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Nguyen LTT, Park AR, Van Le V, Hwang I, Kim JC. Exploration of a multifunctional biocontrol agent Streptomyces sp. JCK-8055 for the management of apple fire blight. Appl Microbiol Biotechnol 2024; 108:49. [PMID: 38183485 DOI: 10.1007/s00253-023-12874-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/17/2023] [Accepted: 11/05/2023] [Indexed: 01/08/2024]
Abstract
Apple fire blight, caused by the bacterium Erwinia amylovora, is a devastating disease of apple and pear trees. Biological control methods have attracted much attention from researchers to manage plant diseases as they are eco-friendly and viable alternatives to synthetic pesticides. Herein, we isolated Streptomyces sp. JCK-8055 from the root of pepper and investigated its mechanisms of action against E. amylovora. Streptomyces sp. JCK-8055 produced aureothricin and thiolutin, which antagonistically affect E. amylovora. JCK-8055 and its two active metabolites have a broad-spectrum in vitro activity against various phytopathogenic bacteria and fungi. They also effectively suppressed tomato bacterial wilt and apple fire blight in in vivo experiments. Interestingly, JCK-8055 colonizes roots as a tomato seed coating and induces apple leaf shedding at the abscission zone, ultimately halting the growth of pathogenic bacteria. Additionally, JCK-8055 can produce the plant growth regulation hormone indole-3-acetic acid (IAA) and hydrolytic enzymes, including protease, gelatinase, and cellulase. JCK-8055 treatment also triggered the expression of salicylate (SA) and jasmonate (JA) signaling pathway marker genes, such as PR1, PR2, and PR3. Overall, our findings demonstrate that Streptomyces sp. JCK-8055 can control a wide range of plant diseases, particularly apple fire blight, through a combination of mechanisms such as antibiosis and induced resistance, highlighting its excellent potential as a biocontrol agent. KEY POINTS: • JCK-8055 produces the systemic antimicrobial metabolites, aureothricin, and thiolutin. • JCK-8055 treatment upregulates PR gene expression in apple plants against E. amylovora. • JCK-8055 controls plant diseases with antibiotics and induced resistance.
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Affiliation(s)
- Loan Thi Thanh Nguyen
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Ae Ran Park
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Ve Van Le
- Cell Factory Research Centre, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Inmin Hwang
- Hygienic Safety and Analysis Center, World Institute of Kimchi, Gwangju, 61755, Republic of Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, 61186, Republic of Korea.
- JAN153 Biotech Incorporated, Gwangju, 61186, Republic of Korea.
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2
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Zhong J, Zhang X, Xu J, Zhou L, Zhou Q, Zhai H. A highly sensitive luminescent aptasensor utilizing MOF-74-co encapsulation of luminol in a 'turn-on' mode for streptomycin detection. Food Chem 2024; 458:140306. [PMID: 38968710 DOI: 10.1016/j.foodchem.2024.140306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/27/2024] [Accepted: 06/30/2024] [Indexed: 07/07/2024]
Abstract
This study focused on detecting streptomycin (STR) residues using a luminescent aptasensor encapsulated with aptamer. Utilizing MOF-74-Co with peroxidase-like activity, luminol was enclosed in its pores. The specific STR aptamer acted as a gatekeeper, ensuring excellent performance. Upon exposure to STR, the aptamers detached, releasing luminol and amplifying the luminescent signal through MOF-74-Co catalytic activity. A linear relationship between fluorescence intensity and STR concentration (50 nM ∼ 5 × 106 nM) was established, with a limit of detection of 0.065 nM. The sensor exhibited high selectivity for STR even in the presence of other aminoglycoside antibiotics. Applied to tea, egg, and honey samples, the sensor showed recovery rates of 91.38-100.2%, meeting safety standards. This MOF-based aptasensor shows promise for detecting harmful residues.
