Effects of the fungicide trifloxystrobin on the structure and function of soil bacterial community

被引：8
作者：
Xiao, Zongyuan [1 ]
Hou, Kaixuan [1 ]
Zhou, Tongtong [1 ]
Zhang, Jingwen [1 ]
Li, Bing [1 ]
Du, Zhongkun [1 ]
Sun, Shujuan [1 ]
Zhu, Lusheng [1 ]
机构：
[1] Shandong Agr Univ, Coll Resources & Environm, Key Lab Agr Environm Univ Shandong, 61 Daizong Rd, Tai An, Peoples R China
来源：
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY | 2023年 / 99卷
基金：
中国国家自然科学基金;
关键词：
Strobilurin fungicide; Soil enzyme; Functional gene abundance; High-throughput sequencing; Integrated biomarker response; AGRICULTURAL SOIL; MINERAL FERTILIZATION; CARBON SEQUESTRATION; 4; STROBILURINS; SP STRAIN; ENZYME; GENES; NITRIFICATION; DIVERSITY; DENITRIFICATION;
D O I：
10.1016/j.etap.2023.104104
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Trifloxystrobin has been widely applied to prevent fungal diseases because of its high efficiency and desirable safety characteristics. In the present study, the effects of trifloxystrobin on soil microorganisms were integrally investigated. The results showed that trifloxystrobin inhibited urease activity, promoted dehydrogenase activity. Downregulated expressions of the nitrifying gene (amoA), denitrifying genes (nirK and nirS), and carbon fixation gene (cbbL) were also observed. Soil bacterial community structure analysis showed that trifloxystrobin changed the abundance of bacteria genera related to nitrogen and carbon cycle in soil. Through the comprehensive analysis of soil enzymes, functional gene abundance, and soil bacterial community structure, we concluded that trifloxystrobin inhibited both nitrification and denitrification of soil microorganisms, and also diminished the carbon-sequestration ability. Integrated biomarker response analysis showed that dehydrogenase and nifH were the most sensitive indicators of trifloxystrobin exposure. It provides new insights about trifloxystrobin envi-ronmental pollution and its influence on soil ecosystem.
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页数：10
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