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Survey for karlotoxin production in 15 species of gymnodinioid dinoflagellates (Kareniaceae, Dinophyta)1

Citation

Mooney, B and de Salas, MF and Hallegraeff, GM and Place, AR, Survey for karlotoxin production in 15 species of gymnodinioid dinoflagellates (Kareniaceae, Dinophyta)1, Journal of Phycology, 45, (1) pp. 164-175. ISSN 0022-3646 (2009) [Refereed Article]


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The definitive published version is available online at: http://interscience.wiley.com

Official URL: http://interscience.wiley.com

DOI: doi:10.1111/j.1529-8817.2008.00630.x

Abstract

Toxin analysis of 15 species of Kareniaceae revealed the presence of karlotoxin, KmTx 2, in only a single species (Karlodinium veneficum) but with variable activity in strains from the Swan (KmSwanTx 2-1, 2.1 pg cell)1; and KmSwanTx 2-2, 0.53 pg cell)1), Huon (KmHuonTx 2, 0.86 pg cell)1), and Derwent rivers (<0.001 pg cell)1) in Australia. A newly isolated Southern Ocean species, Karlodinium conicum, contained a novel poorly hemolytic karlotoxin analogue (KmconicumTx, 2.8 pg cell)1). The hemolytic potency (HD50%) of the Australian karlotoxins were as follows: KmSwanTx 2-1 (65.9 4.8 ng) and KmSwanTx 2-2 (63.4 3.7 ng), KmHuonTx 2 (343 4.9 ng), and KmconicumTx (>4,000 ng). Species from the closely related genera Takayama (T. helix, T. tasmanica, T. tuberculata), Karenia (K. asterichroma, K. brevis, K. mikimotoi, K. papilionacea, K. umbella), and Karlodinium (Ka. australe, Ka. antarcticum, Ka. ballantinum, Ka. corrugatum, Ka. decipiens) were all consistently negative for karlotoxin production. Brevetoxin (PbTx) was only detected in K. brevis, and hemolytic activity was only observed in Ka. veneficum strains.

Item Details

Item Type:Refereed Article
Keywords:dinoflagellate; hemolytic; Kareniaceae; karlotoxin
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Phycology (incl. Marine Grasses)
Objective Division:Environment
Objective Group:Land and Water Management
Objective Field:Coastal and Estuarine Water Management
Author:Mooney, B (Mr Ben Mooney)
Author:de Salas, MF (Dr Miguel de Salas)
Author:Hallegraeff, GM (Professor Gustaaf Hallegraeff)
ID Code:59942
Year Published:2009
Web of Science® Times Cited:18
Deposited By:Plant Science
Deposited On:2009-12-23
Last Modified:2010-05-21
Downloads:0

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