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Affiliation(s)
- Jiapeng Zhong
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Xiaohui Zhang
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Jin Xu
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Lin Zhou
- School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Advanced Drug Delivery, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Qing Zhou
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Haiyun Zhai
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Advanced Drug Delivery, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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3
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Boutin S, Lussier E, Laforest-Lapointe I. Investigating the spatiotemporal dynamics of apple tree phyllosphere bacterial and fungal communities across cultivars in orchards. Can J Microbiol 2024; 70:238-251. [PMID: 38452350 DOI: 10.1139/cjm-2023-0215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
The phyllosphere, a reservoir of diverse microbial life associated with plant health, harbors microbial communities that are subject to various complex ecological processes acting at multiple scales. In this study, we investigated the determinants of the spatiotemporal variation in bacterial and fungal communities within the apple tree phyllosphere, employing 16S and ITS amplicon sequencing. Our research assessed the impact of key factors-plant compartment, site, time, and cultivar-on the composition and diversity of leaf and flower microbial communities. Our analyses, based on samples collected from three cultivars in three orchards in 2022, revealed that site and time are the strongest drivers of apple tree phyllosphere microbial communities. Conversely, plant compartment and cultivar exhibited minor roles in explaining community composition and diversity. Predominantly, bacterial communities comprised Hymenobacter (25%) and Sphingomonas (10%), while the most relatively abundant fungal genera included Aureobasidium (27%) and Sporobolomyces (10%). Additionally, our results show a gradual decrease in alpha-diversity throughout the growth season. These findings emphasize the necessity to consider local microbial ecology dynamics in orchards, especially as many groups worldwide aim for the development of biocontrol strategies (e.g., by manipulating plant-microbe interactions). More research is needed to improve our understanding of the determinants of time and site-specific disparities within apple tree phyllosphere microbial communities across multiple years, locations, and cultivars.
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Affiliation(s)
- Sophie Boutin
- Département de biologie, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
- Centre SÈVE, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Ema Lussier
- Département de biologie, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
- Centre SÈVE, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Isabelle Laforest-Lapointe
- Département de biologie, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
- Centre SÈVE, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
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4
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Batuman O, Britt-Ugartemendia K, Kunwar S, Yilmaz S, Fessler L, Redondo A, Chumachenko K, Chakravarty S, Wade T. The Use and Impact of Antibiotics in Plant Agriculture: A Review. PHYTOPATHOLOGY 2024; 114:885-909. [PMID: 38478738 DOI: 10.1094/phyto-10-23-0357-ia] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Growers have depended on the specificity and efficacy of streptomycin and oxytetracycline as a part of their plant disease arsenal since the middle of the 20th century. With climate change intensifying plant bacterial epidemics, the established success of these antibiotics remains threatened. Our strong reliance on certain antibiotics for devastating diseases eventually gave way to resistance development. Although antibiotics in plant agriculture equal to less than 0.5% of overall antibiotic use in the United States, it is still imperative for humans to continue to monitor usage, environmental residues, and resistance in bacterial populations. This review provides an overview of the history and use, resistance and mitigation, regulation, environmental impact, and economics of antibiotics in plant agriculture. Bacterial issues, such as the ongoing Huanglongbing (citrus greening) epidemic in Florida citrus production, may need antibiotics for adequate control. Therefore, preserving the efficacy of our current antibiotics by utilizing more targeted application methods, such as trunk injection, should be a major focus. [Formula: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.
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Affiliation(s)
- Ozgur Batuman
- Department of Plant Pathology, Southwest Florida Research and Education Center, University of Florida, Immokalee, FL
| | - Kellee Britt-Ugartemendia
- Department of Plant Pathology, Southwest Florida Research and Education Center, University of Florida, Immokalee, FL
| | - Sanju Kunwar
- Department of Plant Pathology, Southwest Florida Research and Education Center, University of Florida, Immokalee, FL
| | - Salih Yilmaz
- Department of Plant Pathology, Southwest Florida Research and Education Center, University of Florida, Immokalee, FL
| | - Lauren Fessler
- Department of Plant Pathology, Southwest Florida Research and Education Center, University of Florida, Immokalee, FL
| | - Ana Redondo
- Department of Plant Pathology, Southwest Florida Research and Education Center, University of Florida, Immokalee, FL
| | - Kseniya Chumachenko
- Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL
| | - Shourish Chakravarty
- Department of Food and Resource Economics, Southwest Florida Research and Education Center, University of Florida, Immokalee, FL
| | - Tara Wade
- Department of Food and Resource Economics, Southwest Florida Research and Education Center, University of Florida, Immokalee, FL
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5
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Rui X, Gong H, Yuan H, Zhu N. Distribution, removal and ecological risk assessment of antibiotics in leachate from municipal solid waste incineration plants in Shanghai, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165894. [PMID: 37524176 DOI: 10.1016/j.scitotenv.2023.165894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023]
Abstract
Leachate from Municipal Solid Waste (MSW) incineration plants contains multiple antibiotics. However, current knowledge of antibiotics in such leachate is very limited compared to landfill leachate. In this study, the distribution, removal and ecological risks of 8 sulfonamides (SAs), 4 quinolones (FQs), and 4 macrolides (MLs) antibiotics in leachate from three MSW incineration plants in Shanghai were investigated. The results showed that 12 types of target antibiotics were detected at high concentrations (7737.3-13,758.7 ng/L) in the fresh leachate, exceeding the concentrations reported for landfill leachate. FQs were the dominant antibiotics detected in all three fresh leachates, accounting for >60 % of the total detected concentrations. The typical "anaerobic-anoxic/aerobic-anoxic/aerobic-ultrafiltration" treatment process removed the target antibiotics effectively (89.0 %-93.4 %), of which the anaerobic unit and the primary anoxic/aerobic unit were the most important antibiotic removal units. Biodegradation was considered to be the dominant removal mechanism, removing 78.11 %-92.37 % of antibiotics, whereas sludge adsorption only removed 1.02 %-10.89 %. Antibiotic removal was significantly correlated with leachate COD, pH, TN, and NH3-N, indicating that they may be influential factors for antibiotic removal. Ecological risk assessment revealed that ofloxacin (OFX) and enrofloxacin (EFX) in the treated leachate still posed high risks to algae and crustaceans. This research provides insights into the fate of antibiotics in leachate.
