Molecular insights into effects of PBAT microplastics on latosol microbial diversity and DOM chemodiversity
文献类型： 外文期刊
作者： Liu, Yuqin 1 ; Zhang, Wen 1 ; Chen, Miao 1 ; Zhao, Xiongwei 7 ; Liu, Huiran 1 ; Ge, Meihong 1 ; Li, Ning 1 ; Ning, Ziyu 1 ; Gao, Wenlong 1 ; Fan, Changhua 1 ; Li, Qinfen 1 ;
作者机构： 1.Minist Agr & Rural Affairs, Key Lab Low carbon Green Agr Trop Reg China, Haikou 571101, Peoples R China
2.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Minist Agr & Rural Affairs, Haikou 571101, Peoples R China
3.Hainan Danzhou Trop Agroecosyst Natl Observat & Re, Danzhou 571737, Peoples R China
4.Hainan Key Lab Trop Ecocircular Agr, Haikou 571101, Peoples R China
5.Natl Long term Expt Stn Agr Green Dev, Danzhou 571737, Hainan, Peoples R China
6.Natl Agr Expt Stn Agr Environm, Danzhou 571737, Hainan, Peoples R China
7.Hainan Univ, Coll Ecol & Environm, Haikou 570228, Peoples R China
8.Chinese Acad Trop Agr Sci, Haikou 571101, Hainan, Peoples R China
关键词： PBAT microplastics; Latosol; Microbial community; Dissolved organic matter Co-occurrence; network
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 450 卷
页码：
收录情况： SCI
摘要： The impact of biodegradable microplastics on the microbial community and dissolved organic matter (DOM) in latosol has not been well reported. In this study, an incubation experiment at 25 C for 120 days using latosol amended with low (5%) and high (10%) concentrations of polybutylene adipate terephthalate (PBAT) micro -plastics was carried out to explore the impacts of PBAT microplastics on soil microbial communities and DOM chemodiversity, and the intrinsic interactions between their shifts. The main bacterial and fungal phyla in soil, namely Chloroflexi, Actinobacteria, Chytridiomycota, and Rozellomycota showed a nonlinear relationship with PBAT concentration and played a pivotal role in shaping DOM chemodiversity. A higher decreased levels of lignin-like compounds and increased levels of protein-like and condensed aromatic compounds in the 5% treatment were observed than that in the 10% treatment. Furthermore, a higher increase relative abundance of CHO compounds in the 5% treatment than in the 10% treatment was ascribed to its higher oxidation degree. Co-occurrence network analysis suggested that bacteria formed more complex relationships with DOM molecules than fungi did, indicating their critical roles in DOM transformation. Our study has important implications for understanding the potential influence of biodegradable microplastics on carbon biogeochemical roles in soil.
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