文献类型：期刊文献

英文题名：Effects of copper oxide nanoparticles on Salix growth, soil enzyme activity and microbial community composition in a wetland mesocosm

作者：Qu, Haojie[1] Ma, Chuanxin[2] Xing, Wenli[1] Xue, Liang[1] Liu, Hong[4] White, Jason C.[3] Chen, Guangcai[1] Xing, Baoshan[5]

第一作者：Qu, Haojie

通信作者：Chen, GC[1]|[a000551c9abd7c3960d59]陈光才;

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[2]Guangdong Univ Technol, Inst Environm & Ecol Engn, Key Lab City Cluster Environm Safety & Green Dev, Minist Educ, Guangzhou 510006, Peoples R China;[3]Connecticut Agr Expt Stn, New Haven, CT 06504 USA;[4]Fujian Agr & Forestry Univ, Coll Environm & Resources, Fuzhou 350002, Peoples R China;[5]Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA

年份：2022

卷号：424

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000734399000005)】；

基金：This work was financially supported by Fundament Research Funds of Chinese Academy of Forestry (Grant No. CAFYBB2019SZ001 & RISFZ-2016-17).

语种：英文

外文关键词：Copper oxide nanoparticles; Wetland environment; Salix integra; Microbiota; Soil microbial enzyme activity

摘要：A model wetland with Salix was established to investigate the effects of CuO nanoparticles (NPs; the equivalent amount of Cu at 0, 100 and 500 mg/kg) on plant, soil enzyme activity and microbial community. Ionic Cu (100, 500 mg/kg) and bulk-sized CuO particles (BPs, 500 mg/kg) were included as controls. The results suggested the CuO NPs at 500 mg/kg and ionic Cu treatments inhibited the plant growth, while CuO NPs at 100 mg/kg and CuO BPs at 500 mg/kg played a facilitating role. CuO NPs significantly decreased the activities of peroxidase and polyphenol oxidase, while ionic Cu treatments increased peroxidase activity, BPs and ionic Cu (500 mg/kg) increased the polyphenol oxidase activity. Bacterial community richness and diversity were reduced in all Cu treatments; however, CuO NPs and BPs at 500 mg/kg significantly increased the richness and diversity of fungal community.Soil microbial community was significantly altered by Cu types and dose. In comparison with ionic Cu and CuO BPs, CuO NPs uniquely enriched the microbial community and the fungal families.Overall, it demonstrate that both particle size and dose regulate the impact of CuO on wetland ecology, which deepens our understanding on the ecological risks of CuO NPs in freshwater forested wetland.