- Title
- Ecotoxicity of parathion during its dissipation mirrored by soil enzyme activity, microbial biomass and basal respiration
- Creator
- Tao, Kelin; Tian, Haixia; Wang, Ziquan; Shang, Xiaofu; Fan, Jing; Megharaj, Mallavarapu; Ma, Jianli; Jia, Hanzhong; He, Wenxiang
- Relation
- Chemosphere Vol. 311 Part 2, Issue January 2023, no. 137116
- Publisher Link
- http://dx.doi.org/10.1016/j.chemosphere.2022.137116
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2022
- Description
- The application of parathion (PTH) in agriculture can result in its entry into the soil and threaten the soil environment. Monitoring the PTH residues and assessing toxicity on soil health are of paramount importance to the public. Herein, the dissipation of PTH and concomitant influence on microbial activities [FDA hydrolase (FDA‒H), microbial biomass carbon (MBC) and basal respiration (BR)] in coastal solonchaks were investigated. Results showed that the dissipation of PTH in tested soil declined linearly, and the half-lives varied from 5.6 to 56.8 days, depending on pollutant concentrations. The FDA‒H activity and MBC were negatively affected by PTH pollution and exhibited a significantly positive correlation. Two‒way ANOVA analysis demonstrated that microbial activities were affected not only by PTH dose and incubation time but also by their interactions. The integrated biomarker response (IBR/n) index values on day 120 were between 1.02 and 2.89, larger than those on day 1 during PTH dissipation. This implied that the soil quality did not recover though there was no PTH residue in the soil at the end of the experiment. These findings suggested that microbial activities integrated with IBR/n index could elucidate the hazardous impacts of PTH dissipation on biochemical cycling and microorganisms in soil.
- Subject
- pesticide; parathion; ecological risk; coastal solonchaks; biochemical indicators; SDG 3; SDG 14; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1475626
- Identifier
- uon:49607
- Identifier
- ISSN:0045-6535
- Language
- eng
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