Enantioselectivity in degradation and ecological risk of the chiral pesticide ethiprole

Zhang, Qing, Xiong, Wu, Gao, Beibei, Cryder, Zachary, Zhang, Zhaoxian, Tian, Mingming, Sanganyado, Edmond, Shi, Haiyan and Wang, Minghua (2018) Enantioselectivity in degradation and ecological risk of the chiral pesticide ethiprole. Land Degradation and Development, 29 (12). pp. 4242-4251. ISSN 1085-3278

Land Degrad Dev - 2018 - Zhang - Enantioselectivity in degradation and ecological risk of the chiral pesticide ethiprole.pdf - Published Version
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Official URL: https://doi.org/10.1002/ldr.3179


Intensive agricultural activities have caused land degradation due to soil pollution, particularly by pesticides. However, the degradation, metabolism, and toxicity of chiral pesticides by soil microorganisms are often enantioselective. This study aimed to determine the effect of chirality on the degradation of the enantiomers of ethiprole in soil and their impact on soil microbial communities. (R)-ethiprole underwent directional chiral conversion to the (S)-enantiomer in a paddy soil microcosm, leading to elevated concentrations of (S)-ethiprole. Initially, the bacterial operational taxonomic units significantly decreased after 3 days of incubation with rac-ethiprole, (R)-ethiprole, and (S)-ethiprole but gradually increased in the later stage. Principal coordinate analysis revealed that the bacterial community structure was enantioselectively affected by the ethiprole enantiomers. Within 3 days, both rac-ethiprole and (R)-ethiprole reshaped the original stochastic microbial community into a deterministic community (variable selection). Thus, we propose that the enantioselective behavior and ecotoxicology of chiral pesticides need to be considered, especially because there are numerous chiral pesticides currently in use within agricultural management. The comprehensive understanding of the ecological risk of chiral pesticide enantiomers is vital to the process of improving sustainable production and environmental health in agricultural ecosystems.

Item Type: Article
Additional Information: Funding information: National Key Research and Development Program of China. Grant Number: 2016YFD0200207
Uncontrolled Keywords: bacterial community, chiral ethiprole, ecological risk, enantioselective degradation, paddy soils
Subjects: C100 Biology
C500 Microbiology
C900 Others in Biological Sciences
Department: Faculties > Health and Life Sciences > Applied Sciences
Depositing User: Rachel Branson
Date Deposited: 22 Mar 2022 11:29
Last Modified: 22 Mar 2022 11:30
URI: http://nrl.northumbria.ac.uk/id/eprint/48723

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