Amendment soil with biochar to control antibiotic resistance genes under unconventional water resources irrigation: Proceed with caution

Environmental Pollution
Erping CuiAndrew L Neal

Abstract

The spread of antibiotic resistance genes (ARGs) has become a cause for serious concern because of its potential risk to public health. The use of unconventional water resources (e.g., reclaimed water or piggery wastewater) in agriculture to relieve groundwater shortages may result in an accumulation of ARGs in soil. Biochar addition has been proven to be a beneficial method to alleviate the pollution of ARGs in manure-amended soil. However, the role of biochar on ARGs in soil-plant systems repeatedly irrigated with unconventional water resources is unknown. Under reclaimed water or piggery wastewater irrigation, rhizobox experiments using maize plants in soil amended with biochar were conducted to investigate the variation of typical ARGs (tet and sul genes) in soil-plant systems during a 60-day cultivation, and ARGs was characterized by high-throughput qPCR with a 48 (assays) × 108 (samples) array. Only piggery wastewater irrigation significantly increased the abundance of ARGs in rhizosphere and bulk soils and root endophytes. Following 30-day cultivation, the abundance of ARGs in soil was significantly lower due to biochar addition. However, by day 60, the abundance of ARGs in soil supplemented with biochar was significantl...Continue Reading

Citations

Jan 6, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hassan WaseemMuhammad Ishtiaq Ali
Feb 5, 2021·Environmental Pollution·Majid KomijaniMohammad Bahram
May 31, 2021·The Science of the Total Environment·Jiawei YangHuan Li
May 17, 2021·The Science of the Total Environment·Liang-Ying HeGuang-Guo Ying
Jul 23, 2021·Journal of Hazardous Materials·Chen YanlongWang Yuheng
Jul 10, 2021·Environmental Pollution·Jian-Hua ChengChen Liu
Nov 8, 2021·The Science of the Total Environment·Max D GillinghamHelen M West

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