Tethysphytum antarcticum gen. et sp. nov. (Hapalidiales, Rhodophyta), a new non-geniculate coralline alga from Terra Nova Bay (Ross Sea, Antarctica): morpho-anatomical characterization and molecular phylogeny
Over the last decade, our knowledge of the phylogenetic and taxonomic diversity of coralline algae has greatly progressed thanks to the use of DNA sequence data. Despite this, in some geographic regions the knowledge of coralline diversity is still incomplete, because it is entirely based on traditi...
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2021
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ftsmithonian:oai:figshare.com:article/14039112 2023-05-15T13:46:29+02:00 Tethysphytum antarcticum gen. et sp. nov. (Hapalidiales, Rhodophyta), a new non-geniculate coralline alga from Terra Nova Bay (Ross Sea, Antarctica): morpho-anatomical characterization and molecular phylogeny Katia Sciuto (6953723) Emanuela Moschin (10149339) Giuseppina Alongi (10149342) Matteo Cecchetto (10149345) Stefano Schiaparelli (3044037) Annalisa Caragnano (8061101) Fabio Rindi (675352) Isabella Moro (6953726) 2021-02-16T11:20:04Z https://doi.org/10.6084/m9.figshare.14039112.v1 unknown https://figshare.com/articles/dataset/_i_Tethysphytum_antarcticum_i_gen_et_sp_nov_Hapalidiales_Rhodophyta_a_new_non-geniculate_coralline_alga_from_Terra_Nova_Bay_Ross_Sea_Antarctica_morpho-anatomical_characterization_and_molecular_phylogeny/14039112 doi:10.6084/m9.figshare.14039112.v1 CC BY 4.0 CC-BY Microbiology Genetics Evolutionary Biology Ecology Marine Biology Plant Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified 18S rRNA Antarctica Hapalidiaceae morpho-anatomy phylogeny psbA rbcL Tethysphytum antarcticum gen. et sp. nov Dataset 2021 ftsmithonian https://doi.org/10.6084/m9.figshare.14039112.v1 2021-02-26T11:22:37Z Over the last decade, our knowledge of the phylogenetic and taxonomic diversity of coralline algae has greatly progressed thanks to the use of DNA sequence data. Despite this, in some geographic regions the knowledge of coralline diversity is still incomplete, because it is entirely based on traditional morpho-anatomical grounds; Antarctica can certainly be included among these regions. During an investigation of the marine phototrophic biodiversity of the Ross Sea, a crustose coralline alga was collected from two sites in Tethys Bay. The alga formed thin crusts adherent to cobbles at ~20 m depth and showed morpho-anatomical features typical of the order Hapalidiales, family Hapalidiaceae (cell fusions, zonate tetrasporangia produced in multiporate conceptacles, and apical plugs). Molecular phylogenies based on the psb A, rbc L and 18S rRNA genes showed that this alga formed a lineage in the family Hapalidiaceae for which a formal assignment at genus level was not yet available. The only other known member of the lineage was a coralline from the Balleny Islands, named as Hapalidiaceae sp. ASG448A, for which psb A and 18S rRNA sequences were deposited in GenBank without identification at genus and species level. Based on our results, we describe this lineage as the new genus Tethysphytum Sciuto, Moschin & Moro, with the single species Tethysphytum antarcticum Sciuto, Moschin & Moro. At present, morpho-anatomical characters do not allow for the discrimination of Tethysphytum from other similar genera of Hapalidiaceae. The discovery of a new genus suggests that the diversity of coralline algae in Antarctica may have been underestimated and that molecular data will be essential for future taxonomic assessments of this group within this region. Dataset Antarc* Antarctica Balleny Islands Ross Sea Unknown Balleny Islands Ross Sea Terra Nova Bay Tethys Bay ENVELOPE(164.067,164.067,-74.683,-74.683) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Microbiology Genetics Evolutionary Biology Ecology Marine Biology Plant Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified 18S rRNA Antarctica Hapalidiaceae morpho-anatomy phylogeny psbA rbcL Tethysphytum antarcticum gen. et sp. nov |
spellingShingle |
Microbiology Genetics Evolutionary Biology Ecology Marine Biology Plant Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified 18S rRNA Antarctica Hapalidiaceae morpho-anatomy phylogeny psbA rbcL Tethysphytum antarcticum gen. et sp. nov Katia Sciuto (6953723) Emanuela Moschin (10149339) Giuseppina Alongi (10149342) Matteo Cecchetto (10149345) Stefano Schiaparelli (3044037) Annalisa Caragnano (8061101) Fabio Rindi (675352) Isabella Moro (6953726) Tethysphytum antarcticum gen. et sp. nov. (Hapalidiales, Rhodophyta), a new non-geniculate coralline alga from Terra Nova Bay (Ross Sea, Antarctica): morpho-anatomical characterization and molecular phylogeny |
