Impact of pyroxasulfone on sugarcane rhizosphere microbiome and functioning during field degradation

文献类型： 外文期刊

第一作者： Wang, Yanhui

作者： Wang, Yanhui;Zheng, Tao;Ma, Yonglin;Li, Weisheng;Men, Jianan;Jin, Decai;Men, Jianan;Cernava, Tomislav;Cernava, Tomislav;Bai, Lianyang

作者机构：

关键词： Pyroxasulfone; Herbicides; Microbiome; Bacterial community

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：13.6； 五年影响因子：12.7 ）

ISSN： 0304-3894

年卷期： 2023 年 455 卷

页码：

收录情况： SCI

摘要： Pyroxasulfone (PYR) is a widely used herbicide, but its effects on non-target organisms, particularly microor-ganisms, are largely unknown. Herein, we investigated the effects of various doses of PYR on the sugarcane rhizosphere microbiome by using amplicon sequencing of rRNA genes and quantitative PCR techniques. Cor-relation analyses indicated that several bacterial phyla (Verrucomicrobia and Rhodothermaeota) and genera (Streptomyces and Ignavibacteria) strongly responded to PYR application. Additionally, we found that both bac-terial diversity and composition were significantly altered after 30 days, indicating a prolonged effect of the herbicide. Moreover, co-occurrence analyses of the bacterial community showed that the network complexity was significantly decreased by PYR at day 45. Furthermore, FAPROTAX analysis suggested that some functions with implications for carbon cycling groups were significantly altered after 30 days. Overall, we provide the first indications that PYR may not pose a significant risk for altering microbial communities in the short term (less than 30 days). However, its potential negative effects on bacterial communities in the middle and late stages of degradation deserve further attention. To our knowledge, this is the first study to provide insight into the effects of PYR on the rhizosphere microbiome, providing an extended basis for future risk assessments.

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