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Antibiotics and Antibiotic Resistance Genes in Agroecosystems as Emerging Contaminants

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Sustainable Agriculture Reviews 50

Abstract

Rapid rise in pharmaceutical industries during past decades in order to cure challenging human diseases has released considerable amounts of antibiotics in natural ecosystem including soil and aquatic ecosystem. The presence of antibiotics beyond the acceptable limits in agro-ecosystems entering through different sources like wastewater irrigation and manure application has witnessed multiple negative consequences on environmental homoeostasis. Moreover, the injudicious application of antibiotics for treatment of human diseases, improvement in crop yield and enhancement in productivity of livestock based meat production have triggered the resistance development in exposed microorganisms dwelling in agricultural soils, putting severe environmental threat to humans and other components of the food chain. The resistance to exposed antibiotics conferred through antibiotic resistance genes is well documented and agro-ecosystem contamination with antibiotic resistance genes as a rising risk is registered globally. So far, numbers of antibiotics and antibiotic resistance genes have been identified as emerging contaminants in soil ecosystem, suggesting the deployment of suitable strategies falling in the categories of physical, chemical and biological strategies to decontaminate the agricultural soils affected with antibiotics and associated resistance genes.

The present chapter entails contamination of soil with different antibiotics and genes responsible for antibiotic resistance, changes in soil microbiological characteristics and important soil processes including biogeochemical cycling of vital nutrients. In addition, possible sources of contamination including manure application, effluents from wastewater treatment plants, discharges from hospitals, households and pharmaceutical industries are also provided. Some of the currently used quantification techniques like high performance liquid chromatography (HPLC), liquid chromatography-mass spectroscopy (LC-MS), quantitative-polymerase chain reaction (q-PCR) and next generation sequencing (NGS) are presented in the article in order to elucidate the fate and transport. Furthermore, impact on human health leading to considerable changes in gut microflora and microbial resistance development against commonly used antibiotics and spread of antibiotic resistance genes in environment along with possible sustainable strategies falling in the category of microbial degradation and phytoremediation have been discussed briefly to deal with such emerging contaminants.

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Abbreviations

ELISA:

Enzyme-linked immunosorbent assay

HPLC:

High performance liquid chromatography

LC-MS:

Liquid chromatography-mass spectroscopy

q-PCR:

Quantitative polymerase chain reaction

UPLC:

Ultra-performance liquid chromatography

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Correspondence to Vipin Kumar Singh .

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Singh, V.K., Singh, R., Kumar, A., Bhadouria, R., Singh, P., Notarte, K.I. (2021). Antibiotics and Antibiotic Resistance Genes in Agroecosystems as Emerging Contaminants. In: Kumar Singh, V., Singh, R., Lichtfouse, E. (eds) Sustainable Agriculture Reviews 50. Sustainable Agriculture Reviews, vol 50. Springer, Cham. https://doi.org/10.1007/978-3-030-63249-6_7

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