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Affiliation(s)
- Xuan Rui
- Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Huabo Gong
- Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haiping Yuan
- Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Nanwen Zhu
- Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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6
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Jo SJ, Kim SG, Park J, Lee YM, Giri SS, Lee SB, Jung WJ, Hwang MH, Park JH, Roh E, Park SC. Optimizing the formulation of Erwinia bacteriophages for improved UV stability and adsorption on apple leaves. Heliyon 2023; 9:e22034. [PMID: 38034629 PMCID: PMC10682131 DOI: 10.1016/j.heliyon.2023.e22034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 12/02/2023] Open
Abstract
Fire blight is a bacterial disease that affects plants of the Rosaceae family and causes significant economic losses worldwide. Although antibiotics have been used to control the disease, concerns about their environmental impact and the potential to promote antibiotic resistance have arisen. Bacteriophages are being investigated as an alternative to antibiotics; however, their efficacy can be affected by environmental stresses, such as UV radiation. In this study, we optimized the formulation of Erwinia phages to enhance their stability in the field, focusing on improving their UV stability and adsorption using adjuvants. Our results confirmed that 4.5 % polysorbate 80 and kaolin improve phage stability under UV stress, resulting in an 80 % increase in PFU value and improved UV protection efficacy. Adsorption assays also demonstrated that polysorbate 80 and kaolin improved the absorption efficiency, with phages detected in plant for up to two weeks. These findings demonstrate the effectiveness of the auxiliary formulation of Erwinia bacteriophages against environmental stress.
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Affiliation(s)
- Su Jin Jo
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sang Guen Kim
- Department of Biological Sciences, Kyonggi University, Suwon, 16227, Republic of Korea
| | - Jungkum Park
- Crop Protection Division, National Institute of Agriculture Sciences, Rural Development Administration, Wanju, 55365, Republic of Korea
| | - Young Min Lee
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sib Sankar Giri
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sung Bin Lee
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Won Joon Jung
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Mae Hyun Hwang
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jae Hong Park
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Eunjung Roh
- Crop Protection Division, National Institute of Agriculture Sciences, Rural Development Administration, Wanju, 55365, Republic of Korea
| | - Se Chang Park
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
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7
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Verhaegen M, Bergot T, Liebana E, Stancanelli G, Streissl F, Mingeot-Leclercq MP, Mahillon J, Bragard C. On the use of antibiotics to control plant pathogenic bacteria: a genetic and genomic perspective. Front Microbiol 2023; 14:1221478. [PMID: 37440885 PMCID: PMC10333595 DOI: 10.3389/fmicb.2023.1221478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 06/08/2023] [Indexed: 07/15/2023] Open
Abstract
Despite growing attention, antibiotics (such as streptomycin, oxytetracycline or kasugamycin) are still used worldwide for the control of major bacterial plant diseases. This raises concerns on their potential, yet unknown impact on antibiotic and multidrug resistances and the spread of their genetic determinants among bacterial pathogens. Antibiotic resistance genes (ARGs) have been identified in plant pathogenic bacteria (PPB), with streptomycin resistance genes being the most commonly reported. Therefore, the contribution of mobile genetic elements (MGEs) to their spread among PPB, as well as their ability to transfer to other bacteria, need to be further explored. The only well-documented example of ARGs vector in PPB, Tn5393 and its highly similar variants (carrying streptomycin resistance genes), is concerning because of its presence outside PPB, in Salmonella enterica and Klebsiella pneumoniae, two major human pathogens. Although its structure among PPB is still relatively simple, in human- and animal-associated bacteria, Tn5393 has evolved into complex associations with other MGEs and ARGs. This review sheds light on ARGs and MGEs associated with PPB, but also investigates the potential role of antibiotic use in resistance selection in plant-associated bacteria.
