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Strong anti-microtubule action of amiprophos-methyl (APM) inMicrasterias

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Summary

The new organophosphorus herbicide amiprophos-methyl [APM; O-methyl-O-(4-methyl-6-nitrophenyl)-N-isopropyl-phosphorothioamidate] inhibits the postmitotic migration of the nucleus and the chloroplast inMicrasterias denticulata Bréb. at concentrations of 10−3 to 10−60/0. The results demonstrate a very strong and specific anti-microtubule activity in the alga by APM. The anatomy of the roots of wheat germinated in 3×10−30/0 APM demonstrates that the microtubular system of higher plant cells is equally disrupted. The basic metabolic reactions of plants cells are only inhibited at concentrations above 10−5 M.

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Author notes

  1. O. Kiermayer

    Present address: Botanisches Institut der Universität Salzburg, Austria

  2. C. Fedtke

    Present address: Pflanzenschutz Anwendungstechnik, Biologische Forschung, Bayer AG, Leverkusen, Germany

Authors and Affiliations

  1. Botanisches Institut der Universität Salzburg, Austria

    C. Fedtke

  2. Pflanzenschutz Anwendungstechnik, Biologische Forschung, Bayer AG, Leverkusen, Germany

    O. Kiermayer

Authors
  1. O. Kiermayer
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  2. C. Fedtke
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Kiermayer, O., Fedtke, C. Strong anti-microtubule action of amiprophos-methyl (APM) inMicrasterias . Protoplasma 92, 163–166 (1977). https://doi.org/10.1007/BF01280208

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  • DOI: https://doi.org/10.1007/BF01280208

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