Nano-Iron Oxide (Fe3O4) Mitigates the Effects of Microplastics on a Ryegrass Soil-Microbe-Plant System

doi:10.1021/acsnano.3c05809

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	Nano-Iron Oxide (Fe3O4) Mitigates the Effects of Microplastics on a Ryegrass Soil-Microbe-Plant System
	Liu,Dong; Iqbal,Shahid; Gui,Heng; Xu,Jianchu; An,Shaoshan; Xing,Baoshan
	2023
发表期刊	ACS NANO
ISSN	1936-086X
卷号	17 期号:24 页码:24867-24882
摘要	To understand microplastic-nanomaterial interactions in agricultural systems, a randomized block 90-day pot experiment was set up to cultivate ryegrass seedings in a typical red sandy soil amended with compost (1:9 ratio). Polyvinyl chloride (PVC) and polyethylene (PE) microplastic (MP) contaminants were added into pot soils at 0.1 and 10%, whereas nano-Fe3O4 (as nanoenabled agrochemicals) was added at 0.1% and 0.5% in comparison with chemical-free controls. The combination of nano-Fe3O4 and MPs significantly increased the soil pH (+3% to + 17%) but decreased the total nitrogen content (-9% to - 30%; P < 0.05). The treatment group with both nano-Fe3O4 and PE had the highest total soil C (29 g kg(-1) vs 20 g kg(-1) in control) and C/N ratio (13 vs 8 in control). Increased rhizosphere nano-Fe3O4 concentrations promoted ryegrass growth (+42% dry weight) by enhancing the chlorophyll (+20%) and carotenoid (+15%) activities. Plant leaf and root peroxidase enzyme activity was more significantly affected by nano-Fe3O4 with PVC (+15%) than with PE (+6%). Nano-Fe3O4 significantly changed the ryegrass bacterial community structure from belowground (the rhizoplane and root endosphere) to aboveground (the phylloplane). Under MP contamination, the addition of nano-Fe3O4 increased bacterial diversity (+0.35%) and abundance (+30%) in the phylloplane and further intensified the connectivity of ryegrass aboveground bacterial networks (positive association increased 17%). The structural equation model showed that the change in the plant microbiome was associated with the rhizosphere microbiome. Overall, these findings imply the positive influences of nano-Fe3O4 on the soil-microbe-plant system and establish a method to alleviate the harmful effects of MP accumulation in soils.
关键词	grass microbiome microplastics nanoparticles soils ryegrass ORGANIC-MATTER COMMUNITY STRUCTURE PH ACCUMULATION PHYLLOSPHERE DIVERSITY PATTERNS
DOI	10.1021/acsnano.3c05809
收录类别	SCI
WOS记录号	WOS:001132958500001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75277
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Liu,Dong,Iqbal,Shahid,Gui,Heng,et al. Nano-Iron Oxide (Fe3O4) Mitigates the Effects of Microplastics on a Ryegrass Soil-Microbe-Plant System[J]. ACS NANO,2023,17(24):24867-24882.
APA	Liu,Dong,Iqbal,Shahid,Gui,Heng,Xu,Jianchu,An,Shaoshan,&Xing,Baoshan.(2023).Nano-Iron Oxide (Fe3O4) Mitigates the Effects of Microplastics on a Ryegrass Soil-Microbe-Plant System.ACS NANO,17(24),24867-24882.
MLA	Liu,Dong,et al."Nano-Iron Oxide (Fe3O4) Mitigates the Effects of Microplastics on a Ryegrass Soil-Microbe-Plant System".ACS NANO 17.24(2023):24867-24882.

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