Direct evidence for toxin production by<i>Pseudo-nitzschia plurisecta</i>(Bacillariophyceae) and extension of its distribution area

Caruana, Amandine; Ayache, Nour; Raimbault, Virginie; Rétho, Michaël; Hervé, Fabienne; Bilien, Gwenaël; Amzil, Zouher; Chomérat, Nicolas

doi:10.1080/09670262.2019.1620342

Cited by 6 publications

(3 citation statements)

References 49 publications

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“…Hasle, 1993, andP. pseudodelicatissima (Hasle) Hasle, 1993 in France (Amzil et al, 2001, Caruana et al, 2019; and P. seriata (Cleve) H.Peragallo, 1899 in Scotland and Iceland (Fehling et al, 2004.…”

Section: Causative Organismmentioning

confidence: 99%

Diversity and regional distribution of harmful algal events along the Atlantic margin of Europe

et al. 2021

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Section: Causative Organismmentioning

confidence: 99%

Diversity and regional distribution of harmful algal events along the Atlantic margin of Europe

et al. 2021

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“…Domoic acid is the primary ASP-causing toxin, with multiple studies assessing DA production by Pseudo-nitzschia . In contrast, there are only a few studies which assess DA isomer production by Pseudo-nitzschia strains: iso-DAs A and B from P. delicatissima , P. multiseries [ 48 ], and P seudo-nitzschia seriata [ 49 ], iso-DA C from P. australis [ 50 , 51 ] and P. subcurvata [ 52 ], and epi-DA and iso-DAs A and D from P. plurisecta [ 53 ]. This is the first study to screen, and report, iso-DA E production by Pseudo-nitzschia strains.…”

Section: Discussionmentioning

confidence: 99%

Update of the Planktonic Diatom Genus Pseudo-nitzschia in Aotearoa New Zealand Coastal Waters: Genetic Diversity and Toxin Production

Nishimura

Murray

Boundy

et al. 2021

Toxins

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Domoic acid (DA) is produced by almost half of the species belonging to the diatom genus Pseudo-nitzschia and causes amnesic shellfish poisoning (ASP). It is, therefore, important to investigate the diversity and toxin production of Pseudo-nitzschia species for ASP risk assessments. Between 2018 and 2020, seawater samples were collected from various sites around Aotearoa New Zealand, and 130 clonal isolates of Pseudo-nitzschia were established. Molecular phylogenetic analysis of partial large subunit ribosomal DNA and/or internal transcribed spacer regions revealed that the isolates were divided into 14 species (Pseudo-nitzschia americana, Pseudo-nitzschia arenysensis, Pseudo-nitzschia australis, Pseudo-nitzschia calliantha, Pseudo-nitzschia cuspidata, Pseudo-nitzschia delicatissima, Pseudo-nitzschia fraudulenta, Pseudo-nitzschia galaxiae, Pseudo-nitzschia hasleana, Pseudo-nitzschia multiseries, Pseudo-nitzschia multistriata, Pseudo-nitzschia plurisecta, Pseudo-nitzschia pungens, and Pseudo-nitzschia cf. subpacifica). The P. delicatissima and P. hasleana strains were further divided into two clades/subclades (I and II). Liquid chromatography-tandem mass spectrometry was used to assess the production of DA and DA isomers by 73 representative strains. The analyses revealed that two (P. australis and P. multiseries) of the 14 species produced DA as a primary analogue, along with several DA isomers. This study is the first geographical distribution record of P. arenysensis, P.cuspidata, P. galaxiae, and P. hasleana in New Zealand coastal waters.

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“…Pseudo-nitzschia is a common member of the diatom community of the French coasts [ 39 ]. Several toxic species have been identified on these coasts [ 8 , 40 , 41 , 42 , 43 , 44 ] among which are P. australis —one of the most toxic species—and P. fraudulenta —a less toxic one [ 45 , 46 ]. Along the French coasts, Pseudo-nitzschia species grow throughout the year with maximum abundance from May to July and in September [ 8 , 39 , 41 , 42 , 44 ].…”

Section: Introductionmentioning

confidence: 99%

Interactions between Filter-Feeding Bivalves and Toxic Diatoms: Influence on the Feeding Behavior of Crassostrea gigas and Pecten maximus and on Toxin Production by Pseudo-nitzschia

Sauvey

Denis

Hégaret

et al. 2021

Toxins

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Among Pseudo-nitzschia species, some produce the neurotoxin domoic acid (DA), a source of serious health problems for marine organisms. Filter-feeding organisms—e.g., bivalves feeding on toxigenic Pseudo-nitzschia spp.—are the main vector of DA in humans. However, little is known about the interactions between bivalves and Pseudo-nitzschia. In this study, we examined the interactions between two juvenile bivalve species—oyster (Crassostrea gigas) and scallop (Pecten maximus)—and two toxic Pseudo-nitzschia species—P. australis and P. fraudulenta. We characterized the influence of (1) diet composition and the Pseudo-nitzschia DA content on the feeding rates of oysters and scallops, and (2) the presence of bivalves on Pseudo-nitzschia toxin production. Both bivalve species fed on P. australis and P. fraudulenta. However, they preferentially filtered the non-toxic Isochrysis galbana compared to Pseudo-nitzschia. The presence of the most toxic P. australis species resulted in a decreased clearance rate in C. gigas. The two bivalve species accumulated DA in their tissues (up to 0.35 × 10−3 and 5.1 × 10−3 µg g−1 for C. gigas and P. maximus, respectively). Most importantly, the presence of bivalves induced an increase in the cellular DA contents of both Pseudo-nitzschia species (up to 58-fold in P. fraudulenta in the presence of C. gigas). This is the first evidence of DA production by Pseudo-nitzschia species stimulated in the presence of filter-feeding bivalves. The results of this study highlight complex interactions that can influence toxin production by Pseudo-nitzschia and accumulation in bivalves. These results will help to better understand the biotic factors that drive DA production by Pseudo-nitzschia and bivalve contamination during Pseudo-nitzschia blooms.

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Direct evidence for toxin production byPseudo-nitzschia plurisecta(Bacillariophyceae) and extension of its distribution area

Cited by 6 publications

References 49 publications

Diversity and regional distribution of harmful algal events along the Atlantic margin of Europe

Diversity and regional distribution of harmful algal events along the Atlantic margin of Europe

Update of the Planktonic Diatom Genus Pseudo-nitzschia in Aotearoa New Zealand Coastal Waters: Genetic Diversity and Toxin Production

Interactions between Filter-Feeding Bivalves and Toxic Diatoms: Influence on the Feeding Behavior of Crassostrea gigas and Pecten maximus and on Toxin Production by Pseudo-nitzschia

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