Different responses of soil microbial metabolic activity to silver and iron oxide nanoparticles

Chemosphere
Shiying HeLinzhang Yang

Abstract

The knowledge regarding the effects of metal or metal oxide nanoparticles on soil microbial metabolic activity and key ecological functions is limited, relative to the information about their species diversity. For this reason, the responses of soil microbial metabolic activity to silver (AgNPs) and iron oxide (FeONPs) nanoparticles, along concentration gradients of each, were evaluated by microcalorimetry and soil nitrification potential. The changes in abundances of bacteria, eukaryotes and ammonia-oxidizing bacteria were measured by real time quantitative PCR. It was found that AgNP (at 0.1, 1 and 10 mg kg(-1) soil) amendments decreased soil microbial metabolic activity, nitrification potential and the abundances of bacteria and ammonia-oxidizing bacteria; on the contrary, FeONPs had the positive effects on soil microbial metabolic activity (at 1 and 10 mg kg(-1) soil) and soil nitrification potential (at 0.1 and 1 mg kg(-1) soil). Specific microbial metabolic activity and specific nitrification potential further revealed that metal or metal oxide nanoparticles could change the C and N cycles of the agricultural soil through influencing soil microbial metabolism. These findings could deepen the understanding of the influence...Continue Reading

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Citations

Feb 6, 2017·Scientific Reports·Muhammad Imtiaz RashidTalal Almeelbi
Jan 25, 2020·Environmental Science and Pollution Research International·Jiling CaoJunhua Wang
Aug 20, 2018·Environmental Geochemistry and Health·Svyatoslav Valeryevich LebedevElena Anatolyevna Sizova
Feb 6, 2021·Environmental Toxicology and Pharmacology·Chaolu RenHongyuan Wang
Feb 13, 2021·Ecotoxicology and Environmental Safety·Fuad AmeenSaleh ALNadhari
Nov 18, 2020·Environmental Science and Pollution Research International·Imran KhanLinkai Huang
Aug 24, 2020·Ecotoxicology and Environmental Safety·Muhammad KamranGhulam Mustafa Shah
Jun 28, 2019·Environmental Science & Technology·Chenchen QuQiaoyun Huang

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