Responses of soil fungal taxonomic attributes and enzyme activities to copper and cadmium co-contamination in paddy soils

NWIPB OpenIR

	Responses of soil fungal taxonomic attributes and enzyme activities to copper and cadmium co-contamination in paddy soils
	Guo, YF; Cheng, SL; Fang, HJ; Yang, Y; Li, YN; Zhou, Y
	2022
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
卷号	844
摘要	Excess heavy metals, especially copper (Cu) and cadmium(Cd), are common in paddy soils in the red soil hilly areas of southern China. Microorganisms are regulators of soil organic matter accumulation and pollutant transformation. Clarifying the effects of Cu and Cd accumulation on microbial community composition and function is a prerequisite for bioremediation of paddy soil contamination. However, it remains unclear how Cu and Cd contamination affects soil fungal taxonomic attributes and microbial-mediated biogeochemical processes in paddy soils. Here, soil heavy metals, fungal community composition, and soil enzyme activities were determined in paddy fields downstream of a typical mining area in southern China, and the effects of Cu and Cd co-contamination on fungal community diversity and co-occurrence networks, as well as the associations between them were assessed. The concentrations of Cu and Cd in paddy soils decreased from upstream to downstream of the river, and were positively correlated with the Shannon index of fungal communities. Soil Cu and Cd concentrations exhibited a greater impact on the structure and assembly of fungal communities than soil general properties. Increases in soil Cu and Cd concentrations were correlated with drastic changes in the cumulative relative abundance of ecological clusters in fungal co-occurrence networks. Soil Cu and Cd concentrations were positively correlated with the relative abundances of Eurotiomycetes, Pezizomycetes, Ustilaginomycetes, and Kickxellomycetes, respectively, whereas negatively correlated with hydrolase activities related to carbon, nitrogen, and phosphorus cycles. These results confirmed in the field that long-term Cu and Cd enrichment significantly altered the structure and diversity of fungal communities in the subtropical paddy soils, thereby affecting soil nutrient transformation and organic matter accumulation. This can also provide a basis for the bioremediation of heavy metal pollution in paddy soils.
收录类别	SCIE
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/61073
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Guo, YF,Cheng, SL,Fang, HJ,et al. Responses of soil fungal taxonomic attributes and enzyme activities to copper and cadmium co-contamination in paddy soils[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,844.
APA	Guo, YF,Cheng, SL,Fang, HJ,Yang, Y,Li, YN,&Zhou, Y.(2022).Responses of soil fungal taxonomic attributes and enzyme activities to copper and cadmium co-contamination in paddy soils.SCIENCE OF THE TOTAL ENVIRONMENT,844.
MLA	Guo, YF,et al."Responses of soil fungal taxonomic attributes and enzyme activities to copper and cadmium co-contamination in paddy soils".SCIENCE OF THE TOTAL ENVIRONMENT 844(2022).