ArticleBiometals : an international journal on the role of metal ions in biology, biochemistry, and medicine2022
The effect of iron on Chilean Alexandrium catenella growth and paralytic shellfish toxin production as related to algal blooms.
Article in Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 3 citations in OpenAlex.
- Iron (III) emissions from seawater desalination plants: a new, hitherto overlooked contribution to the iron cycle in coastal seas?Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026Review
- Review
- Temperature-Driven Intraspecific Diversity in Paralytic Shellfish Toxin Profiles of the Dinoflagellate Alexandrium pacificum and Intragenic Variation in the Saxitoxin Biosynthetic Gene, sxtA4.Microbial ecology · 2025Article
- Review
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Authors and funding
6 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The dinoflagellate Alexandrium catenella is a well-known paralytic shellfish toxin producer that forms harmful algal blooms (HABs) worldwide. Blooms of this species have repeatedly brought severe ecological and economic impacts to Chile, especially in the southern region, where the shellfish and salmon industries are world-famous. The mechanisms of such HABs have been intensively studied but are still unclear. Nutrient overloading is one of the often-discussed drivers for HABs. The present study used the A. catenella strain isolated from southern Chile to investigate how iron conditions could affect their growth and toxin production as related to HAB. Our results showed that an optimum concentration of iron was pivotal for proper A. catenella growth. Thus, while excess iron exerted a toxic effect, low iron media led to iron insufficiency and growth inhibition. In addition, the study shows that the degree of paralytic shellfish toxin production by A. catenella varied depending on the iron concentration in the culture media. The A. catenella strain from southern Chile produced GTX1-4 exclusively in the fmol cell
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