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Affiliation(s)
- Marie Verhaegen
- Laboratory of Food and Environmental Microbiology, Earth and Life Institute, Catholic University of Louvain (UCLouvain), Louvain-la-Neuve, Belgium
| | - Thomas Bergot
- Laboratory of Food and Environmental Microbiology, Earth and Life Institute, Catholic University of Louvain (UCLouvain), Louvain-la-Neuve, Belgium
| | | | | | | | - Marie-Paule Mingeot-Leclercq
- Cellular and Molecular Pharmacology Unit, Louvain Drug Research Institute, UCLouvain, Woluwe-Saint-Lambert, Belgium
| | - Jacques Mahillon
- Laboratory of Food and Environmental Microbiology, Earth and Life Institute, Catholic University of Louvain (UCLouvain), Louvain-la-Neuve, Belgium
| | - Claude Bragard
- Plant Health Laboratory, Earth and Life Institute, UCLouvain, Louvain-la-Neuve, Belgium
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8
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Sagar P, Aseem A, Banjara SK, Veleri S. The role of food chain in antimicrobial resistance spread and One Health approach to reduce risks. Int J Food Microbiol 2023; 391-393:110148. [PMID: 36868045 DOI: 10.1016/j.ijfoodmicro.2023.110148] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 01/14/2023] [Accepted: 02/18/2023] [Indexed: 02/26/2023]
Abstract
The incidence of antimicrobial resistance (AMR) is rapidly spreading worldwide. It is depleting the repertoire of antibiotics in use but the pace of development of new antibiotics is stagnant for decades. Annually, millions of people are killed by AMR. This alarming situation urged both scientific and civil bodies to take steps to curb AMR as a top priority. Here we review the various sources of AMR in the environment, especially focusing on the food chain. Food chain inculcates pathogens with AMR genes and serves as a conduit for its transmission. In certain countries, the antibiotics are more used in livestock than in humans. It is also used in agriculture crops of high value products. The indiscriminate use of antibiotics in livestock and agriculture increased rapid emergence of AMR pathogens. In addition, in many countries nosocomial settings are spewing AMR pathogens, which is a serious health hazard. Both the developed and low and middle income countries (LMIC) face the phenomenon of AMR. Therefore, a comprehensive approach for monitoring all sectors of life is required to identify the emerging trend of AMR in environment. AMR genes' mode of action must be understood to develop strategies to reduce risk. The new generation sequencing technologies, metagenomics and bioinformatics capabilities can be resorted to quickly identify and characterize AMR genes. The sampling for AMR monitoring can be done from multiples nodes of the food chain as envisioned and promoted by the WHO, FAO, OIE and UNEP under the One Health approach to overcome threat of AMR pathogens.
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Affiliation(s)
- Prarthi Sagar
- Drug Safety Division, ICMR-National Institute of Nutrition, Hyderabad 500007, India
| | - Ajmal Aseem
- Drug Safety Division, ICMR-National Institute of Nutrition, Hyderabad 500007, India
| | | | - Shobi Veleri
- Drug Safety Division, ICMR-National Institute of Nutrition, Hyderabad 500007, India.
