The effect of iron on Chilean Alexandrium catenella growth and paralytic shellfish toxin production as related to algal blooms

© 2021. The Author(s)..

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-1 scale. Based on these findings, we suggest that including iron and paralytic shellfish toxin measurements in the fields can improve the current HAB monitoring and contribute to an understanding of A. catenella bloom dynamics in Chile.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:35

Enthalten in:

Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine - 35(2022), 1 vom: 30. Feb., Seite 39-51

Sprache:

Englisch

Beteiligte Personen:

Yarimizu, Kyoko [VerfasserIn]
Mardones, Jorge I [VerfasserIn]
Paredes-Mella, Javier [VerfasserIn]
Norambuena-Subiabre, Luis [VerfasserIn]
Carrano, Carl J [VerfasserIn]
Maruyama, Fumito [VerfasserIn]

Links:

Volltext

Themen:

Alexandrium catenella
E1UOL152H7
Harmful algal bloom (HAB)
Iron
Journal Article
Paralytic shellfish toxin (PST)
Research Support, Non-U.S. Gov't
Trace metal

Anmerkungen:

Date Completed 05.05.2022

Date Revised 05.05.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s10534-021-00349-2

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM332551679