Effects of nutrient limitation on toxin production and composition in the marine dinoflagellate Protogonyaulax tamarensis

1987 ◽  
Vol 96 (1) ◽  
pp. 123-128 ◽  
Author(s):  
G. L. Boyer ◽  
J. J. Sullivan ◽  
R. J. Andersen ◽  
P. J. Harrison ◽  
F. J. R. Taylor
Keyword(s):  
Nutrient Limitation ◽  
Toxin Production ◽  
Marine Dinoflagellate

scholarly journals A Biomass Upscale System for the Marine Dinoflagellate Prorocentrum lima and the Production of Bioactive Lipophilic Toxins

2017 ◽  
Vol 5 (4) ◽  
pp. 479-485 ◽  
Author(s):  
Ioanna Varkitzi ◽  
Kalliopi Pagou ◽  
Christina Pyrgaki ◽  
Ioannis Hatzianestis
Keyword(s):  
Large Scale ◽  
Toxin Production ◽  
Shellfish Poisoning ◽  
Culture Volume ◽  
Prorocentrum Lima ◽  
Marine Dinoflagellate ◽  
Mass Cultures ◽  
Diarrheic Shellfish Poisoning ◽  
Marine Dinoflagellates ◽  
Lipophilic Toxins

Biotechnological applications of toxic marine dinoflagellates include seafood safety and biomedical, pharmaceutical and research purposes of their toxins among other bioproducts and bioactive compounds that they produce. The supply of sufficient quantities of phycotoxins for investigational uses remains in demand. Some of these toxins, available in small amounts, are quite expensive while their chemical synthesis is complex and costly. However, some quantities of these toxins could be produced with mass cultures of the appropriate dinoflagellates, which are however difficult to handle. Prorocentrum lima is a cosmopolitan marine dinoflagellate, which synthesizes toxins that cause a diarrheic syndrome to humans through the consumption of contaminated shellfish and fish (Diarrheic Shellfish Poisoning, DSP). The aim of this study was to design and develop a biomass upscale system for the production of the lipophilic toxins okadaic acid (OA) and dinophysistoxin 1 (DTX1) from the produced biomass of Prorocentrum lima. In our study, P. lima was grown in large scale semi-continuous cultures under controlled laboratory conditions. The maximum biomass produced was 20690 cells/mL. Maximum toxin production was 63.66 ng/mL for OA and 8.07 ng/mL for DTX1. Toxin quota in P. lima cells was 88.7% OA and 11.3% DTX1. The produced culture volume was 300 L and the total volume capacity of the upscale system could reach 500 L.Int. J. Appl. Sci. Biotechnol. Vol 5(4): 479-485

Nutrient limitation dynamics of western lake erie cyanoHAB biomass and toxin production

2021 ◽  
Author(s):  
Barnard Malcolm ◽  
Justin Chaffin ◽  
Haley Plaas ◽  
Greg Boyer ◽  
Bofan Wei ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Lake Erie ◽  
Toxin Production ◽  
Western Lake ◽  
Western Lake Erie

Influence of predator-prey evolutionary history, chemical alarm-cues, and feeding selection on induction of toxin production in a marine dinoflagellate

2015 ◽  
Vol 60 (1) ◽  
pp. 318-328 ◽  
Author(s):  
Christina D. Senft-Batoh ◽  
Hans G. Dam ◽  
Sandra E. Shumway ◽  
Gary H. Wikfors ◽  
Carl D. Schlichting
Keyword(s):  
Evolutionary History ◽  
Toxin Production ◽  
Alarm Cues ◽  
Predator Prey ◽  
Marine Dinoflagellate ◽  
Chemical Alarm Cues

scholarly journals Roles of Nutrient Limitation on Western Lake Erie CyanoHAB Toxin Production

Toxins ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 47
Author(s):  
Malcolm A. Barnard ◽  
Justin D. Chaffin ◽  
Haley E. Plaas ◽  
Gregory L. Boyer ◽  
Bofan Wei ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Biomass Production ◽  
Lake Erie ◽  
Harmful Algal Bloom ◽  
Toxin Production ◽  
Western Basin ◽  
N Limitation ◽  
P Limitation ◽  
Western Lake ◽  
Western Lake Erie

Cyanobacterial harmful algal bloom (CyanoHAB) proliferation is a global problem impacting ecosystem and human health. Western Lake Erie (WLE) typically endures two highly toxic CyanoHABs during summer: a Microcystis spp. bloom in Maumee Bay that extends throughout the western basin, and a Planktothrix spp. bloom in Sandusky Bay. Recently, the USA and Canada agreed to a 40% phosphorus (P) load reduction to lessen the severity of the WLE blooms. To investigate phosphorus and nitrogen (N) limitation of biomass and toxin production in WLE CyanoHABs, we conducted in situ nutrient addition and 40% dilution microcosm bioassays in June and August 2019. During the June Sandusky Bay bloom, biomass production as well as hepatotoxic microcystin and neurotoxic anatoxin production were N and P co-limited with microcystin production becoming nutrient deplete under 40% dilution. During August, the Maumee Bay bloom produced microcystin under nutrient repletion with slight induced P limitation under 40% dilution, and the Sandusky Bay bloom produced anatoxin under N limitation in both dilution treatments. The results demonstrate the importance of nutrient limitation effects on microcystin and anatoxin production. To properly combat cyanotoxin and cyanobacterial biomass production in WLE, both N and P reduction efforts should be implemented in its watershed.

New polyketides from marine dinoflagellate Amphidinium sp.

Planta Medica ◽  
2014 ◽  
Vol 80 (10) ◽  
Author(s):  
T Kubota ◽  
T Iwai ◽  
J Kobayashi
Keyword(s):  
Marine Dinoflagellate
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