期刊
ENVIRONMENTAL POLLUTION
卷 192, 期 -, 页码 9-18出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2014.05.001
关键词
A. caliginosa; A. chlorotica; Soil pesticide contamination; Biotransformation; Oxidative stress; Adaptation
资金
- European University of Brittany via the International Chair of Excellence in Agronomy and Environment
- Institute francais du Danemark
This study investigates if acclimatization to residual pesticide contamination in agricultural soils is reflected in detoxification, antioxidant enzyme activities and energy budget of earthworms. Five fields within a joint agricultural area exhibited different chemical and farming histories from conventional cultivation to organic pasture. Soil multiresidual pesticide analysis revealed up to 9 molecules including atrazine up to 2.4 ng g(-1) dry soil. Exposure history of endogeic Aporrectodea caliginosa and Allolobophora chlorotica modified their responses to pesticides. In the field, activities of soluble glutathione-S-transferases (sGST) and catalase increased with soil pesticide contamination in A. caliginosa. Pesticide stress was reflected in depletion of energy reserves in A. chlorotica. Acute exposure of pre-adapted and naive A. caliginosa to pesticides (fungicide Opus (R), 0.1 mu g active ingredient epoxiconazole g(-1) dry soil, RoundUp Flash (R), 2.5 mu g active ingredient glyphosate g(-1) dry soil, and their mixture), revealed that environmental pre-exposure accelerated activation of the detoxification enzyme sGST towards epoxiconazole. (C) 2014 Elsevier Ltd. All rights reserved.
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