Cytogenic effects of Fusarium mycotoxins on root tip cells of rye (Secale cereale L.) wheat (Triticum aestivum L.) and field bean (Vicia faba L. var. minor)
1997
Packa, D. (University of Agriculture and Technology, Olsztyn (Poland). Dept. of Plant Breeding and Seed Production)
The effects of fusarial toxins: DAS, T-2, DON, 3 Ac-DON, MON and ZEA, on actively dividing root tip cells of rye, wheat and field bean were investigated. Three concentrations: 1.5 and 10 ug/ml were applied for 24 hours. Nuclei and chromosomes were stained using the Feulgens method. It has been found that trichothecene mycotoxins had a profound effect on mitosis, as they decreased the mitotic index, produced excessive condensation of pro- and metaphase chromosomes, C-metaphases and C-anaphases, and caused an accumulation of metaphases. The main effect of trichothecene mycotoxins, probably caused via their influence on protein synthesis, was abnormal functioning of the miotic spindle
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