Phylogenomic analysis of pseudocryptic diversity reveals the new genus Deltalsia (Rhodomelaceae, Rhodophyta)

Pilar Díaz-Tapia; Iván Rodríguez‐Buján; Christine A. Maggs; Heroen Verbruggen

doi:10.1111/jpy.13311

journal article Open Access Jan 02, 2023

Phylogenomic analysis of pseudocryptic diversity reveals the new genus Deltalsia (Rhodomelaceae, Rhodophyta)

Pilar Díaz-Tapia

Iván Rodríguez‐Buján

Christine A. Maggs

Heroen Verbruggen

Journal of Phycology Vol. 59 No. 1 pp. 264-276 · Wiley

View at Publisher Save 10.1111/jpy.13311

Abstract

Molecular analyses, in combination with morphological studies, provide invaluable tools for delineating red algal taxa. However, molecular datasets are incomplete and taxonomic revisions are often required once additional species or populations are sequenced. The small red alga Conferva parasitica was described from the British Isles in 1762 and then reported from other parts of Europe. Conferva parasitica was traditionally included in the genus Pterosiphonia (type species P. cloiophylla in Schmitz and Falkenberg 1897), based on its morphological characters, and later transferred to Symphyocladia and finally to Symphyocladiella using molecular data from an Iberian specimen. However, although morphological differences have been observed between specimens of Symphyocladiella parasitica from northern and southern Europe they have yet to be investigated in a phylogenetic context. In this study, we collected specimens from both regions, studied their morphology and analyzed rbcL and cox1 DNA sequences. We determined the phylogenetic position of a British specimen using a phylogenomic approach based on mitochondrial and plastid genomes. Northern and southern European populations attributed to S. parasitica represent different species. Symphyocladiella arecina sp. nov. is proposed for specimens from southern Europe, but British specimens were resolved as a distant sister lineage to the morphologically distinctive Amplisiphonia, so we propose the new genus Deltalsia for this species. Our study highlights the relevance of using materials collected close to the type localities for taxonomic reassessments, and showcases the utility of genome‐based phylogenies for resolving classification issues in the red algae.

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Metrics

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Citations

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References

Details

Published: Jan 02, 2023
Vol/Issue: 59(1)
Pages: 264-276
License: View

Authors

P

Pilar Díaz-Tapia

Coastal Biology Research Group, Faculty of Sciences and Centre for Advanced Scientific Research (CICA) University of A Coruña 15071 A Coruña Spain; Instituto Español de Oceanografía (IEO‐CSIC) Centro Oceanográfico de A Coruña Paseo Marítimo Alcalde Francisco Vázquez, 10 15001 A Coruña Spain

I

Iván Rodríguez‐Buján

Coastal Biology Research Group, Faculty of Sciences and Centre for Advanced Scientific Research (CICA) University of A Coruña 15071 A Coruña Spain

C

Christine A. Maggs

Queen's University Marine Laboratory Portaferry Newtownards BT22 1PF UK

H

Heroen Verbruggen

School of BioSciences University of Melbourne Victoria 3010 Australia

Funding

Xunta de Galicia Award: 03IN858A2019‐1630129

Australian Biological Resources Study Award: 4‐G046WSD

Cite This Article

Pilar Díaz-Tapia, Iván Rodríguez‐Buján, Christine A. Maggs, et al. (2023). Phylogenomic analysis of pseudocryptic diversity reveals the new genus Deltalsia (Rhodomelaceae, Rhodophyta). Journal of Phycology, 59(1), 264-276. https://doi.org/10.1111/jpy.13311

Phylogenomic analysis of pseudocryptic diversity reveals the new genus Deltalsia (Rhodomelaceae, Rhodophyta)

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