Bio-toxic effect of pyrene on Vallisneria spiralis
Yin, Y.; Sun, Y-Yuan.; Guo, H-Yan.; Wang, X-Rong.
Ying Yong Sheng Tai Xue Bao 18(7): 1528-1533
2007
ISSN/ISBN: 1001-9332 PMID: 17886646 Document Number: 608201
With indoor static simulation test, this paper studied the effects of different concentrations (0. 01, 0. 02, 0. 05, 0. 07 and 0. 1 mg center dot L (-1)) pyrene on the pyrene accumulation, free radical, antioxidant defenses, and the contents of chlorophyll and soluble sugar in Vallisneria spiralls. The results showed that after 10 days exposure to pyrene, V. spiralis leaf could accumulate large amount of pyrene. The free radical generation, peroxidase (POD) activity and malondialdehyde (MDA) content had a persistent increase, but the increment decreased when exposed to higher concentrations ( > 0. 05 mg center dot L (-1)) pyrene. Glutathione S-transferase ( GST) activity and oxidized glutathione ( GSSG) and soluble sugar contents increased with increasing concentration of pyrene, while reduced glutathione ( GSH) and chlorophyll contents were in adverse. It was concluded that V. spiralis Was sensitive to pyrene, and the stress effect would happen at 0. 0 1 mg center dot L (-1) of pyrene.