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1. Regulatory networks important for survival of Acinetobacter baumannii within the host

Author:
Allen, Jessie L; Tomlinson, Brooke R; Casella, Leila G; Shaw, Lindsey N
Source:
Current opinion in microbiology 2020 v.55 pp. 74-80
ISSN:
1369-5274
Subject:
resistance genes,   etc   ; Acinetobacter baumannii; antibiotics; humans; patients; transcription factors; virulence;     Show all 7 Subjects
Abstract:
... Acinetobacter baumannii is known for its intrinsic resistance to conventional antibiotic treatment and hypervirulence during infection. This coupled with its extraordinary capacity to survive in myriad harsh environments has led to increasing rates of infection in clinical settings. Numerous studies have characterized the virulence factors and resistance genes in A. baumannii responsible for the d ...
DOI:
10.1016/j.mib.2020.03.001

2. Characterization and source identification of antibiotic resistance genes in the sediments of an interconnected river-lake system

Author:
Chen, Haiyang; Li, Yuezhao; Sun, Wenchao; Song, Liuting; Zuo, Rui; Teng, Yanguo
Source:
Environment international 2020 v.137 pp. 105538
ISSN:
0160-4120
Subject:
antibiotic resistance genes,   etc   ; beta-lactamase; lakes; risk; rivers; sediments;     Show all 6 Subjects
Abstract:
... Antimicrobial resistance has been a global public health concern. The river-lake systems are one of the tightly connected terrestrial ecosystems and, appear to be reservoirs of antibiotic resistant genes (ARGs) and dispersal routes of resistant pathogens because they are easily impacted by human activities. Currently, systematic knowledge on the prevalence, transfer risk and source of ARGs in rive ...
DOI:
10.1016/j.envint.2020.105538

3. Alleviated Antibiotic-Resistant Genes in the Rhizosphere of Agricultural Soils with Low Antibiotic Concentration

Author:
Song, Mengke; Peng, Ke; Jiang, Longfei; Zhang, Dayi; Song, Dandan; Chen, Guoen; Xu, Huijuan; Li, Yongtao; Luo, Chunling
Source:
Journal of agricultural and food chemistry 2020 v.68 no.8 pp. 2457-2466
ISSN:
1520-5118
Subject:
antibiotic resistance genes,   etc   ; agricultural soils; antibiotics; crops; manure amendments; rhizosphere;     Show all 6 Subjects
Abstract:
... The influence of the rhizosphere on the abundance and diversity of antibiotic resistance genes (ARGs) has been recognized but there is a lack of consensus because of broad ranges of plant species and antibiotic concentrations across different habitats and the elusive underlying mechanisms. Here, we profiled antibiotic concentrations and resistomes in the rhizosphere and bulk soils by cultivating 1 ...
DOI:
10.1021/acs.jafc.9b06634

4. Occurrence and genetic diversity of groundnut rosette assistor virus in western Kenya

Author:
Mabele, Anthony Simiyu; Were, Hassan Karakacha; Owuor Ndong'a, Millicent Florence; Mukoye, Benard
Source:
Crop protection 2021 v.139 pp. 105381
ISSN:
0261-2194
Subject:
resistance genes,   etc   ; Aphis craccivora; Arachis hypogaea; DNA libraries; Glycine max; Groundnut rosette assistor virus; Groundnut rosette virus; Phaseolus vulgaris; Physalis peruviana; RNA; Vigna radiata; coat proteins; computer software; cultivars; disease incidence; farms; genetic variation; indicator species; leaves; nucleotide sequences; peanuts; pests; phylogeny; rain; reverse transcriptase polymerase chain reaction; screening; surveys; viruses; Ghana; Kenya; Malawi; Nigeria;     Show all 32 Subjects
Abstract:
... Groundnut (Arachis hypogaea) is an important legume in western Kenya, but yields are low and declining. Pests and diseases are ranked high among the yield reducing factors. Groundnut rosette disease (GRD) is the main disease and can cause up to 100% yield loss. Groundnut rosette disease is transmitted by the groundnut aphid, Aphis craccivora Koch and caused by two synergistic viruses; groundnut ro ...
DOI:
10.1016/j.cropro.2020.105381

