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Uptake of the cyanobacterial toxin cylindrospermopsin in Brassica vegetables
Citation key Kittler2012
Author Katrin Kittler and Monika Schreiner and Angelika Krumbein and Stefanie Manzei and Matthias Koch and Sascha Rohn and Ronald Maul
Pages 875 - 879
Year 2012
ISSN 0308-8146
DOI 10.1016/j.foodchem.2012.01.107
Journal Food Chemistry
Volume 133
Number 3
Abstract Toxin-producing cyanobacterial species are increasingly being found in freshwater systems. However, literature on the impact of many cyanobacterial toxins on plants is scarce. Cylindrospermosin (CYN), a secondary metabolite of cyanobacteria such as Cylindrospermopsis and Aphanizomenon species, is a potent hepatotoxin and protein synthesis inhibitor. Worryingly, CYN is increasingly found in surface and drinking water worldwide causing human and animal intoxications. Further, exposure of crop plants to CYN by irrigation with contaminated water has already been shown. Therefore, in this study, horticulturally important and highly consumed Brassica species were investigated to determine the level of CYN in the leaves after exposure of the roots to the toxin. Treatment of Brassica oleracea var. sabellica, Brassica juncea, and Sinapis alba under varying experimental conditions showed significant CYN uptake, with CYN levels ranging from 10% to 21% in the leaves compared to the CYN concentration applied to the roots (18–35 µg/l). In seedlings, CYN concentrations of up to 49 µg/g fresh weight were observed. Thus, crop plants irrigated with CYN-containing water may represent a significant source of this toxin within the food chain.
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Head of Chair

Prof. Dr. rer. nat. Ulrich Szewzyk
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Environmental Microbiology
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