| Abstract | Radicilingua Papenfuss and Calonitophyllum Aregood are two small genera of the family Delesseriaceae that consist of only three and one taxonomically accepted species, respectively. The type species of these genera, Radicilingua thy-sanorhizans from England and Calonitophyllum medium from the Americas, are morphologically very similar, with the only recognized differences being vein size and procarp development. To date, only other two species were recognized inside the genus Radicilingua: R. adriatica and R. reptans. In this study, we analysed specimens of Radicilingua collected in the Adriatic and Ionian Sea (Mediterranean), including a syntype locality of R. adriatica (Trieste, northern Adriatic Sea), alongside material from near the type locality of R. thysanorhizans (Torpoint, Cornwall, UK). The sequences of the rbcL-5P gene fragment here produced represent the first molecular data available for the genus Radicilingua. Phylogenetic reconstruction showed that the specimens from the Adriatic and Ionian Seas were genetically distinct from the Atlantic R. thysanorhizans, even if morphologically overlapping with this species. A detailed morphological descrip-tion of the Mediterranean specimens, together with an accurate literature search, suggested that they were distinct also from R. adriatica and R. reptans. For these reasons, a new species was here described to encompass the Mediterranean specimens investigated in this study: R. mediterranea Wolf, Sciuto & Sfriso. Moreover, in the rbcL-5P tree, sequences of the genera Radicilingua and Calonitophyllum grouped in a well-supported clade, distinct from the other genera of the subfamily Nitophylloideae, leading us to propose that Calonitophyllum medium should be transferred to Radicilingua. |
| Text | 461417 2021 10.4490/algae.2021.36.7.18 Scopus 2 s2.0 85116382549 Calonitophyllum Delesseriaceae Radicilingua media comb. nov. Radicilingua mediterranean sp.nov. rbcL systematics Merging the cryptic genera radicilingua and calonitophyllum Delesseriaceae, rhodophyta Molecular phylogeny and taxonomic revision Wolf M.A.; Sciuto K.; Maggs C.A.; Petrocelli A.; Cecere E.; Buosi A.; Sfriso A. Department of Environmental Sciences, Informatics and Statistics, Ca Foscari University of Venice, Via Torino 155, Venice, 30172, Department of Environmental Sciences, Informatics and Statistics, Ca Foscari University of Venice, Via Torino 155, 30172, Venice, Italy, , Italy; Queen s University, Marine Laboratory, Portaferry, Newtownards, BT22 1PF, Queen s University, Marine Laboratory, Portaferry, Newtownards, BT22 1PF, UK, , United Kingdom; Institute of Water Research IRSA , CNR, Talassografico A. Cerruti , via Roma 3, Taranto, 74123, Institute of Water Research IRSA , CNR, Talassografico A. Cerruti , via Roma 3, 74123, Taranto, Italy, , Italy Radicilingua Papenfuss and Calonitophyllum Aregood are two small genera of the family Delesseriaceae that consist of only three and one taxonomically accepted species, respectively. The type species of these genera, Radicilingua thy sanorhizans from England and Calonitophyllum medium from the Americas, are morphologically very similar, with the only recognized differences being vein size and procarp development. To date, only other two species were recognized inside the genus Radicilingua R. adriatica and R. reptans. In this study, we analysed specimens of Radicilingua collected in the Adriatic and Ionian Sea Mediterranean , including a syntype locality of R. adriatica Trieste, northern Adriatic Sea , alongside material from near the type locality of R. thysanorhizans Torpoint, Cornwall, UK . The sequences of the rbcL 5P gene fragment here produced represent the first molecular data available for the genus Radicilingua. Phylogenetic reconstruction showed that the specimens from the Adriatic and Ionian Seas were genetically distinct from the Atlantic R. thysanorhizans, even if morphologically overlapping with this species. A detailed morphological descrip tion of the Mediterranean specimens, together with an accurate literature search, suggested that they were distinct also from R. adriatica and R. reptans. For these reasons, a new species was here described to encompass the Mediterranean specimens investigated in this study R. mediterranea Wolf, Sciuto Sfriso. Moreover, in the rbcL 5P tree, sequences of the genera Radicilingua and Calonitophyllum grouped in a well supported clade, distinct from the other genera of the subfamily Nitophylloideae, leading us to propose that Calonitophyllum medium should be transferred to Radicilingua. 36 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85116382549 origin=inward 18/07/2021 Merging the cryptic genera Radicilingua and Calonitophyllum Delesseriaceae, Rhodophyta molecular phylogeny and taxonomic revision estratto PDF WOLF 2021 Merging the cryptic genera Radicilingua.pdf Articolo in rivista Korean Society of Phycology 1226 2617 Algae Algae Algae antonella.petrocelli PETROCELLI ANTONELLA ester.cecere CECERE ESTER |
