Cell Biology and Toxicology

, Volume 24, Issue 2, pp 159–164 | Cite as

Micronucleus frequency and lipid peroxidation in Allium sativum root tip cells treated with gibberellic acid and cadmium

  • Ayla ÇelikEmail author
  • Serpil Ünyayar
  • Fazilet Özlem Çekiç
  • Ayşin Güzel


Gibberellic acid (GA3) is a very potent hormone whose natural occurrence in plants controls their development. Cadmium is a particularly dangerous pollutant due to its high toxicity and great solubility in water. In this study, the effect of GA3 on Allium sativum root tip cells was investigated in the presence of cadmium. A. sativum root tip cells were exposed to CdNO3 (50, 100, 200 μM), GA3 (10-3 M), both CdNO3 and GA3. Cytogenetic analyses were performed as micronucleus (MN) assay and mitotic index (MI). Lipid peroxidation analysis was also performed in A. sativum root tip cells for determination of membrane damage. MN exhibited a dose-dependent increase in Cd treatments in A. sativum. GA3 significantly reduced the effect of Cd on the MN frequency. MN was observed in GA3 and GA3 + 50 μm Cd treatments at very low frequency. MI slightly decreased in GA3 and GA3 + Cd treatments. MI decreased more in high concentrations of Cd than combined GA3 + Cd treatments. The high concentrations of cadmium induce MN, lipid peroxidation and lead to genotoxicity in A. sativum. Current work reveals that the effect of Cd on genotoxicity can be partially restored with GA3 application.


Lipid peroxidation Allium sativum Gibberellic acid Cadmium Micronucleus 


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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Ayla Çelik
    • 1
    • 2
    Email author
  • Serpil Ünyayar
    • 1
  • Fazilet Özlem Çekiç
    • 1
  • Ayşin Güzel
    • 1
  1. 1.Faculty of Science and Art, Department of BiologyMersin UniversityMersinTurkey
  2. 2.Faculty of Science and Letters, Department of BiologyMersin UniversityMersinTurkey

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