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111 results on '"Sciuto, Katia"'

17. 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

Author

Sciuto, Katia, primary, Moschin, Emanuela, additional, Alongi, Giuseppina, additional, Cecchetto, Matteo, additional, Schiaparelli, Stefano, additional, Caragnano, Annalisa, additional, Rindi, Fabio, additional, and Moro, Isabella, additional

Published
2021
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18. Antarctic coastal nanoplankton dynamics revealed by metabarcoding of desalination plant filters: Detection of short-term events and implications for routine monitoring

Author

Cecchetto, Matteo, primary, Di Cesare, Andrea, additional, Eckert, Ester, additional, Fassio, Giulia, additional, Fontaneto, Diego, additional, Moro, Isabella, additional, Oliverio, Marco, additional, Sciuto, Katia, additional, Tassistro, Giovanni, additional, Vezzulli, Luigi, additional, and Schiaparelli, Stefano, additional

Published
2021
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26. A new cryptic species of the unicellular red algal genus Dixoniella(Rhodellophyceae, Proteorhodophytina): Dixoniella giordanoi

Author

Sciuto, Katia, Moschin, Emanuela, Fattore, Nicolò, Morosinotto, Tomas, and Moro, Isabella

Abstract

ABSTRACTDuring samplings aimed at isolating microalgal strains, a coccoid greyish-green alga was collected along the North Adriatic coasts (Mediterranean Sea, Italy) and grown in culture. The microalgal strain (named strain B1A) was then subjected to an integrative taxonomy approach in order to correctly identify it. Morphological and ultrastructural observations and phycobiliprotein content analysis were carried out, as well as molecular analyses based on the 18S rRNA, rbcL, psbA and plastid-encoded 23S rRNA genes. Phylogenetic placement and ultrastructural observations clearly indicated that strain B1A is a member of the red microalgal genus Dixoniella(Rhodellophyceae, Proteorhodophytina) and is distinct from the only species so far described for this taxon. Therefore, a new species was described to encompass the isolate from the North Adriatic Sea and another isolate from Japan (MF-G2), which was phylogenetically related to strain B1A: Dixoniella giordanoi sp. nov.

Published
2021
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27. Coccomyxa cimbrica sp. nov., a green microalga found in association with carnivorous plants of the genus Drosera L.

Author

Sciuto, Katia, Baldan, Barbara, Marcato, Stefania, and Moro, Isabella

Subjects
*CARNIVOROUS plants, *PLANT communities, *MARINE fungi, *PHENOTYPIC plasticity, *SPECIES, *GINKGO
Abstract

Coccomyxa Schmidle (Trebouxiophyceae, Chlorophyta) is a genus of green microalgae that has worldwide distribution, with representatives found in a broad range of terrestrial and aquatic ecosystems. Members of this taxon can be free-living and/or associated with other organisms, establishing different types of relationships (e.g. parasitic, symbiotic). The most frequent organisms forming associations with Coccomyxa are fungi and marine animals, most importantly mussels. Moreover, there is a well-documented association between a Coccomyxa strain and Gingko biloba and some Coccomyxa-like microalgae have been found in the bark of other trees. Here we describe a green algal strain found in association with carnivorous plants of the genus Drosera L. The systematics of Coccomyxa based only on classical methods is problematic, due to the very simple morphology of the genus and its high phenotypic plasticity. Therefore, the microalga associated with Drosera plants was isolated, maintained in culture and subjected to an integrative taxonomy approach, including morphological, ultrastructural and molecular analyses, along with ecological considerations. Phylogenetic reconstructions based on the rbcL and 18S rRNA genes and molecular data obtained from the ITS2 spacer, including both sequence and secondary structure analyses, showed that the investigated microorganism belonged to a lineage distinct from those sequenced so far. An accurate taxonomic comparison between the microalga associated with Drosera and each of the species already described for the genus Coccomyxa was also carried out, considering morphology, ultrastructure and ecology. The results as a whole allowed us to erect a new species inside the genus Coccomyxa: Coccomyxa cimbrica K.Sciuto, B.Baldan & I.Moro [ABSTRACT FROM AUTHOR]

Published
2019
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30. Molecular and morphological characterisation of Melanothamnus testudinis sp. nov.(Rhodophyta, Rhodomelaceae) and its distinction from Polysiphonia carettia

Author

Serio, Donatella, Furnari, Giovanni, Moro, Isabella, and Sciuto, Katia

Abstract

ABSTRACTThe association between epizoic algae and animals is well known, and turtles are among the animals that most commonly host epibiont communities. The most studied algal component of the epizoic communities found on turtles is represented by diatoms, while other algal taxa, like the Rhodophyta, are less investigated. During a survey started to study the epibionts associated with loggerhead turtles, Caretta caretta, cared for at the WWF Sea Turtle Rescue Center of Lampedusa Island (Sicily, Italy), specimens of Rhodomelaceae (Rhodophyta) were collected for taxonomic investigation. The resulting vegetative, reproductive, and molecular data of those specimens characterised the new species described here as Melanothamnus testudinis sp. nov. We also evaluated the holotype of Polysiphonia carettiaHollenberg, an epibiont of C. carettareported from the Mediterranean Sea. This investigation confirmed the distinction of M. testudinisfrom P. carettiaand suggested that previous Mediterranean and Canarian records of the latter species are probably M. testudinis.

Published
2020
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