Toxic water bloom of blue-green algae (Cyanophyta): Biological and chemical characteristics

Biological and chemical characteristics of toxins, mainly those found in Microcystis, were reviewed, since water blooms of Microcystis have occurred in most eutrophic lakes and ponds over a longer period of time than those of any other blue-green algae. The toxins in Microcystis (microcystins) are c...

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Bibliographic Details
Published inRikusuigaku zasshi Vol. 54; no. 3; pp. 225 - 243
Main Authors Watanabe, M.F. (Tokyo-to. Research Inst. for Environmental Protection (Japan)), Harada, K
Format Journal Article
LanguageJapanese
Published 01.07.1993
Subjects
ANABAENA
CYANOPHYTA
Freshwater
MICROCYSTIS
PLANKTON BLOOMS
PROLIFERACION DE PLANCTON
PROLIFERATION PLANCTONIQUE
TOXINAS
TOXINE
TOXINS
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Summary:Biological and chemical characteristics of toxins, mainly those found in Microcystis, were reviewed, since water blooms of Microcystis have occurred in most eutrophic lakes and ponds over a longer period of time than those of any other blue-green algae. The toxins in Microcystis (microcystins) are cyclic heptapeptides composed of two L-amino acids and five common ones with a molecular weight of around 1000. Microcystins RR (the pair of amono acids, arginine-arginine), YR (tyrosine-arginine) and LR (leucine and arginine), were the main components detected in the strains and natural samples of Microcystis in Japan. These three kinds of toxins were contained in the strains of M. viridis and L group of M. aeruginosa. The liver is the main target organ of microcystins.
Bibliography:T01
F60
9507803
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ISSN:0021-5104