Chemical, molecular, and eco-toxicological investigation of Ostreopsis sp. from Cyprus Island: structural insights into four new ovatoxins by LC-HRMS/MS

Tartaglione, Luciana; Mazzeo, Antonia; Forino, Martino; Giussani, Valentina; Capellacci, Samuela; Penna, Antonella; Asnaghi, Valentina; Faimali, Marco; Chiantore, Mariachiara; Yasumoto, Takeshi; Ciminiello, Patrizia

doi:10.1007/s00216-015-9183-3

Cited by 44 publications

(56 citation statements)

References 36 publications

(71 reference statements)

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“…The toxin profile of these strains also matched those of other O. fattorussoi strains from Cyprus (Tartaglione et al. ) and those found in ~40% of the Mediterranean O . cf.…”

Section: Discussionsupporting

confidence: 79%

“…So far, the toxin content of O. fattorussoi strains has occurred in the range of 0.06–2.8 pg · cell −1 (Cyprus strains, Tartaglione et al. and Lebanese strains, this study) which is significantly lower than that of the Mediterranean O . cf.…”

Section: Discussionmentioning

confidence: 54%

“…, Tartaglione et al. ). In this study, we name and describe this new genotype as a new species of Ostreopsis , named O. fattorussoi , by analyzing samples from coasts of Lebanon and Cyprus (Mediterranean Sea).…”

Section: Discussionmentioning

confidence: 99%

“…ovata , adding three new palytoxin‐like compounds to those already identified, i.e., OVTX‐i, OVTX‐j 1 , OVTX‐j 2 , and OVTX‐k (Tartaglione et al. ). This genotype will be described here as a new species.…”

mentioning

confidence: 99%

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

Accoroni

Romagnoli

Penna

et al. 2016

Journal of Phycology

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The new benthic toxic dinoflagellate, Ostreopsis fattorussoi sp. nov., is described from the Eastern Mediterranean Sea, Lebanon and Cyprus coasts, and is 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 internal transcribed spacer rDNA shows that O. fattorussoi belongs to the Atlantic/Mediterranean Ostreopsis spp. clade separated from the other Ostreopsis species. Ostreopsis 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-j , ovatoxin-j , 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 . On the Lebanon coast, O. fattorussoi was recorded throughout the year 2015 (temperature range 18°C-31.5°C), with peaks in June and August.

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“…The toxin profile of these strains also matched those of other O. fattorussoi strains from Cyprus (Tartaglione et al. ) and those found in ~40% of the Mediterranean O . cf.…”

Section: Discussionsupporting

confidence: 79%

Section: Discussionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

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

Accoroni

Romagnoli

Penna

et al. 2016

Journal of Phycology

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“…The number of known palytoxin-like analogues now approaches 20, including the structurally-related ostreocin-D, ovatoxins a–k and isobaric palytoxin [63,64,65,66,67,68,69]. These compounds are able to transfer through the marine food chain and can result in human illnesses through consumption of contaminated seafood.…”

Section: Palytoxinsmentioning

confidence: 99%

Recent Trends in Marine Phycotoxins from Australian Coastal Waters

2017

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Phycotoxins, which are produced by harmful microalgae and bioaccumulate in the marine food web, are of growing concern for Australia. These harmful algae pose a threat to ecosystem and human health, as well as constraining the progress of aquaculture, one of the fastest growing food sectors in the world. With better monitoring, advanced analytical skills and an increase in microalgal expertise, many phycotoxins have been identified in Australian coastal waters in recent years. The most concerning of these toxins are ciguatoxin, paralytic shellfish toxins, okadaic acid and domoic acid, with palytoxin and karlotoxin increasing in significance. The potential for tetrodotoxin, maitotoxin and palytoxin to contaminate seafood is also of concern, warranting future investigation. The largest and most significant toxic bloom in Tasmania in 2012 resulted in an estimated total economic loss of ~AUD$23M, indicating that there is an imperative to improve toxin and organism detection methods, clarify the toxin profiles of species of phytoplankton and carry out both intra- and inter-species toxicity comparisons. Future work also includes the application of rapid, real-time molecular assays for the detection of harmful species and toxin genes. This information, in conjunction with a better understanding of the life histories and ecology of harmful bloom species, may lead to more appropriate management of environmental, health and economic resources.

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Functional significance of phylogeographic structure in a toxic benthic marine microbial eukaryote over a latitudinal gradient along the East Australian Current

Verma

Hughes

Harwood

et al. 2020

Ecology and Evolution

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Genetic diversity in marine microbial eukaryotic populations (protists) drives their ecological success by enabling diverse phenotypes to respond rapidly to changing environmental conditions. Despite enormous population sizes and lack of barriers to gene flow, genetic differentiation that is associated with geographic distance, currents, and environmental gradients has been reported from planktonic protists. However, for benthic protists, which have reduced dispersal opportunities, phylogeography and its phenotypic significance are little known. In recent years, the East Australian Current (EAC) has intensified its southward flow, associated with the tropicalization of temperate waters. Benthic harmful algal species have been increasingly found in south‐eastern Australia. Yet little is known about the potential of these species to adapt or extend their range in relation to changing conditions. Here, we examine genetic diversity and functional niche divergence in a toxic benthic dinoflagellate, Ostreopsis cf. siamensis, along a 1,500 km north–south gradient in southeastern Australia. Sixty‐eight strains were established from eight sampling sites. The study revealed long‐standing genetic diversity among strains established from the northern‐most sites, along with large phenotypic variation in observed physiological traits such as growth rates, cell volume, production of palytoxin‐like compounds, and photophysiological parameters. Strains from the southern populations were more uniform in both genetic and functional traits, and have possibly colonized their habitats more recently. Our study reports significant genetic and functional trait variability in a benthic harmful algal species, indicative of high adaptability, and a possible climate‐driven range extension. The observed high trait variation may facilitate development of harmful algal blooms under dynamic coastal environmental conditions.

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Chemical, molecular, and eco-toxicological investigation of Ostreopsis sp. from Cyprus Island: structural insights into four new ovatoxins by LC-HRMS/MS

Cited by 44 publications

References 36 publications

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

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

Recent Trends in Marine Phycotoxins from Australian Coastal Waters

Functional significance of phylogeographic structure in a toxic benthic marine microbial eukaryote over a latitudinal gradient along the East Australian Current

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