topic_facet |
Microbiology Genetics Evolutionary Biology Ecology Marine Biology Plant Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified 18S rRNA Antarctica Hapalidiaceae morpho-anatomy phylogeny psbA rbcL Tethysphytum antarcticum gen. et sp. nov |
description |
Over the last decade, our knowledge of the phylogenetic and taxonomic diversity of coralline algae has greatly progressed thanks to the use of DNA sequence data. Despite this, in some geographic regions the knowledge of coralline diversity is still incomplete, because it is entirely based on traditional morpho-anatomical grounds; Antarctica can certainly be included among these regions. During an investigation of the marine phototrophic biodiversity of the Ross Sea, a crustose coralline alga was collected from two sites in Tethys Bay. The alga formed thin crusts adherent to cobbles at ~20 m depth and showed morpho-anatomical features typical of the order Hapalidiales, family Hapalidiaceae (cell fusions, zonate tetrasporangia produced in multiporate conceptacles, and apical plugs). Molecular phylogenies based on the psb A, rbc L and 18S rRNA genes showed that this alga formed a lineage in the family Hapalidiaceae for which a formal assignment at genus level was not yet available. The only other known member of the lineage was a coralline from the Balleny Islands, named as Hapalidiaceae sp. ASG448A, for which psb A and 18S rRNA sequences were deposited in GenBank without identification at genus and species level. Based on our results, we describe this lineage as the new genus Tethysphytum Sciuto, Moschin & Moro, with the single species Tethysphytum antarcticum Sciuto, Moschin & Moro. At present, morpho-anatomical characters do not allow for the discrimination of Tethysphytum from other similar genera of Hapalidiaceae. The discovery of a new genus suggests that the diversity of coralline algae in Antarctica may have been underestimated and that molecular data will be essential for future taxonomic assessments of this group within this region. |
format |
Dataset |
author |
Katia Sciuto (6953723) Emanuela Moschin (10149339) Giuseppina Alongi (10149342) Matteo Cecchetto (10149345) Stefano Schiaparelli (3044037) Annalisa Caragnano (8061101) Fabio Rindi (675352) Isabella Moro (6953726) |
author_facet |
Katia Sciuto (6953723) Emanuela Moschin (10149339) Giuseppina Alongi (10149342) Matteo Cecchetto (10149345) Stefano Schiaparelli (3044037) Annalisa Caragnano (8061101) Fabio Rindi (675352) Isabella Moro (6953726) |
author_sort |
Katia Sciuto (6953723) |
title |
Tethysphytum antarcticum gen. et sp. nov. (Hapalidiales, Rhodophyta), a new non-geniculate coralline alga from Terra Nova Bay (Ross Sea, Antarctica): morpho-anatomical characterization and molecular phylogeny |
title_short |
Tethysphytum antarcticum gen. et sp. nov. (Hapalidiales, Rhodophyta), a new non-geniculate coralline alga from Terra Nova Bay (Ross Sea, Antarctica): morpho-anatomical characterization and molecular phylogeny |
title_full |
Tethysphytum antarcticum gen. et sp. nov. (Hapalidiales, Rhodophyta), a new non-geniculate coralline alga from Terra Nova Bay (Ross Sea, Antarctica): morpho-anatomical characterization and molecular phylogeny |
title_fullStr |
Tethysphytum antarcticum gen. et sp. nov. (Hapalidiales, Rhodophyta), a new non-geniculate coralline alga from Terra Nova Bay (Ross Sea, Antarctica): morpho-anatomical characterization and molecular phylogeny |
title_full_unstemmed |
Tethysphytum antarcticum gen. et sp. nov. (Hapalidiales, Rhodophyta), a new non-geniculate coralline alga from Terra Nova Bay (Ross Sea, Antarctica): morpho-anatomical characterization and molecular phylogeny |
title_sort |
tethysphytum antarcticum gen. et sp. nov. (hapalidiales, rhodophyta), a new non-geniculate coralline alga from terra nova bay (ross sea, antarctica): morpho-anatomical characterization and molecular phylogeny |
publishDate |
2021 |
url |
https://doi.org/10.6084/m9.figshare.14039112.v1 |
long_lat |
ENVELOPE(164.067,164.067,-74.683,-74.683) |
geographic |
Balleny Islands Ross Sea Terra Nova Bay Tethys Bay |
geographic_facet |
Balleny Islands Ross Sea Terra Nova Bay Tethys Bay |
genre |
Antarc* Antarctica Balleny Islands Ross Sea |
genre_facet |
Antarc* Antarctica Balleny Islands Ross Sea |
op_relation |
https://figshare.com/articles/dataset/_i_Tethysphytum_antarcticum_i_gen_et_sp_nov_Hapalidiales_Rhodophyta_a_new_non-geniculate_coralline_alga_from_Terra_Nova_Bay_Ross_Sea_Antarctica_morpho-anatomical_characterization_and_molecular_phylogeny/14039112 doi:10.6084/m9.figshare.14039112.v1 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.14039112.v1 |
_version_ |
1766243330368208896 |