title: Genotoxic effects of the insecticide cypermethrin on the root meristem cells of sunflowers (Helianthus annuus L.).
abstract: In this study, the genotoxic effects of the insecticide cypermethrin on the root meristem cells of sunflowers (Helianthus annuus L.) were investigated. The roots were treated with 10- 25- 50- and 100-ppm concentrations of cypermethrin for 6, 12 and 24 h. The mitotic index and mitotic abnormalities were determined in both control and test groups. The cypermethrin showed a marked mitodepressive action on mitosis. The types of mitotic abnormalities included disturbed metaphase, c-mitosis, stickiness, laggards and chromatid bridges. A pronounced toxic effect was observed at the 50-ppm concentration. Cypermethrin may have genotoxic effects on sunflowers.
authors.affiliation: Department of Biology, Faculty of Sciences and Arts, Karadeniz Technical University, 61080 Trabzon, Turkey. inceer@hotmail.com
authors.forename: Huseyin
authors.initials: H
authors.lastname: Inceer
authors.forename: Sema
authors.initials: S
authors.lastname: Hayirlioglu-Ayaz
authors.forename: Melahat
authors.initials: M
authors.lastname: Ozcan
mesh_terms: D000704:Analysis of Variance; D006368:Helianthus / Q000166:cytology*; D007306:Insecticides / Q000633:toxicity*; D018519:Meristem / Q000166:cytology*; D008938:Mitosis / Q000187:drug effects; D009153:Mutagens / Q000633:toxicity*; D018517:Plant Roots / Q000166:cytology*; D011722:Pyrethrins / Q000633:toxicity*
chemical_list: D007306:Insecticides; D009153:Mutagens; D011722:Pyrethrins; C017160:cypermethrin