Unexpected ubiquity of heart‐shaped scale morphotype in Centroplasthelida (Haptista): Ancestral trait or multiple acquisitions?
Abstract Centrohelids (Haptista: Centroplasthelida) are axopodial protists with a remarkable diversity of external siliceous scale morphologies. It is believed that the last common ancestor of centrohelids had a double layer of siliceous scales composed of plate scales closer to a cell surface and s...
Published in: | Journal of Eukaryotic Microbiology |
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crwiley:10.1111/jeu.12992 2024-04-21T07:52:31+00:00 Unexpected ubiquity of heart‐shaped scale morphotype in Centroplasthelida (Haptista): Ancestral trait or multiple acquisitions? Gerasimova, Elena A. Mindolina, Yulia V. Tikhonenkov, Denis V. Kataev, Vladimir Y. Balkin, Alexander S. Mikhailov, Kirill V. Zagumyonnyi, Dmitry G. Plotnikov, Andrey O. Zlatogursky, Vasily V. Russian Science Foundation 2023 http://dx.doi.org/10.1111/jeu.12992 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jeu.12992 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Eukaryotic Microbiology volume 70, issue 6 ISSN 1066-5234 1550-7408 Microbiology journal-article 2023 crwiley https://doi.org/10.1111/jeu.12992 2024-03-28T08:28:39Z Abstract Centrohelids (Haptista: Centroplasthelida) are axopodial protists with a remarkable diversity of external siliceous scale morphologies. It is believed that the last common ancestor of centrohelids had a double layer of siliceous scales composed of plate scales closer to a cell surface and spine scales radiating outwards. The characteristic morphotype of spine scales with a heart‐shaped base was once believed to be a unique feature of the genus Choanocystis , as it was defined by Siemensma and Roijackers (1988). Further research revealed that this morphology is present in different and sometimes distantly related lineages: Ozanamiidae, Meringosphaeridae, and Marophryidae. Here, we report the fourth clade, Pterocystidae, which is also revealed to contain representatives having this phenotype. Cernunnos gen. nov. is erected here to place Cernunnos uralica sp. nov., Cernunnos arctica sp. nov., Cernunnos america sp. nov., and Cernunnos antarctica Tikhonenkov et Mylnikov, 2010, Gerasimova comb. nov. C . uralica was studied with scanning electron microscopy and SSU rDNA sequencing. Molecular phylogenetic analysis placed it into marine environmental clade P within Pterocystida. The ubiquity of spine scales with heart‐shaped bases could be an example of parallel evolution, but taking into account the considerable similarity it is likely an ancestral trait, acquired from the last common ancestor of centrohelids. Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library Journal of Eukaryotic Microbiology 70 6 |
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Wiley Online Library |
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English |
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Microbiology |
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Microbiology Gerasimova, Elena A. Mindolina, Yulia V. Tikhonenkov, Denis V. Kataev, Vladimir Y. Balkin, Alexander S. Mikhailov, Kirill V. Zagumyonnyi, Dmitry G. Plotnikov, Andrey O. Zlatogursky, Vasily V. Unexpected ubiquity of heart‐shaped scale morphotype in Centroplasthelida (Haptista): Ancestral trait or multiple acquisitions? |
topic_facet |
Microbiology |
description |
Abstract Centrohelids (Haptista: Centroplasthelida) are axopodial protists with a remarkable diversity of external siliceous scale morphologies. It is believed that the last common ancestor of centrohelids had a double layer of siliceous scales composed of plate scales closer to a cell surface and spine scales radiating outwards. The characteristic morphotype of spine scales with a heart‐shaped base was once believed to be a unique feature of the genus Choanocystis , as it was defined by Siemensma and Roijackers (1988). Further research revealed that this morphology is present in different and sometimes distantly related lineages: Ozanamiidae, Meringosphaeridae, and Marophryidae. Here, we report the fourth clade, Pterocystidae, which is also revealed to contain representatives having this phenotype. Cernunnos gen. nov. is erected here to place Cernunnos uralica sp. nov., Cernunnos arctica sp. nov., Cernunnos america sp. nov., and Cernunnos antarctica Tikhonenkov et Mylnikov, 2010, Gerasimova comb. nov. C . uralica was studied with scanning electron microscopy and SSU rDNA sequencing. Molecular phylogenetic analysis placed it into marine environmental clade P within Pterocystida. The ubiquity of spine scales with heart‐shaped bases could be an example of parallel evolution, but taking into account the considerable similarity it is likely an ancestral trait, acquired from the last common ancestor of centrohelids. |
author2 |
Russian Science Foundation |
format |
Article in Journal/Newspaper |
author |
Gerasimova, Elena A. Mindolina, Yulia V. Tikhonenkov, Denis V. Kataev, Vladimir Y. Balkin, Alexander S. Mikhailov, Kirill V. Zagumyonnyi, Dmitry G. Plotnikov, Andrey O. Zlatogursky, Vasily V. |
author_facet |
Gerasimova, Elena A. Mindolina, Yulia V. Tikhonenkov, Denis V. Kataev, Vladimir Y. Balkin, Alexander S. Mikhailov, Kirill V. Zagumyonnyi, Dmitry G. Plotnikov, Andrey O. Zlatogursky, Vasily V. |
author_sort |
Gerasimova, Elena A. |
title |
Unexpected ubiquity of heart‐shaped scale morphotype in Centroplasthelida (Haptista): Ancestral trait or multiple acquisitions? |
title_short |
Unexpected ubiquity of heart‐shaped scale morphotype in Centroplasthelida (Haptista): Ancestral trait or multiple acquisitions? |
title_full |
Unexpected ubiquity of heart‐shaped scale morphotype in Centroplasthelida (Haptista): Ancestral trait or multiple acquisitions? |
title_fullStr |
Unexpected ubiquity of heart‐shaped scale morphotype in Centroplasthelida (Haptista): Ancestral trait or multiple acquisitions? |
title_full_unstemmed |
Unexpected ubiquity of heart‐shaped scale morphotype in Centroplasthelida (Haptista): Ancestral trait or multiple acquisitions? |
title_sort |
unexpected ubiquity of heart‐shaped scale morphotype in centroplasthelida (haptista): ancestral trait or multiple acquisitions? |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1111/jeu.12992 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jeu.12992 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Journal of Eukaryotic Microbiology volume 70, issue 6 ISSN 1066-5234 1550-7408 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jeu.12992 |
container_title |
Journal of Eukaryotic Microbiology |
container_volume |
70 |
container_issue |
6 |
_version_ |
1796935740748201984 |