5. First report on the pathotype diversity of Phytophthora sojae in Manitoba, Canada

Author:
Henriquez, M.A.; Kim, Y.M.; McLaren, D.L.; Conner, R.L.; Xue, A.; Marchand, G.; Yu, K.; Chang, K.F.; Hwang, S.F.; Strelkov, S.E.; Gossen, B.D.
Source:
Crop protection 2020 v.137 pp. 105236
ISSN:
0261-2194
Subject:
resistance genes,   etc   ; Phytophthora sojae; acreage; cultivars; pathogens; pathotypes; soil quality; soybeans; stem rot; Manitoba;     Show all 10 Subjects
Abstract:
... Phytophthora root and stem rot of soybean is caused by the oomycete pathogen Phytophthora sojae, which can infect plants at all stages of growth when soil conditions favour pathogen development. In Manitoba, the acreage of commercial soybean has increased dramatically in recent years. Root and stem rot caused by P. sojae was first detected in commercial soybean in Manitoba in 2011. The objectives ...
DOI:
10.1016/j.cropro.2020.105236

6. Effects of biochars on the fate of antibiotics and their resistance genes during vermicomposting of dewatered sludge

Author:
Kui, Huang; Jingyang, Chen; Mengxin, Guan; Hui, Xia; Li, Lin
Source:
Journal of hazardous materials 2020 v.397 pp. 122767
ISSN:
0304-3894
Subject:
resistance genes,   etc   ; antibiotics; biochar; corn cobs; pollution; rice hulls; sludge; vermicomposting; vermicomposts;     Show all 9 Subjects
Abstract:
... It is currently still difficult to decrease the high contents of antibiotics and their corresponding antibiotic resistance genes (ARGs) in sludge vermicompost. To decrease the environmental risk of vermicompost as a bio-fertilizer, this study investigated the feasibility of biochar addition to decrease the levels of antibiotics and ARGs during vermicomposting of dewatered sludge. To achieve this, ...
DOI:
10.1016/j.jhazmat.2020.122767

7. Problems of conventional disinfection and new sterilization methods for antibiotic resistance control

Author:
Zhang, Guosheng; Li, Weiying; Chen, Sheng; Zhou, Wei; Chen, Jiping
Source:
Chemosphere 2020 v.254 pp. 126831
ISSN:
0045-6535
Subject:
antibiotic resistance genes,   etc   ; antibiotic resistance; bacteria; chlorine; disinfection; ozone; water treatment;     Show all 7 Subjects
Abstract:
... The problem of bacterial antibiotic resistance has attracted considerable research attention, and the effects of water treatment on antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) are being increasingly investigated. As an indispensable part of the water treatment process, disinfection plays an important role in controlling antibiotic resistance. At present, there were m ...
DOI:
10.1016/j.chemosphere.2020.126831

8. Antimicrobial-resistant microorganisms and their genetic determinants in stormwater: A systematic review

Author:
Hamilton, Kerry A.; Garner, Emily; Joshi, Sayalee; Ahmed, Warish; Ashbolt, Nicholas; Medema, Gertjan; Pruden, Amy
Source:
Current opinion in environmental science & health 2020 v.16 pp. 101-112
ISSN:
2468-5844
Subject:
resistance genes,   etc   ; antibiotic resistance; bacteria; community structure; microbial communities; public health; risk assessment; stormwater; systematic review;     Show all 9 Subjects
Abstract:
... Antibiotic-resistant bacteria and antibiotic resistance genes are abundant in stormwater, yet there is no consensus regarding how to assess their public health risks. We systematically reviewed the literature and identified 15 studies that provided quantitative occurrence and/or abundance information that was linked to stormwater. Sampling and data analysis approaches across studies varied widely, ...
DOI:
10.1016/j.coesh.2020.02.012

9. Elucidating the effect of microbial inoculum and ferric chloride as additives on the removal of antibiotic resistance genes from chicken manure during aerobic composting

