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Growth and Antioxidant System of Escherichia coli in Response to Microcystin-RR


Microcystins are a kind of cyclic hepatoxins produced by many species of cyanobacteria. The toxic effects of microcystins on animals and plants have been well studied. However, the reports about the effects of microcystins on microbial cells are very limited. In present paper, Escherichia coli was undertaken to determine the effect of microcystin-RR. These results suggested that microcystin-RR could prolong the growth of E. coli when exposed to high concentrations of microcystin-RR and cause the accumulation of ROS and induce the oxidant stress for a short time. The antioxidant system protects E. coli from oxidative damage.

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This research was financially supported by the National Basic Research programs of China (2002 CB 412306, 2003CB716801) and a National Hi-Tech Project of China (2005AA601010).

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Correspondence to Y. D. Liu.

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Yang, C.Y., Wang, W.B., Li, D.H. et al. Growth and Antioxidant System of Escherichia coli in Response to Microcystin-RR. Bull Environ Contam Toxicol 81, 427–431 (2008).

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  • Microcystin-RR
  • Escherichia coli
  • Growth
  • Antioxidant system