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Comparative Toxicity of the Phytotoxins (8R,16R)-(−)-Pyrenophorin and (5S,8R,13S,16R)-(−)-Pyrenophorol on Aquatic Organisms

Abstract

The acute toxicities of the fungal phytotoxins (8R,16R)-(−)-pyrenophorin and (5S,8R,13S,16R)-(−)-pyrenophorol on Vibrio fischeri, Oscillatoria perornata, Pseudokirchneriella subcapitata, Lemna minor and Artemia fransiscana were evaluated. (8R,16R)-(−)-pyrenophorin was more toxic than (5S,8R,13S,16R)-(−)-pyrenophorol to V. fischeri, O. perornata, L. minor and A. fransiscana. The highest acute toxicity of (8R,16R)-(−)-pyrenophorin was exhibited on V. fischeri (5 min median effective concentration of 3.57 M 10−5) whereas the corresponding value for (5S,8R,13S,16R)-(−)-pyrenophorol was 801 M 10−5. P. subcapitata exhibited a lack of sensitivity (median inhibitory concentration of >10 M 10−5) to both phytotoxins.

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Correspondence to M. Chrysayi-Tokousbalides.

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Chrysayi-Tokousbalides, M., Machera, K., Kyriakopoulou, K. et al. Comparative Toxicity of the Phytotoxins (8R,16R)-(−)-Pyrenophorin and (5S,8R,13S,16R)-(−)-Pyrenophorol on Aquatic Organisms. Bull Environ Contam Toxicol 79, 499–503 (2007). https://doi.org/10.1007/s00128-007-9223-6

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Keywords

  • Phytotoxin selectivity
  • Aquatic organisms