The investigation of cytotoxic effects of refinery wastewater on root tip cells of Vicia faba L.

被引:0
|
作者
Cavusoglu, Kultigin [1 ]
Yalcin, Emine [1 ]
Ergene, Aysun [2 ]
机构
[1] Giresun Univ, Fac Sci & Art, Dept Biol, TR-28049 Debboy Location, Giresun, Turkey
[2] Kirikkale Univ, Fac Sci & Art, Dept Biol, TR-71450 Yahsihan, Kirikkale, Turkey
来源
JOURNAL OF ENVIRONMENTAL BIOLOGY | 2010年 / 31卷 / 04期
关键词
Cytotoxicity; Heavy metal contamination; Kizilirmak river; Micronucleus assay; Refinery wastewater; Vicia faba L; HEAVY-METAL ACCUMULATION; SEED-GERMINATION; GROWTH; LEAD; RIVER; MAIZE;
D O I
暂无
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The present study was carried out to evaluate the cytotoxic effects of refinery wastewater collected from different stations of the Kizilirmak river on Vicia faba L. root tip cells. For this aim, we used the germination percentage, root length, weight gain and micronucleus (MN) frequency as indicators of cytotoxicity. Additionally to the cytological analysis, DNA analyses were performed in root tips men stems of Vicia faba seeds treated with refinery wastewater. Heavy metal concentrations in the water samples were determined using atomic absorption spectrophotometer (AAS). The concentrations of heavy metals in the water were in the order of Pb>Zn>Fe>Cu>Ni>Cd>Hg. The highest germination percantage was observed in the control group (in proportion as 96%). Heavy metals in the water samples collected from Station I, II and III caused a decrease in the germination percentage as 48, 18 and 30%, respectively The highest root length and weight gain was observed in the control group at the end of the experimental period. The least root length and weight gain was observed in seeds treated with wastewater collected from Station I. In the control group, the weights of all the seeds increased about 4.089 when compared with initial weight. The root lengths of the control seeds were determined as 6.38 cm at the end of the experimental period. The weights of the seeds exposed to wastewaters obtained from Station I, II and III increased about 1.08, 3.03 and 2.01 g according to initial weight, respectively Microscopic examination of V faba root tip meristem cells showed that any example of the MN formation was not seen in the control group. The highest frequency of MN was observed in group treated with wastewater collected from Station land least frequency of MN was observed in group treated with wastewater collected from Station II. It was also observed that the yields of DNA in the seeds exposed to wastewater were lower than recorded in the controls. Hence, DNA yields exposed to wastewater were run ahead on agarose gel according to the control group. The results clearly indicate that refinery wastewater had important cytotoxic effects on V faba root tip cells. It was also observed that V faba seeds are very sensitive and useful biomarkers for monitoring these effects in waters contaminated with heavy metals.
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页码:465 / 470
页数:6
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