatively slowly but would be difficult to manipulate even for metazoan grazers. Diffusive nutrient supply to a chained colony would be a fixed proportion of that to solitary cells, regardless of chain length, whereas cells within a spherical colony would experience increasing nutrient limitation with increasing colony size. One hemisphere of a spherical colony would inevitably receive less irradiance, creating an auto light limitation. Experimental data showed that light decreased substantially as it passed through a P. globosa colony, and the optical density of the colony increased linearly with colony diameter. However, neither in situ nutrient nor light limitation alone can explain an order-of-magnitude difference in colony size between the European and the Asian P. globosa populations. Instead, some evidence of different expression of gene(s) involved in colony formation and enlargement suggests genomic variations among the different populations. Journal Article Journal of Plankton Research 44 4 521 527 Oxford University Press (OUP) 0142-7873 1464-3774 microalgae; colony formation; nutrient; light; defense 23 7 2022 2022-07-23 10.1093/plankt/fbac032 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Not Required This study was supported by Key Laboratory of Tropical Marine Ecosystem and 251 Bioresource, MNR (2021ZD02) and National Science Foundation of China (41976082). 2024-07-12T15:35:07.9086297 2022-05-25T08:33:42.3053381 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Xiaodong Wang 0000-0003-4952-7180 1 Kam Tang 0000-0001-9427-9564 2 60080__24400__914aecf296c34dbab4f4b309b65d0897.pdf 60080.pdf 2022-06-27T16:49:01.6859764 Output 832206 application/pdf Accepted Manuscript true 2023-06-28T00:00:00.0000000 true eng |
title |
Chain or sphere? Perspectives on colony shapes and sizes in microalgae |
spellingShingle |
Chain or sphere? Perspectives on colony shapes and sizes in microalgae Kam Tang |
title_short |
Chain or sphere? Perspectives on colony shapes and sizes in microalgae |
title_full |
Chain or sphere? Perspectives on colony shapes and sizes in microalgae |
title_fullStr |
Chain or sphere? Perspectives on colony shapes and sizes in microalgae |
title_full_unstemmed |
Chain or sphere? Perspectives on colony shapes and sizes in microalgae |
title_sort |
Chain or sphere? Perspectives on colony shapes and sizes in microalgae |
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69af43a3b9da24aef65c5d3a44956fe3 |
author_id_fullname_str_mv |
69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang |
author |
Kam Tang |
author2 |
Xiaodong Wang Kam Tang |
format |
Journal article |
container_title |
Journal of Plankton Research |
container_volume |
44 |
container_issue |
4 |
container_start_page |
521 |
publishDate |
2022 |
institution |
Swansea University |
issn |
0142-7873 1464-3774 |
doi_str_mv |
10.1093/plankt/fbac032 |
publisher |
Oxford University Press (OUP) |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences |
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description |
Some microalgal species can increase their collective size by forming colonies; notable examples are chained colonies in diatoms and Scenedesmus sp., and spherical colonies in Phaeocystis globosa. For a given cell specific growth rate, chain formation increases collective length quickly to fend off ciliates, but not against tube- and pallium-feeding heterotrophic dinoflagellates or metazoan grazers with ability to manipulate chains to aid ingestion. Sphere increases in volume relatively slowly but would be difficult to manipulate even for metazoan grazers. Diffusive nutrient supply to a chained colony would be a fixed proportion of that to solitary cells, regardless of chain length, whereas cells within a spherical colony would experience increasing nutrient limitation with increasing colony size. One hemisphere of a spherical colony would inevitably receive less irradiance, creating an auto light limitation. Experimental data showed that light decreased substantially as it passed through a P. globosa colony, and the optical density of the colony increased linearly with colony diameter. However, neither in situ nutrient nor light limitation alone can explain an order-of-magnitude difference in colony size between the European and the Asian P. globosa populations. Instead, some evidence of different expression of gene(s) involved in colony formation and enlargement suggests genomic variations among the different populations. |
published_date |
2022-07-23T15:35:06Z |
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1804384240151822336 |
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11.021648 |