Quantitative Campylobacter spp., antibiotic resistance genes, and veterinary antibiotics in surface and ground water following manure application: Influence of tile drainage control

Frey, Steven K.; Topp, Edward; Khan, Izhar U. H.; Ball, Bonnie R.; Edwards, Michael G.; Gottschall, N.; Sunohara, Mark; Lapen, David R.

doi:10.1016/j.scitotenv.2015.03.114

Cited by 62 publications

(17 citation statements)

References 72 publications

(99 reference statements)

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“…Fields (or ‘plots’) 1 (45°16′18.578″ N, 75°10′6.743″ W) and 2 (45°16′19.485″ N, 75°10′3.483″ W) are located in the WEBs (Watershed Evaluation of Beneficial Management Practices) experimental watershed (Sunohara et al ., ) site near Ottawa, Ontario, Canada. The boundary between fields (or ‘plots’) 3 and 4 (45°3′42.221″ N, 75°20′31.976″ W) is located at an experimental research site in Winchester, Ontario, Canada south of Ottawa (Frey et al ., ). All soil samples in this study were collected on October 22, 2012 (Table ).…”

Section: Methodsmentioning

confidence: 97%

Agricultural soil denitrifiers possess extensive nitrite reductase gene diversity

Coyotzi

Doxey

Clark

et al. 2017

Environmental Microbiology

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Denitrification transforms nitrogen applied as fertilizer and emits N O, which is a potent greenhouse gas. Very little is known about the identities of abundant and active denitrifiers in agricultural soils. We coupled DNA stable-isotope probing (DNA-SIP) with flow-through reactors (FTRs) to detect active agricultural soil denitrifiers. The FTRs were incubated with nitrate and C -glucose under anoxic conditions and sampled at multiple time points. Labelled DNA from active microorganisms was analyzed by 16S rRNA gene fingerprinting, amplicon and shotgun metagenomic sequencing. Taxonomic representation of heavy fractions was consistent across sites and time points, including Betaproteobacteria (71%; Janthinobacterium, Acidovorax, Azoarcus and Dechloromonas), Alphaproteobacteria (8%; Rhizobium), Gammaproteobacteria (4%; Pseudomonas) and Actinobacteria (4%; Streptomycetaceae). Most nitrite-reductase reads from heavy DNA annotated to the copper-containing form (nirK). Assigned taxonomies of active denitrifiers based on reads matching the nirK gene were comparable to those obtained through nitric oxide (norB) and RNA polymerase (rpoB) annotations but not the nitrous oxide reductase gene (nosZ). Analysis of recovered metagenomes from heavy DNA demonstrated extensive nirK sequence family diversity, including novel taxonomic groups that are not captured by existing primers.

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Section: Methodsmentioning

confidence: 97%

Agricultural soil denitrifiers possess extensive nitrite reductase gene diversity

Coyotzi

Doxey

Clark

et al. 2017

Environmental Microbiology

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“…Hence, urban residents may be exposed to ARGs via ingestion of metal-contaminated urban soils (especially children) or vegetables (urban gardening) unless adequate precautions are taken. Metals and co-selected ARGs may also be leached to groundwater or transported by surface runoff to aquatic receptors implying subsequent human ARG exposure via drinking water (Frey et al, 2015, Ma et al, 2017 or recreational activities (Leonard et al, 2018). Specific metals will probably co-select for different ARGs in different soils and it will therefore not be relevant to monitor only a few ARGs when evaluating risks posed by toxic soil metals.…”

Section: Co-selection Mechanisms and Potential For Horizontal Gene Trmentioning

confidence: 99%

Evidence for co-selection of antibiotic resistance genes and mobile genetic elements in metal polluted urban soils

Zhao

Cocerva

Cox

et al. 2019

Science of The Total Environment

196

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“…In states such as Arkansas, the land application of manure generated by confined poultry operations has been identified as a source of both excess nutrients, especially phosphorous, and fecal indicator bacteria (FIB) in regional watersheds (Ismail et al, 2016;Sharpley et al, 2016). Watershed contamination from local farming systems has affected both surface (Edge et al, 2012;Vereen et al, 2013) and groundwaters (Gallay et al, 2006;Frey et al, 2015), and has been linked to human illness within and near these farming communities (McEwen et al, 2006;Gilpin et al, 2008). One such major recent example occurred in Walkerton, Ontario, Canada, where a waterborne outbreak of Campylobacter jejuni, C. coli, and Escherichia coli O157:H7 occurred, and phenotypic/genotypic characterizations attributed specific subtypes to a single local farm (Clark et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Pastured Poultry Production in the United States: Strategies to Balance System Sustainability and Environmental Impact

Rothrock

Gibson

Micciche

et al. 2019

Front. Sustain. Food Syst.

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Nutrient and pathogen pollution are the leading causes of water quality impairment in lakes, reservoirs, and rivers in the United States. Dissemination of these contaminants can result in eutrophication of freshwater resources and pose a risk to public health through recreational contact and degradation of waters used as drinking water sources. Agricultural production practices, both crop and animal, have been identified as sources of excess nutrients and microbial pathogens contributing to freshwater pollution. In the U.S., commercial meat poultry production has been targeted as a source of both excess nutrients, especially phosphorus, and fecal indicator bacteria (FIB) in regional watersheds. Recently, there has been an increase in pastured poultry operations where chickens have access to fresh pasture on a daily basis. However, few studies have explored the environmental sustainability of these types of poultry production systems. In the case of pastured poultry systems in close proximity to watersheds, there is a need to better understand potential environmental impacts in order to implement sustainable and cost-effective practices. The identification of such environmental and economic benefits would complement the mission and objectives of farmers using pastured poultry production systems and may add more value to their product. This review will focus on potential mitigation strategies to enhance environmental sustainability and provide economic benefit to small scale pastured poultry operations.

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Quantitative Campylobacter spp., antibiotic resistance genes, and veterinary antibiotics in surface and ground water following manure application: Influence of tile drainage control

Cited by 62 publications

References 72 publications

Agricultural soil denitrifiers possess extensive nitrite reductase gene diversity

Agricultural soil denitrifiers possess extensive nitrite reductase gene diversity

Evidence for co-selection of antibiotic resistance genes and mobile genetic elements in metal polluted urban soils

Pastured Poultry Production in the United States: Strategies to Balance System Sustainability and Environmental Impact

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