Author:
Guo, Honghong; Gu, Jie; Wang, Xiaojuan; Nasir, Mubasher; Yu, Jing; Lei, Liusheng; Wang, Qianzhi
Source:
Bioresource technology 2020 v.309 pp. 122802
ISSN:
0960-8524
Subject:
antibiotic resistance genes,   etc   ; Firmicutes; additives; composting; composts; ferric chloride; inoculum; microbial activity; poultry manure; prediction;     Show all 10 Subjects
Abstract:
... This experiment investigated the effect of adding a microbial inoculum (M) and ferric chloride (F) on the fate of antibiotic resistance genes (ARGs) during chicken manure composting. Adding M and F improved the microbial activity in the compost and facilitated the removal of ARGs, whereas the combined treatment achieved the best results, especially in reducing the enrichment of sul resistance gene ...
DOI:
10.1016/j.biortech.2020.122802

10. The simultaneous antibiotics and nitrogen removal in vertical flow constructed wetlands: Effects of substrates and responses of microbial functions

Author:
Yuan, Yingrui; Yang, Baoshan; Wang, Hui; Lai, Xiaoshuang; Li, Feng; Salam, Mir Md Abdus; Pan, Fuxia; Zhao, Yuqiang
Source:
Bioresource technology 2020 v.310 pp. 123419
ISSN:
0960-8524
Subject:
resistance genes,   etc   ; ammonium nitrogen; antibiotics; biochar; ciprofloxacin; constructed wetlands; manganese; nitrate nitrogen; nitrogen; sulfamethazine; wastewater; zeolites;     Show all 12 Subjects
Abstract:
... A vertical flow constructed wetland (VFCW) packed with the different substrates was designed to remediate the antibiotics in the wastewater. Zeolite (CW-Z) paralleled with Manganese (Mn) ore (CW-M) and biochar (CW-C) were used to enhance the synchronous removal of ciprofloxacin hydrochloride (CIPH), sulfamethazine (SMZ) and nitrogen (N) from the wastewater. The result indicated that CW-M had a sig ...
DOI:
10.1016/j.biortech.2020.123419

11. Struvite-supported biochar composite effectively lowers Cu bio-availability and the abundance of antibiotic-resistance genes in soil

Author:
Li, Yuan; Wang, Xuejiang; Wang, Yuan; Wang, Fei; Xia, Siqing; Zhao, Jianfu
Source:
The Science of the total environment 2020 v.724 pp. 138294
ISSN:
0048-9697
Subject:
antibiotic resistance genes,   etc   ; Actinobacteria; Firmicutes; antibiotic resistance; bacterial communities; bioavailability; biochar; copper; pollution; soil;     Show all 10 Subjects
Abstract:
... The accumulation of heavy metals and the accelerated dissemination of antibiotic-resistance genes (ARGs) in soil receiving long-term manure application are causing worldwide concern. In this study, struvite-supported biochar composite (MAP/BC) obtained by N and P recovery from pig slurry with Mg(OH)₂-modified biochar (Mg(OH)₂/BC) was used as a novel amendment for the remediation of Cu- and ARG-con ...
DOI:
10.1016/j.scitotenv.2020.138294

12. Response of denitrifying community, denitrification genes and antibiotic resistance genes to oxytetracycline stress in polycaprolactone supported solid-phase denitrification reactor

Author:
Feng, Lijuan; Yang, Jingyi; Yu, Hui; Lan, Zeyu; Ye, Xin; Yang, Guangfeng; Yang, Qiao; Zhou, Jiaheng
Source:
Bioresource technology 2020 v.308 pp. 123274
ISSN:
0960-8524
Subject:
antibiotic resistance genes,   etc   ; antibiotic resistance; denitrification; denitrifying microorganisms; lactones; nitrate reduction; nitrates; oxytetracycline; tetracycline; wastewater;     Show all 10 Subjects
Abstract:
... The coexistence of nitrate and antibiotics in wastewater is a common problem. The study aimed to explore the response of denitrifying community, denitrification genes and antibiotic resistance genes (ARGs) to oxytetracycline (OTC) stress in polycaprolactone (PCL) supported solid-phase denitrification (SPD) reactors. Complete nitrate reduction (greater than99%) was achieved in SPD system with OTC s ...
DOI:
10.1016/j.biortech.2020.123274

