Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae)
A pink to red‐pigmented cryptophyte of undetermined taxonomic affinity was isolated and cloned from two seasonally ice‐covered. meromictic, saline Antarctic aquatic environments: Bayly Bay ( BB ) and Ace Lake ( AL ). The clones shared a number of morphological and ultrastructural similarities with o...
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crwiley:10.1111/jpy.13004 2024-04-07T07:48:06+00:00 Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) van den Hoff, John Bell, Elanor Whittock, Lucy Valentin, K. Australian Scientific Advisory Committee Deutsche Forschungsgemeinschaft (DFG) overseas stipendium Scientific Committee for Antarctic Research (SCAR) Prince of Asturias Fellowship 2020 http://dx.doi.org/10.1111/jpy.13004 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjpy.13004 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jpy.13004 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jpy.13004 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Phycology volume 56, issue 4, page 1028-1038 ISSN 0022-3646 1529-8817 Plant Science Aquatic Science journal-article 2020 crwiley https://doi.org/10.1111/jpy.13004 2024-03-08T03:51:09Z A pink to red‐pigmented cryptophyte of undetermined taxonomic affinity was isolated and cloned from two seasonally ice‐covered. meromictic, saline Antarctic aquatic environments: Bayly Bay ( BB ) and Ace Lake ( AL ). The clones shared a number of morphological and ultrastructural similarities with other cryptomonad genera, which confounded identification by light and electron microscopy. Cellular pigments extracted from the AL clone showed an absorption maximum corresponding to the biliprotein Cr‐phycoerythrin 545, thus narrowing its potential taxonomic affinities. Partial 18S SSU ribosomal gene sequences were isolated from both the AL and the BB cryptomonads’ nuclear rDNA , whereas PCR ‐amplified and their molecular phylogenies inferred from the subject sequences. Our results, and the results of another study that used our prepublished sequence data, invariably resolved both clones as very close matches with the Antarctic cryptophyte, Geminigera cryophila . When combined, the morphological, chemical, and molecular evidence suggested that both of our cryptophyte clones were a cryptomorph of the G. cryophila campylomorph. Slight differences between the AL and BB nuclear tree reconstructions suggested divergent microevolution following long‐term isolation of the AL population from the surrounding marine ecosystem. This study provides further compelling evidence that certain Cryptophyceae engage in a life‐history strategy, which includes alternating morphologically distinct cell‐types (dimorphism); cell‐types which without molecular analyses could be mistaken as novel taxa. Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library Antarctic The Antarctic Ace Lake ENVELOPE(78.188,78.188,-68.472,-68.472) Bayly ENVELOPE(-61.833,-61.833,-64.617,-64.617) Bayly Bay ENVELOPE(78.256,78.256,-68.442,-68.442) Journal of Phycology 56 4 1028 1038 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Plant Science Aquatic Science |
spellingShingle |
Plant Science Aquatic Science van den Hoff, John Bell, Elanor Whittock, Lucy Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) |
topic_facet |
Plant Science Aquatic Science |
description |
A pink to red‐pigmented cryptophyte of undetermined taxonomic affinity was isolated and cloned from two seasonally ice‐covered. meromictic, saline Antarctic aquatic environments: Bayly Bay ( BB ) and Ace Lake ( AL ). The clones shared a number of morphological and ultrastructural similarities with other cryptomonad genera, which confounded identification by light and electron microscopy. Cellular pigments extracted from the AL clone showed an absorption maximum corresponding to the biliprotein Cr‐phycoerythrin 545, thus narrowing its potential taxonomic affinities. Partial 18S SSU ribosomal gene sequences were isolated from both the AL and the BB cryptomonads’ nuclear rDNA , whereas PCR ‐amplified and their molecular phylogenies inferred from the subject sequences. Our results, and the results of another study that used our prepublished sequence data, invariably resolved both clones as very close matches with the Antarctic cryptophyte, Geminigera cryophila . When combined, the morphological, chemical, and molecular evidence suggested that both of our cryptophyte clones were a cryptomorph of the G. cryophila campylomorph. Slight differences between the AL and BB nuclear tree reconstructions suggested divergent microevolution following long‐term isolation of the AL population from the surrounding marine ecosystem. This study provides further compelling evidence that certain Cryptophyceae engage in a life‐history strategy, which includes alternating morphologically distinct cell‐types (dimorphism); cell‐types which without molecular analyses could be mistaken as novel taxa. |
author2 |
Valentin, K. Australian Scientific Advisory Committee Deutsche Forschungsgemeinschaft (DFG) overseas stipendium Scientific Committee for Antarctic Research (SCAR) Prince of Asturias Fellowship |
format |
Article in Journal/Newspaper |
author |
van den Hoff, John Bell, Elanor Whittock, Lucy |
author_facet |
van den Hoff, John Bell, Elanor Whittock, Lucy |
author_sort |
van den Hoff, John |
title |
Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) |
title_short |
Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) |
title_full |
Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) |
title_fullStr |
Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) |
title_full_unstemmed |
Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) |
title_sort |
dimorphism in the antarctic cryptophyte geminigera cryophila (cryptophyceae) |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/jpy.13004 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjpy.13004 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jpy.13004 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jpy.13004 |
long_lat |
ENVELOPE(78.188,78.188,-68.472,-68.472) ENVELOPE(-61.833,-61.833,-64.617,-64.617) ENVELOPE(78.256,78.256,-68.442,-68.442) |
geographic |
Antarctic The Antarctic Ace Lake Bayly Bayly Bay |
geographic_facet |
Antarctic The Antarctic Ace Lake Bayly Bayly Bay |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Journal of Phycology volume 56, issue 4, page 1028-1038 ISSN 0022-3646 1529-8817 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jpy.13004 |
container_title |
Journal of Phycology |
container_volume |
56 |
container_issue |
4 |
container_start_page |
1028 |
op_container_end_page |
1038 |
_version_ |
1795661957412421632 |