Biological responses of a non-target aquatic plant (Nasturtium officinale) to the herbicide, tribenuron-methyl


DUMAN F. , UREY E., TEMİZGÜL R. , BOZOK F.

WEED BIOLOGY AND MANAGEMENT, cilt.10, ss.81-90, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 10 Konu: 2
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1111/j.1445-6664.2010.00372.x
  • Dergi Adı: WEED BIOLOGY AND MANAGEMENT
  • Sayfa Sayısı: ss.81-90

Özet

To assess its response to the herbicide, tribenuron-methyl, samples of Nasturtium officinale were exposed to 0, 0.01, 0.05, 0.1, and 0.5 mg L-1 of tribenuron-methyl for 1, 2, 4 and 7 days. The influence of this herbicide on the relative growth rate, electrolyte leakage, lipid peroxidation, photosynthetic pigmentation, protein content, and performance of anti-oxidant enzymes, such as superoxide dismutase (SOD), catalase, and ascorbate peroxidase (APX), was examined. The results indicated that tribenuron-methyl, applied at 0.5 mg L-1, affected plant growth negatively. It also was determined that chlorophyll a is the most responsive photosynthetic pigment to tribenuron-methyl exposure. Under stress conditions, the anti-oxidant enzymes were up-regulated compared to the control. The SOD activity was significantly stimulated, while the activity of APX was inhibited. A significant correlation was found between lipid peroxidation and SOD activity. The exposure period and herbicide concentration had significant effects on the biological responses against tribenuron-methyl stress. These results may be useful for clarifying the effect of herbicides on non-target aquatic plants.