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International Journal on Algae
Главный редактор: Solomon P. Wasser (open in a new tab)
Управляющий редактор: M.D. Aleinikova (open in a new tab)

Выходит 4 номеров в год

ISSN Печать: 1521-9429

ISSN Онлайн: 1940-4328

SJR: 0.168 SNIP: 0.377 CiteScore™:: 0.6 H-Index: 11

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The Growth Response of Prorocentrum minimum Pavill. (Dinophyta) to Karlotoxin Exposure

Том 16, Выпуск 1, 2014, pp. 95-105
DOI: 10.1615/InterJAlgae.v16.i1.70
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Краткое описание

Extracellular metabolites produced by harmful algae can act as growth-inhibiting agents for other phytoplankton species, influencing species competition and succession and hence affecting structure of the plankton community. Karlodinium veneficum Ballant., a cosmopolitan estuarine dinoflagellate, produces toxic compounds known as karlotoxins that exhibit sterol-dependent, cytotoxic activity and are frequently associated with fish kills. Karlotoxin-sensitive cells tend to have desmethyl sterols as predominant cellular sterols, and karlotoxin-resistant cells have 4-methyl sterols as dominant sterols. The allelopathic effects of karlotoxins on other algae have been described, but the question of whether or not K. veneficum is allelopathic against Prorocentrum minimum, a common co-occurring dinoflagellate, is unknown. We determined the sterol profiles of two different Chesapeake Bay strains (RR4B1 and IB) of P. minimum and also exposed them to different concentrations of karlotoxin extracted from K. veneficum cells. The strains, RR4B1 and IB, experienced mortality at high toxin concentrations, i.e., 256 ng mL−1. After 24 hours of exposure, cell counts declined resulting in calculated "negative growth rates" of −1.17 (d−1) for RR4B1 and −0.45 (d−1) for strain IB. This shows that karlotoxin is lethal to P. minimum at high concentrations irrespective of sterol profiles that include substantial quantities of 4-methyl sterols.

ЦИТИРОВАНО В
  1. Jeong Byungkwan, Jeong Eui-Suk, Malazarte Jacqueline, Sin Yongsik, Physiological and Molecular Response of Prorocentrum minimum to Tannic Acid: An Experimental Study to Evaluate the Feasibility of Using Tannic Acid in Controling the Red Tide in a Eutrophic Coastal Water, International Journal of Environmental Research and Public Health, 13, 5, 2016. Crossref

  2. Long Marc, Krock Bernd, Castrec Justine, Tillmann Urban, Unknown Extracellular and Bioactive Metabolites of the Genus Alexandrium: A Review of Overlooked Toxins, Toxins, 13, 12, 2021. Crossref

  3. Wolny Jennifer L., McCollough Carol B., Rosales Detbra S., Pitula Joseph S., Harmful Algal Bloom Species in the St. Martin River: Surveying the Headwaters of Northern Maryland's Coastal Bays, Journal of Coastal Research, 38, 1, 2022. Crossref

  4. Zhou Chengxu, Place Allen R., Yan Xiaojun, Xu Jilin, Luo Qijun, William Ernest, Jiang Ying, Interactions between Karlodinium veneficum and Prorocentrum donghaiense from the East China Sea, Harmful Algae, 49, 2015. Crossref

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