| Literature DB >> 25981346 |
Nicholas Fowler1, Carmelo Tomas2, Daniel Baden3, Lisa Campbell4, Andrea Bourdelais5.
Abstract
One of the most widely studied organisms responsible for Harmful Algal Blooms (HABs) is the marine dinoflagellate Karenia brevis. This organism produces neurotoxic compounds known as brevetoxins. A related dinoflagellate, Karenia papilionacea, has been reported to occasionally co-bloom with K. brevis but has received little attention as a possible toxin producing species. Therefore, our aim was to investigate the toxin profile for K. papilionacea. A toxic fraction was identified using a cell based cytotoxicity assay and the toxin was isolated and identified as the ladder frame polyether brevetoxin-2 (PbTx-2) using mass spectrometry (MS) and nuclear magnetic resonance (NMR). Toxin production in K. papilionacea increased in response to hypoosmotic stress, as previously observed in K. brevis. Published by Elsevier Ltd.Entities:
Keywords: Brevetoxin; HAB; Karenia brevis; Karenia papilionacea; Osmotic stress; Toxin isolation
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Year: 2015 PMID: 25981346 DOI: 10.1016/j.toxicon.2015.05.007
Source DB: PubMed Journal: Toxicon ISSN: 0041-0101 Impact factor: 3.033