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Chain or sphere? Perspectives on colony shapes and sizes in microalgae

Xiaodong Wang Orcid Logo, Kam Tang Orcid Logo

Journal of Plankton Research, Volume: 44, Issue: 4, Pages: 521 - 527

Swansea University Author: Kam Tang Orcid Logo

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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...

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Published in: Journal of Plankton Research
ISSN: 0142-7873 1464-3774
Published: Oxford University Press (OUP) 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa60080
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first_indexed 2022-05-25T07:38:35Z
last_indexed 2023-01-11T14:41:48Z
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spelling 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
author_id_str_mv 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)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
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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