Triangulopteris lacunata gen. et sp. nov. (Centroplasthelida), a New Centrohelid Heliozoan from Soil
A new genus and species of centrohelid heliozoans, Triangulopteris lacunata gen. et sp. nov. (Pterocystidae Cavalier-Smith and Heyden, 2007), from four geographically remote locations (the Crimean Peninsula, the Dnieper Lowland (the East European Plain), Franz Josef Land, and the Kolyma Lowland (Nor...
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ftmdpi:oai:mdpi.com:/1424-2818/13/12/658/ 2023-08-20T04:06:36+02:00 Triangulopteris lacunata gen. et sp. nov. (Centroplasthelida), a New Centrohelid Heliozoan from Soil Dmitry G. Zagumyonnyi Liudmila V. Radaykina Denis V. Tikhonenkov agris 2021-12-11 application/pdf https://doi.org/10.3390/d13120658 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/d13120658 https://creativecommons.org/licenses/by/4.0/ Diversity; Volume 13; Issue 12; Pages: 658 protists centrohelid heliozoans Triangulopteris lacunata morphology skeletal elements electron microscopy 18S rDNA Text 2021 ftmdpi https://doi.org/10.3390/d13120658 2023-08-01T03:31:35Z A new genus and species of centrohelid heliozoans, Triangulopteris lacunata gen. et sp. nov. (Pterocystidae Cavalier-Smith and Heyden, 2007), from four geographically remote locations (the Crimean Peninsula, the Dnieper Lowland (the East European Plain), Franz Josef Land, and the Kolyma Lowland (North–Eastern Siberia) was examined using light and electron microscopy. The novel centrohelid is characterized by round shape, 4.3–16.3 μm in diameter, covered with two types of scales: 1.06–4.54 μm long triangular spine scales and 1.22–2.05 μm oval plate scales. Studied centrohelid heliozoan possesses a unique spine scale morphology. The base of scales is represented by a horse hoof-shaped basal plate. The inner surface and lateral wings of spine scales have numerous radial ribs with two ‘pockets’ that are located on both sides of the spine shaft. These pockets are formed by the lateral wings and ends of the basal plate. The cyst formation and transition to a spicules-bearing stage were noted. Additionally, phylogenetic tree was constructed based on SSU rRNA sequences including the strain HF-25 from the permafrost of Kolyma Lowland. The resulting phylogeny recovered it within the clade Pterista, while forming a separate sister lineage to H2 clade, which only had included freshwater environmental sequences. Text Franz Josef Land permafrost Siberia MDPI Open Access Publishing Cavalier ENVELOPE(-69.462,-69.462,-67.825,-67.825) Franz Josef Land ENVELOPE(55.000,55.000,81.000,81.000) Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Diversity 13 12 658 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
protists centrohelid heliozoans Triangulopteris lacunata morphology skeletal elements electron microscopy 18S rDNA |
spellingShingle |
protists centrohelid heliozoans Triangulopteris lacunata morphology skeletal elements electron microscopy 18S rDNA Dmitry G. Zagumyonnyi Liudmila V. Radaykina Denis V. Tikhonenkov Triangulopteris lacunata gen. et sp. nov. (Centroplasthelida), a New Centrohelid Heliozoan from Soil |
topic_facet |
protists centrohelid heliozoans Triangulopteris lacunata morphology skeletal elements electron microscopy 18S rDNA |
description |
A new genus and species of centrohelid heliozoans, Triangulopteris lacunata gen. et sp. nov. (Pterocystidae Cavalier-Smith and Heyden, 2007), from four geographically remote locations (the Crimean Peninsula, the Dnieper Lowland (the East European Plain), Franz Josef Land, and the Kolyma Lowland (North–Eastern Siberia) was examined using light and electron microscopy. The novel centrohelid is characterized by round shape, 4.3–16.3 μm in diameter, covered with two types of scales: 1.06–4.54 μm long triangular spine scales and 1.22–2.05 μm oval plate scales. Studied centrohelid heliozoan possesses a unique spine scale morphology. The base of scales is represented by a horse hoof-shaped basal plate. The inner surface and lateral wings of spine scales have numerous radial ribs with two ‘pockets’ that are located on both sides of the spine shaft. These pockets are formed by the lateral wings and ends of the basal plate. The cyst formation and transition to a spicules-bearing stage were noted. Additionally, phylogenetic tree was constructed based on SSU rRNA sequences including the strain HF-25 from the permafrost of Kolyma Lowland. The resulting phylogeny recovered it within the clade Pterista, while forming a separate sister lineage to H2 clade, which only had included freshwater environmental sequences. |
format |
Text |
author |
Dmitry G. Zagumyonnyi Liudmila V. Radaykina Denis V. Tikhonenkov |
author_facet |
Dmitry G. Zagumyonnyi Liudmila V. Radaykina Denis V. Tikhonenkov |
author_sort |
Dmitry G. Zagumyonnyi |
title |
Triangulopteris lacunata gen. et sp. nov. (Centroplasthelida), a New Centrohelid Heliozoan from Soil |
title_short |
Triangulopteris lacunata gen. et sp. nov. (Centroplasthelida), a New Centrohelid Heliozoan from Soil |
title_full |
Triangulopteris lacunata gen. et sp. nov. (Centroplasthelida), a New Centrohelid Heliozoan from Soil |
title_fullStr |
Triangulopteris lacunata gen. et sp. nov. (Centroplasthelida), a New Centrohelid Heliozoan from Soil |
title_full_unstemmed |
Triangulopteris lacunata gen. et sp. nov. (Centroplasthelida), a New Centrohelid Heliozoan from Soil |
title_sort |
triangulopteris lacunata gen. et sp. nov. (centroplasthelida), a new centrohelid heliozoan from soil |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/d13120658 |
op_coverage |
agris |
long_lat |
ENVELOPE(-69.462,-69.462,-67.825,-67.825) ENVELOPE(55.000,55.000,81.000,81.000) ENVELOPE(161.000,161.000,69.500,69.500) |
geographic |
Cavalier Franz Josef Land Kolyma |
geographic_facet |
Cavalier Franz Josef Land Kolyma |
genre |
Franz Josef Land permafrost Siberia |
genre_facet |
Franz Josef Land permafrost Siberia |
op_source |
Diversity; Volume 13; Issue 12; Pages: 658 |
op_relation |
https://dx.doi.org/10.3390/d13120658 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/d13120658 |
container_title |
Diversity |
container_volume |
13 |
container_issue |
12 |
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658 |
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1774717820985147392 |