文献类型：期刊文献

英文题名：Impacts of earthworm casts on atrazine catabolism and bacterial community structure in laterite soil

作者：Luo, Shuwen[1];Ren, Lei[1];Wu, Weijian[1];Chen, Yijie[1];Li, Gaoyang[1];Zhang, Weijian[1];Wei, Ting[1];Liang, Yan-Qiu[2];Zhang, Dayi[3];Wang, Xinzi[4];Zhen, Zhen[1];Lin, Zhong[2,5]

机构：[1]Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Fac Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[3]Jilin Univ, Coll New Energy & Environm, Changchun 130021, Peoples R China;[4]Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China;[5]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen 518114, Peoples R China

年份：2022

卷号：425

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000752501400005)、、EI(收录号：20214811231693)、Scopus(收录号：2-s2.0-85119655314)、WOS

基金：This work was financially supported by National Natural Science Foundation of China (41977125, 41907033 and 31800109), Natural Science Foundation of Guangdong Province (2019A1515011948). DZ also acknowledges the support of Chinese Government's Thousand Talents Plan for Young Professionals.

语种：英文

外文关键词：Atrazine; Earthworm cast; Metabolic pathway; Soil microbial community

外文摘要：Atrazine accumulation in agricultural soil is prone to cause serious environmental problems and pose risks to human health. Vermicomposting is an eco-friendly approach to accelerating atrazine biodegradation, but the roles of earthworm cast in the accelerated atrazine removal remains unclear. This work aimed to investigate the roles of earthworm cast in promoting atrazine degradation performance by comprehensively exploring the change in atrazine metabolites and bacterial communities. Our results showed that earthworm cast amendment significantly increased soil pH, organic matters, humic acid, fulvic acid and humin, and achieved a significantly higher atrazine removal efficiency. Earthworm cast addition also remarkably changed soil microbial communities by enriching potential soil atrazine degraders (Pseudomonadaceae, Streptomycetaceae, and Thermomonosporaceae) and introducing cast microbial degraders (Saccharimonadaceae). Particularly, earthworm casts increased the production of metabolites deethylatrazine and deisopropylatrazine, but not hydroxyatrazine. Some bacterial taxa (Gaiellaceaea and Micromonosporaceae) and humus (humic acid, fulvic acid and humin) were strongly correlated with atrazine metabolism into deisopropylatrazine and deethylatrazine, whereas hydroxyatrazine production was benefited by higher pH. Our findings verified the accelerated atrazine degradation with earthworm cast supplement, providing new insights into the influential factors on atrazine bioremediation in vermicomposting.