13. The profile of antibiotic resistance genes in pig manure composting shaped by composting stage: Mesophilic-thermophilic and cooling-maturation stages

Author:
Cao, Rukun; Wang, Jian; Ben, Weiwei; Qiang, Zhimin
Source:
Chemosphere 2020 v.250 pp. 126181
ISSN:
0045-6535
Subject:
antibiotic resistance genes,   etc   ; Mycobacterium; antibiotic resistance; bacteria; bacterial communities; composting; pathogens; physicochemical properties; pig manure;     Show all 9 Subjects
Abstract:
... The variation of antibiotic resistance genes (ARGs) and influential factors in pig manure composting were investigated by conducting simulated composting tests using four different supplement materials (wheat straw, corn straw, poplar sawdust and spent mushroom). The results show that the relative abundance of total ARGs increased by 0.19–1.61 logs after composting, and tetX, sulI, sulII, dfrA1 an ...
DOI:
10.1016/j.chemosphere.2020.126181

14. Occurrence and distribution of antibiotic resistance genes in sediments in a semi-enclosed continental shelf sea

Author:
Zhang, Yuxuan; Lu, Jian; Wu, Jun; Wang, Jianhua; Lin, Yichen
Source:
The Science of the total environment 2020 v.720 pp. 137712
ISSN:
0048-9697
Subject:
antibiotic resistance genes,   etc   ; bacteria; bacterial communities; beta-lactams; coasts; continental shelf; principal component analysis; sediments;     Show all 8 Subjects
Abstract:
... Extensive and improper overuse of antibiotics resulted in the prevalence of antibiotic resistance genes (ARGs). As the typical semi-enclosed continental shelf sea, the Bohai Sea has been considered as one of the most polluted marine areas in China. However, no comprehensive investigation on the spatial distribution of ARGs in sediments from the Bohai Sea has been reported. A large-scale sampling w ...
DOI:
10.1016/j.scitotenv.2020.137712

15. Evaluation of the fate of nutrients, antibiotics, and antibiotic resistance genes in sludge treatment wetlands

Author:
Ma, Junwen; Cui, Yubo; Li, Aimin; Zhang, Wanjun; Liang, Junyu; Wang, Shiquan; Zhang, Lei
Source:
The Science of the total environment 2020 v.712 pp. 136370
ISSN:
0048-9697
Subject:
antibiotic resistance genes,   etc   ; aeration; azithromycin; integrases; nutrients; oxytetracycline; pollutants; sludge; sulfadiazine; sulfamethoxazole; tetracycline; wetlands;     Show all 12 Subjects
Abstract:
... The aim of this research was to analyze the elimination of nutrients, antibiotics as well as antibiotic resistance genes (ARGs) in different sludge treatment wetlands (STWs) with or without reeds and aeration tubes. Five antibiotics, including oxytetracycline, tetracycline, azithromycin, sulfamethoxazole, and sulfadiazine; five ARGs, including two tetracycline ARGs (tetC and tetA), one macrolide A ...
DOI:
10.1016/j.scitotenv.2019.136370

16. Agrobacterium-mediated transformation of arthroconidia obtained from the edible mushroom Hypsizygus marmoreus

Author:
Bao, Dapeng; Huang, Zhiheng; Li, Yan; Zhou, Chenli; Li, Yan; Wan, Jianing; Tang, Lihua; Mao, Wenjun; Wang, Ying; Gong, Ming; Zou, Gen; Honda, Yoichi; Yang, Ruiheng; Shang, Junjun
Source:
Journal of microbiological methods 2020 v.171 pp. 105878
ISSN:
0167-7012
Subject:
resistance genes,   etc   ; DNA; Hypsizygus marmoreus; Pleurotus eryngii; beta-glucuronidase; carboxin; conidia; fungicide resistance; mushrooms;     Show all 9 Subjects
Abstract:
... Using the carboxin resistance gene from Pleurotus eryngii as a selective marker, we introduced foreign DNA into the arthroconidia of Hypsizygus marmoreus through Agrobacterium-mediated transformation. The function of the exogenous GUS (β-glucuronidase) gene driven by the CaMV35S promoter was detected in the transformants. ...
DOI:
10.1016/j.mimet.2020.105878

