Ostreopsis fattorussoi sp. nov. (Dinophyceae), a new benthic toxic Ostreopsis species from the eastern Mediterranean Sea

Autor:	Cecilia Totti, Mariachiara Chiantore, Samuela Capellacci, Carmela Dell'Aversano, Valentina Giussani, Stefano Accoroni, Tiziana Romagnoli, Marie Abboud-Abi Saab, Valentina Asnaghi, Antonella Penna, Luciana Tartaglione, Patrizia Ciminiello
Přispěvatelé:	Accoroni, Stefano, Romagnoli, Tiziana, Penna, Antonella, Capellacci, Samuela, Ciminiello, Patrizia, Dell'Aversano, Carmela, Tartaglione, Luciana, Abboud Abi Saab, Marie, Giussani, Valentina, Asnaghi, Valentina, Chiantore, Mariachiara, Totti, Cecilia
Rok vydání:	2016
Předmět:	benthic dinoflagellates harmful algae Mediterranean Sea nutrients Ostreopsis ova- toxins palytoxins phylogeny taxonomy 0106 biological sciences Mediterranean climate ovatoxins Plant Science 010501 environmental sciences Aquatic Science 01 natural sciences Benthic dinoflagellate Epitheca Mediterranean sea DNA Algal Species Specificity Phylogenetics Botany Harmful algae Lebanon Phylogeny 0105 earth and related environmental sciences Taxonomy Palytoxin biology 010604 marine biology & hydrobiology Ostreopsi Dinoflagellate Sequence Analysis DNA biology.organism_classification Benthic zone Cyprus Dinoflagellida Taxonomy (biology) Ovatoxin Dinophyceae Nutrient
Zdroj:	Journal of phycology. 52(6)
ISSN:	1529-8817
Popis:	The new benthic toxic dinoflagellate Ostreopsis fattorussoi sp. nov. is described from eastern Mediterranean Sea Lebanon and Cyprus coasts, supported by morphological and molecular data. The plate formula, Po, 3’, 7’’, 6c, 7s, 5’’’, 2’’’’, is typical for the Ostreopsis genus. It differs from all other Ostreopsis species in that i) the curved suture between plates 1’ and 3’ makes them approximately hexagonal, ii) the 1’ plate lies in the left-half of the epitheca and is obliquely orientated leading to a characteristic shape of plate 6’’. The round thecal pores are bigger than the other two Mediterranean species (O. cf. ovata and O. cf. siamensis). O. fattorussoi is among the smallest species of the genus (DV: 60.07±5.63 μm, AP: 25.66±2.97 μm, W: 39.81±5.05 μm) along with O. ovata. Phylogenetic analyses based on the LSU and ITS rDNA shows that O. fattorussoi belongs to the Atlantic/Mediterranean Ostreopsis spp. clade separated from the other Ostreopsis species. O. fattorussoi produces OVTX-a and structural isomers OVTX-d and –e, O. cf. ovata is the only other species of this genus known to produce these toxins. The Lebanese O. fattorussoi did not produce the new palytoxin-like compounds (ovatoxin-i, ovatoxin-j1, ovatoxin-j2, and ovatoxin-k) that were previously found in O. fattorussoi from Cyprus. The toxin content was in the range of 0.28-0.94 pg. cell−1. In Lebanon coast, O. fattorussoi was recorded throughout the year 2015 (temperature range 18-31.5 °C), with peaks in June and August. This article is protected by copyright. All rights reserved.
Databáze:	OpenAIRE
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