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 other...
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Online Access: | https://doi.org/10.1111/jpy.13004 http://www.ncbi.nlm.nih.gov/pubmed/32289881 http://ecite.utas.edu.au/143189 |
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ftunivtasecite:oai:ecite.utas.edu.au:143189 2023-05-15T13:59:46+02:00 Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) van den Hoff, J Bell, E Whittock, L 2020 https://doi.org/10.1111/jpy.13004 http://www.ncbi.nlm.nih.gov/pubmed/32289881 http://ecite.utas.edu.au/143189 en eng Blackwell Publishing Inc http://dx.doi.org/10.1111/jpy.13004 van den Hoff, J and Bell, E and Whittock, L, Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae), Journal of Phycology, 56, (4) pp. 1028-1038. ISSN 0022-3646 (2020) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/32289881 http://ecite.utas.edu.au/143189 Biological Sciences Evolutionary biology Animal systematics and taxonomy Refereed Article PeerReviewed 2020 ftunivtasecite https://doi.org/10.1111/jpy.13004 2021-11-22T23:17:57Z 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 eCite UTAS (University of Tasmania) 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 |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Evolutionary biology Animal systematics and taxonomy |
spellingShingle |
Biological Sciences Evolutionary biology Animal systematics and taxonomy van den Hoff, J Bell, E Whittock, L Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae) |
topic_facet |
Biological Sciences Evolutionary biology Animal systematics and taxonomy |
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. |
format |
Article in Journal/Newspaper |
author |
van den Hoff, J Bell, E Whittock, L |
author_facet |
van den Hoff, J Bell, E Whittock, L |
author_sort |
van den Hoff, J |
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 |
Blackwell Publishing Inc |
publishDate |
2020 |
url |
https://doi.org/10.1111/jpy.13004 http://www.ncbi.nlm.nih.gov/pubmed/32289881 http://ecite.utas.edu.au/143189 |
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_relation |
http://dx.doi.org/10.1111/jpy.13004 van den Hoff, J and Bell, E and Whittock, L, Dimorphism in the Antarctic cryptophyte Geminigera cryophila (Cryptophyceae), Journal of Phycology, 56, (4) pp. 1028-1038. ISSN 0022-3646 (2020) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/32289881 http://ecite.utas.edu.au/143189 |
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_ |
1766268576046514176 |