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Paralytic shellfish toxin production by the dinoflagellate Alexandrium pacificum (Chinhae Bay, Korea) in axenic, nutrient-limited chemostat cultures and nutrient-enriched batch cultures

Title
Paralytic shellfish toxin production by the dinoflagellate Alexandrium pacificum (Chinhae Bay, Korea) in axenic, nutrient-limited chemostat cultures and nutrient-enriched batch cultures
Author
김백호
Keywords
Alexandrium pacificum; Batch cultures; Chemostat; Dinoflagellate; Nutrient enrichment and limitation; PSP toxin
Issue Date
2016-03
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
MARINE POLLUTION BULLETIN, v. 104, NO 1-2, Page. 34-43
Abstract
Blooms of Alexandrium pacificum (formerly Alexandrium tamarense) are common in Chinhae Bay (Korea), presumably linked to anthropogenic eutrophication. Here we examine PSP toxin content and composition in axenic chemostat and batch cultures of A. pacificum using growth conditions that differed according to dilution rate, nutrient limitations, and enrichments. Phosphate (P)-limited cells in chemostat cultures had higher toxin content and a toxin composition that differed from that of nitrogen (N)-limited cells at the highest growth rates. Therefore, toxin composition changes do occur in axenic cultures of A. pacificum following extended growth under steady state conditions. In nutrient -limited batch cultures that received N and P enrichment, the N-enriched cultures showed a more diverse toxin profile than the P-enriched cells; the toxin content of N-enriched cells was lower than in the P-enriched cultures. We infer the following order for the biosynthesis of individual toxins: C1, C2 > GTX3 > GTX1 > neoSTX. (C) 2016 Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0025326X16300558?via%3Dihubhttp://hdl.handle.net/20.500.11754/34887
ISSN
0025-326X; 1879-3363
DOI
10.1016/j.marpolbul.2016.01.057
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > LIFE SCIENCE(생명과학과) > Articles
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