College of Resources and Environment, Shandong Agricultural University, Key Laboratory of Agricultural Environment in Universities of Shandong, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Daizong Road 61, Taian 271018, PR China.
College of Resources and Environment, Shandong Agricultural University, Key Laboratory of Agricultural Environment in Universities of Shandong, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Daizong Road 61, Taian 271018, PR China.
Sci Total Environ. 2019 May 20;666:89-93. doi: 10.1016/j.scitotenv.2019.02.240. Epub 2019 Feb 16.
Whether now or in the foreseeable future, agricultural production cannot do without chemical pesticides. Strobilurin fungicides, including mitochondrial inhibitors, can easily enter the soil environment and causing pollution. Fluoxastrobin is one of the top-selling strobilurin fungicides. Limited information can be found in the literature on the environmental toxicity of fluoxastrobin in soil. It is essential to understand the effects of fluoxastrobin on microorganisms in fluvo-aquic soil. The present study used a Biolog-EcoPlate method to analyze the effects of fluoxastrobin on soil microbial diversity in groups exposed to 0.1, 1.0, and 2.5 mg/kg fluoxastrobin and in control groups at exposure and on days 7, 14, 21, 28, and 48. The effects of fluoxastrobin on enzyme activities (β-glucosidase, dehydrogenase, and urease) in the soil were also evaluated. The results indicated that the three tested enzyme activities were lower at each dose to a varying degree than those of the controls. The soil microbial diversity was shown to be affected according to the results of average well color development (AWCD) experiments. The present study aimed to assess environmental risks to terrestrial ecosystems under the stress of pesticide use. These results also enrich the basic data on fungicide toxicity to the soil environment and have a guiding significance for the rational use of pesticides and the sustainable utilization of resources.
无论现在还是可预见的未来，农业生产都离不开化学农药。包括线粒体抑制剂在内的唑类杀菌剂很容易进入土壤环境，造成污染。氟唑菌酰胺是销量最高的唑类杀菌剂之一。关于氟唑菌酰胺在土壤中的环境毒性，文献中有限的信息可以找到。了解氟唑菌酰胺对土壤中微生物的影响是必要的。本研究采用 Biolog-EcoPlate 方法，分析了 0.1、1.0 和 2.5 mg/kg 氟唑菌酰胺暴露组和对照组在暴露和第 7、14、21、28 和 48 天的土壤微生物多样性的影响。还评估了氟唑菌酰胺对土壤中酶活性（β-葡萄糖苷酶、脱氢酶和脲酶）的影响。结果表明，与对照组相比，每种剂量的三种测试酶活性都在不同程度上降低。根据平均好氧显色（AWCD）实验的结果，土壤微生物多样性受到影响。本研究旨在评估在农药使用压力下对陆地生态系统的环境风险。这些结果还丰富了杀菌剂对土壤环境毒性的基础数据，对农药的合理使用和资源的可持续利用具有指导意义。
