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Some aspects of the phytotoxic action of fusaric acid on primary Ricinus roots

Author

Listed:
  • J. Pavlovkin

    (Institute of Botany, Slovak Academy of Sciences, Bratislava, Slovakia)

  • I. Mistrík

    (Institute of Botany, Slovak Academy of Sciences, Bratislava, Slovakia)

  • M. Prokop

    (Institute of Botany, Slovak Academy of Sciences, Bratislava, Slovakia)

Abstract

Fusaric acid, at a concentration of 1mM induced at pH 5.5 an early hyperpolarisation was followed by a marked depolarisation of membrane potential difference. During this time increased electrolyte leakage from the primary Ricinus roots was determined. At higher pH values (6.5 and 8) the depolarisation caused by fusaric acid was immediate without hyperpolarisation observed at pH 5.5. Simultaneous exposure of the roots to P-ATPase activator fusicoccin and fusaric acid (pH 6.5) diminished the hyperpolarising effect of fusicoccin. The present results suggest that the dissociated form of fusaric acid does directly affect particular cell targets (plasmalemma, mitochondria) and viability of root cells decreased with the time of exposure and concentration of fusaric acid.

Suggested Citation

  • J. Pavlovkin & I. Mistrík & M. Prokop, 2004. "Some aspects of the phytotoxic action of fusaric acid on primary Ricinus roots," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 50(9), pages 397-401.
    • Handle: RePEc:caa:jnlpse:v:50:y:2004:i:9:id:4050-pse
    DOI: 10.17221/4050-PSE
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    Citations

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    Cited by:

    1. Antónia Šrobárová & Štefan EGED & Jaime TEIXEIRA DA SILVA & Alberto Ritieni & Antonello Santini, 2009. "The use of Bacillus subtilis for screening fusaric acid production by Fusarium spp," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 27(3), pages 203-209.
    2. J. Pavlovkin & I. Mistríková & K. Jašková & L. Tamás, 2012. "Impact of beauvericin on membrane properties of young initial leaves of maize with different susceptibility to Fusarium," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(5), pages 205-210.

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