Halosulfuron methyl did not have a significant effect on diversity and community of sugarcane rhizosphere microflora
Halosulfuron methyl did not have a significant effect on diversity and community of sugarcane rhizosphere microflora
复制标题
甲基卤磺隆对甘蔗根际微生物区系多样性和群落没有显着影响
DOI：
10.1016/j.jhazmat.2020.123040
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发表时间：
2020-11-15
影响因子：
13.6
通讯作者：
Jin, Decai
中科院分区：
文献类型：
--
作者：
Wang, Yanhui;Du, Liangwei;Jin, Decai
氯磺隆是一种新型高效磺酰脲类除草剂，在农业生产中广泛应用。然而，其潜在的生态风险仍然未知。采用16 S rRNA基因高通量测序技术，研究了不同浓度HM对甘蔗根际土壤细菌群落的影响。130 mg/kg、600 mg/kg和1300 mg/kg三个浓度的HM的半衰期分别为6.64、9.19和9.87 d。HM的应用并没有改变α或β多样性的土壤细菌群落，而一些微生物种群和主要的微生物功能群显着改变HM曝光。结果表明，蓝藻门和未分类的绿弯藻属（Chloroflexi group）KD 4 -96与土壤中重金属浓度呈正相关，表明它们与土壤中重金属的生物降解密切相关。土壤理化性质与微生物群落结构的相关性分析表明，全氮和全磷浓度是影响微生物群落结构的两个关键因子。据我们所知，这是第一个微生物生态毒理学评估HM在农业土壤中。
Halosulfuron methyl (HM) is a new, highly active sulfonylurea herbicide that has been widely used for weed control in agricultural production. However, its potential ecological risks remain unknown. In this study, we investigated the impact of different concentrations of HM on bacterial communities in sugarcane rhizospheric soil by using 16S rRNA gene high-throughput sequencing. The half-life of HM for 130 mg/kg, 600 mg/kg, and 1300 mg/kg spraying concentrations were 6.64, 9.19, and 9.87 d, respectively. HM application did not alter the alpha or beta diversity of the soil bacterial community, whereas some microbial populations and the main microbial functional groups were significantly altered by HM exposure. The phylum Cyanobacteria and genus unclassified Chloroflexi group KD4-96 were found to be positively correlated with HM concentration in soils, indicating that they are highly involved in the biodegradation of HM in soils. Relationship analysis between soil properties and microbial communities showed that total nitrogen and total phosphorus concentration were two key factors that significantly influenced microbial community structure. To our best knowledge, this is the first microbial ecotoxicological assessment of HM in agricultural soil.