Effects of Low Concentration Endosulfan on Some Enzymatic Activities and Bacterial Community Structure in Brunisolic Soil
Effects of Low Concentration Endosulfan on Some Enzymatic Activities and Bacterial Community Structure in Brunisolic Soil
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发表时间：
2014
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通讯作者：
Guo Peng-pen
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作者：
Guo Peng-pen
通过室内试验，研究了不同浓度（0、0.1、1、10 mg / kg土壤）硫丹在处理7日、14日、21日、28日对褐褐型土壤中脲酶、脱氢酶和β-葡萄糖苷酶)及微生物群落结构多样性的毒理学影响。硫丹不影响土壤脲酶活性，但对土壤脱氢酶有显著抑制作用，且浓度越高，对土壤脱氢酶的抑制作用越强。而硫丹对β-葡萄糖苷酶的活性有稳定而显著的增强作用。DGGE数据表明，0~10 mg·kg-1的硫丹对土壤细菌群落结构和活性没有毒性影响。综上所述，硫丹对褐褐型土壤细菌群落结构没有影响。
A laboratory experiment was performed to evaluate the toxicological effects of endosulfan on some enzymes(urease, dehydrogenase and β-glucoside)and microbial community structure diversity in a brunisolic soil at different concentrations(0, 0.1, 1 mg and 10 mg endosulfan per kg soil)on the 7th, 14 th, 21 stand 28thday of treatment. Endosulfan did not influence soil urease activity, but significantly inhibited dehydrogenase with stronger suppression at higher concentrations. However, the activity of β-glucoside enzyme was steadily and significantly enhanced by endosulfan. The DGGE data showed that endosulfan at 0~10 mg·kg-1had no toxic effects on soil bacterial community structure and activities. In conclusion, endosulfan did not impact bacterial community structure in the brunisolic soil.