17. Distribution of oxytetracycline resistance genes in E. coli isolated from pigeon faecal samples

Author:
Nouri Gharajalar, Sahar; Shahbazi, Parisa
Source:
Journal of exotic pet medicine 2020 v.33 pp. 14-17
ISSN:
1557-5063
Subject:
resistance genes,   etc   ; Escherichia coli; antibiotic resistance; bacteria; feces; oxytetracycline; pigeons; polymerase chain reaction; tetracycline;     Show all 9 Subjects
Abstract:
... Tetracycline- resistant bacteria have emerged due to the selective pressure of antimicrobial use. The aim of this study was to determine the prevalence of oxytetracycline resistance of Escherichia coli from pigeon faecal samples. All strains were examined for the presence and types of oxytetracycline resistance determinants using disc diffusion and polymerase chain reaction methods. Of 50 faecal E ...
DOI:
10.1053/j.jepm.2019.12.005

18. Fungicides enhanced the abundance of antibiotic resistance genes in greenhouse soil

Author:
Zhang, Houpu; Chen, Shiyu; Zhang, Qianke; Long, Zhengnan; Yu, Yunlong; Fang, Hua
Source:
Environmental pollution 2020 v.259 pp. 113877
ISSN:
0269-7491
Subject:
antibiotic resistance genes,   etc   ; Actinomyces; fungicides; greenhouse soils; horizontal gene transfer; interspersed repetitive sequences; mountain soils; transposases;     Show all 8 Subjects
Abstract:
... Long-term substantial application of fungicides in greenhouse cultivation led to residual pollution in soils and then altered soil microbial community. However, it is unclear whether residual fungicides could affect the diversity and abundance of antibiotic resistance genes (ARGs) in greenhouse soils. Here, the dissipation of fungicides and its impact on the abundance of ARGs were determined using ...
DOI:
10.1016/j.envpol.2019.113877

19. Mobile genetic elements in potential host microorganisms are the key hindrance for the removal of antibiotic resistance genes in industrial-scale composting with municipal solid waste

Author:
Tang, Zhurui; Xi, Beidou; Huang, Caihong; Tan, Wenbing; Li, Wenxuan; Zhao, Xinyu; Liu, Kexin; Xia, Xiangqin
Source:
Bioresource technology 2020 v.301 pp. 122723
ISSN:
0960-8524
Subject:
antibiotic resistance genes,   etc   ; Actinobacteria; Firmicutes; bacteria; bacterial communities; composting; interspersed repetitive sequences; municipal solid waste; pH;     Show all 9 Subjects
Abstract:
... During the municipal solid waste (MSW) composting, antibiotic resistance genes (ARGs) could be one of the concerns to hinder the application of MSW composting. However, the understanding of enrichment and dissemination of ARGs during the industrial-scale composting is still not clear. Hence, this study aimed to investigate the ARG distributions at different stages in an industrial-scale MSW compos ...
DOI:
10.1016/j.biortech.2019.122723

20. New approach to identify colistin‐resistant Pseudomonas aeruginosa by high‐resolution melting curve analysis assay

Author:
Tahmasebi, H.; Dehbashi, S.; Arabestani, M.R.
Source:
Letters in applied microbiology 2020 v.70 no.4 pp. 290-299
ISSN:
0266-8254
Subject:
resistance genes,   etc   ; Pseudomonas aeruginosa; antibiotics; bacteria; computer software; health services; melting; melting curve analysis; plasmids; temperature;     Show all 10 Subjects
Abstract:
... Colistin‐resistant Pseudomonas aeruginosa (CRPA), as a health care system threat, is increasing globally. This study aimed was to determine CRPA by high‐resolution melting curve (HRM) analysis method. The HRM method was done on standard strains of P. aeruginosa and CRPA strains. Ninefold serial dilutions of known genomic DNA (gDNA) and plasmid DNA (pDNA) concentrations, extracted from P. aeruginos ...
DOI:
10.1111/lam.13270