Molecular, Morphological and Chemical Diversity of Two New Species of Antarctic Diatoms, Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov.
The current study focuses on the biological diversity of two strains of Antarctic diatoms (strains IMA082A and IMA088A) collected and isolated from the Ross Sea (Antarctica) during the XXXIV Italian Antarctic Expedition. Both species presented the typical morphological characters of the genus Craspe...
Published in: | Journal of Marine Science and Engineering |
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Online Access: | https://hdl.handle.net/11577/3473805 https://doi.org/10.3390/jmse10111656 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/3473805 2024-04-14T08:04:38+00:00 Molecular, Morphological and Chemical Diversity of Two New Species of Antarctic Diatoms, Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. Riccardo Trentin Emanuela Moschin André Duarte Lopes Stefano Schiaparelli Luísa Custódio Isabella Moro Trentin, Riccardo Moschin, Emanuela Duarte Lopes, André Schiaparelli, Stefano Custódio, Luísa Moro, Isabella 2022 STAMPA https://hdl.handle.net/11577/3473805 https://doi.org/10.3390/jmse10111656 eng eng MDPI info:eu-repo/semantics/altIdentifier/wos/WOS:000883461000001 volume:10 issue:11 firstpage:1656 lastpage:1656 numberofpages:1 journal:JOURNAL OF MARINE SCIENCE AND ENGINEERING https://hdl.handle.net/11577/3473805 doi:10.3390/jmse10111656 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85141817228 Antarctica biodiversity Ross Sea diatoms Craspedostauros Craspedostauros ineffabilis sp. nov. Craspedostauros zucchellii sp. nov. morphology molecular phylogeny chemical diversity info:eu-repo/semantics/article 2022 ftunivpadovairis https://doi.org/10.3390/jmse10111656 2024-03-21T20:05:26Z The current study focuses on the biological diversity of two strains of Antarctic diatoms (strains IMA082A and IMA088A) collected and isolated from the Ross Sea (Antarctica) during the XXXIV Italian Antarctic Expedition. Both species presented the typical morphological characters of the genus Craspedostauros: cribrate areolae, two “fore-and-aft” chloroplasts and a narrow “stauros”. This classification is congruent with the molecular phylogeny based on the concatenated 18S rDNA-rbcL-psbC alignment, which showed that these algae formed a monophyletic lineage including six taxonomically accepted species of Craspedostauros. Since the study of the evolution of this genus and of others raphe-bearing diatoms with a “stauros” is particularly challenging and their phylogeny is still debated, we tested alternative tree topologies to evaluate the relationships among these taxa. The metabolic fingerprinting approach was implemented for the assessment of the chemical diversity of IMA082A and IMA088A. In conclusion, combining (1) traditional morphological features used in diatoms identification, (2) phylogenetic analyses of the small subunit rDNA (18S rDNA), rbcL and psbC genes, and (3) metabolic fingerprint, we described the strains IMA082A and IMA088A as Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. as new species, respectively. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Padua Research Archive (IRIS - Università degli Studi di Padova) Antarctic Ross Sea Journal of Marine Science and Engineering 10 11 1656 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
Antarctica biodiversity Ross Sea diatoms Craspedostauros Craspedostauros ineffabilis sp. nov. Craspedostauros zucchellii sp. nov. morphology molecular phylogeny chemical diversity |
spellingShingle |
Antarctica biodiversity Ross Sea diatoms Craspedostauros Craspedostauros ineffabilis sp. nov. Craspedostauros zucchellii sp. nov. morphology molecular phylogeny chemical diversity Riccardo Trentin Emanuela Moschin André Duarte Lopes Stefano Schiaparelli Luísa Custódio Isabella Moro Molecular, Morphological and Chemical Diversity of Two New Species of Antarctic Diatoms, Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. |
topic_facet |
Antarctica biodiversity Ross Sea diatoms Craspedostauros Craspedostauros ineffabilis sp. nov. Craspedostauros zucchellii sp. nov. morphology molecular phylogeny chemical diversity |
description |
The current study focuses on the biological diversity of two strains of Antarctic diatoms (strains IMA082A and IMA088A) collected and isolated from the Ross Sea (Antarctica) during the XXXIV Italian Antarctic Expedition. Both species presented the typical morphological characters of the genus Craspedostauros: cribrate areolae, two “fore-and-aft” chloroplasts and a narrow “stauros”. This classification is congruent with the molecular phylogeny based on the concatenated 18S rDNA-rbcL-psbC alignment, which showed that these algae formed a monophyletic lineage including six taxonomically accepted species of Craspedostauros. Since the study of the evolution of this genus and of others raphe-bearing diatoms with a “stauros” is particularly challenging and their phylogeny is still debated, we tested alternative tree topologies to evaluate the relationships among these taxa. The metabolic fingerprinting approach was implemented for the assessment of the chemical diversity of IMA082A and IMA088A. In conclusion, combining (1) traditional morphological features used in diatoms identification, (2) phylogenetic analyses of the small subunit rDNA (18S rDNA), rbcL and psbC genes, and (3) metabolic fingerprint, we described the strains IMA082A and IMA088A as Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. as new species, respectively. |
author2 |
Trentin, Riccardo Moschin, Emanuela Duarte Lopes, André Schiaparelli, Stefano Custódio, Luísa Moro, Isabella |
format |
Article in Journal/Newspaper |
author |
Riccardo Trentin Emanuela Moschin André Duarte Lopes Stefano Schiaparelli Luísa Custódio Isabella Moro |
author_facet |
Riccardo Trentin Emanuela Moschin André Duarte Lopes Stefano Schiaparelli Luísa Custódio Isabella Moro |
author_sort |
Riccardo Trentin |
title |
Molecular, Morphological and Chemical Diversity of Two New Species of Antarctic Diatoms, Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. |
title_short |
Molecular, Morphological and Chemical Diversity of Two New Species of Antarctic Diatoms, Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. |
title_full |
Molecular, Morphological and Chemical Diversity of Two New Species of Antarctic Diatoms, Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. |
title_fullStr |
Molecular, Morphological and Chemical Diversity of Two New Species of Antarctic Diatoms, Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. |
title_full_unstemmed |
Molecular, Morphological and Chemical Diversity of Two New Species of Antarctic Diatoms, Craspedostauros ineffabilis sp. nov. and Craspedostauros zucchellii sp. nov. |
title_sort |
molecular, morphological and chemical diversity of two new species of antarctic diatoms, craspedostauros ineffabilis sp. nov. and craspedostauros zucchellii sp. nov. |
publisher |
MDPI |
publishDate |
2022 |
url |
https://hdl.handle.net/11577/3473805 https://doi.org/10.3390/jmse10111656 |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000883461000001 volume:10 issue:11 firstpage:1656 lastpage:1656 numberofpages:1 journal:JOURNAL OF MARINE SCIENCE AND ENGINEERING https://hdl.handle.net/11577/3473805 doi:10.3390/jmse10111656 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85141817228 |
op_doi |
https://doi.org/10.3390/jmse10111656 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
11 |
container_start_page |
1656 |
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1796301297393074176 |