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9
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Ryu DK, Adhikari M, Choi DH, Jun KJ, Kim DH, Kim CR, Kang MK, Park DH. Copper-Based Compounds against Erwinia amylovora: Response Parameter Analysis and Suppression of Fire Blight in Apple. THE PLANT PATHOLOGY JOURNAL 2023; 39:52-61. [PMID: 36760049 PMCID: PMC9929174 DOI: 10.5423/ppj.oa.07.2022.0100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/28/2022] [Accepted: 11/23/2022] [Indexed: 06/18/2023]
Abstract
Fire blight, caused by Erwinia amylovora, is one of the major bacterial disease of apple and pear, causing enormous economic losses worldwide. Several control measures against E. amylovora have been reported till date, however, none of them have proved to be effective significantly against the pathogen. In this study, mechanisms of the copper-based control agents (CBCAs): copper oxychloride (COCHL), copper oxide (COX), copper hydroxide (CHY), copper sulfate basic (CSB), and tribasic copper sulfate (TCS) and their disease severity reduction efficacy against E. amylovora were analyzed. Bis-1,3-dibutylbarbituric acid trimethine oxonol, carboxyl fluorescein diacetate succinimidyl ester, and 5-cyano-2,3-ditolyl tetrazolium chloride staining were used to check the damage of membrane potential, cytoplasmic pHin, and respiration of CBCAs-treated E. amylovora, respectively. High disturbance in the membrane potential of E. amylovora was found under COX and COCHL treatments. Similarly, higher significant changes in the inner cytoplasmic pHin were observed under COX, COCHL, and TCS treatment. CHY and COCHL-treated E. amylovora showed a significant reduction in respiration. In vitro bioassay results revealed that CHY, CSB, and TCS at 2,000 ppm reduced the severity of fire blight both in pre- and post-treatment of CBCAs in immature apple fruits and seedlings. Overall, the most effective CBCAs against E. amylovora could be CHY at 2,000 ppm as its showed inhibition mechanisms and disease severity reduction.
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Affiliation(s)
- Duck Kyu Ryu
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341,
Korea
| | - Mahesh Adhikari
- Applied Biology Program, Division of Bioresource Sciences, Kangwon National University, Chuncheon 24341,
Korea
| | - Dong Hyuk Choi
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341,
Korea
| | - Kyung Jin Jun
- Crop Protection R&D Center, Farmhannong Ltd., Nonsan 33010,
Korea
| | - Do Hyoung Kim
- Crop Protection R&D Center, Farmhannong Ltd., Nonsan 33010,
Korea
| | - Chae Ryeong Kim
- Crop Protection R&D Center, Farmhannong Ltd., Nonsan 33010,
Korea
| | - Min Kyu Kang
- Crop Protection R&D Center, Farmhannong Ltd., Nonsan 33010,
Korea
| | - Duck Hwan Park
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341,
Korea
- Applied Biology Program, Division of Bioresource Sciences, Kangwon National University, Chuncheon 24341,
Korea
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10
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Götze S, Vij R, Burow K, Thome N, Urbat L, Schlosser N, Pflanze S, Müller R, Hänsch VG, Schlabach K, Fazlikhani L, Walther G, Dahse HM, Regestein L, Brunke S, Hube B, Hertweck C, Franken P, Stallforth P. Ecological Niche-Inspired Genome Mining Leads to the Discovery of Crop-Protecting Nonribosomal Lipopeptides Featuring a Transient Amino Acid Building Block. J Am Chem Soc 2023; 145:2342-2353. [PMID: 36669196 PMCID: PMC9897216 DOI: 10.1021/jacs.2c11107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Indexed: 01/22/2023]
Abstract
Investigating the ecological context of microbial predator-prey interactions enables the identification of microorganisms, which produce multiple secondary metabolites to evade predation or to kill the predator. In addition, genome mining combined with molecular biology methods can be used to identify further biosynthetic gene clusters that yield new antimicrobials to fight the antimicrobial crisis. In contrast, classical screening-based approaches have limitations since they do not aim to unlock the entire biosynthetic potential of a given organism. Here, we describe the genomics-based identification of keanumycins A-C. These nonribosomal peptides enable bacteria of the genus Pseudomonas to evade amoebal predation. While being amoebicidal at a nanomolar level, these compounds also exhibit a strong antimycotic activity in particular against the devastating plant pathogen Botrytis cinerea and they drastically inhibit the infection of Hydrangea macrophylla leaves using only supernatants of Pseudomonas cultures. The structures of the keanumycins were fully elucidated through a combination of nuclear magnetic resonance, tandem mass spectrometry, and degradation experiments revealing an unprecedented terminal imine motif in keanumycin C extending the family of nonribosomal amino acids by a highly reactive building block. In addition, chemical synthesis unveiled the absolute configuration of the unusual dihydroxylated fatty acid of keanumycin A, which has not yet been reported for this lipodepsipeptide class. Finally, a detailed genome-wide microarray analysis of Candida albicans exposed to keanumycin A shed light on the mode-of-action of this potential natural product lead, which will aid the development of new pharmaceutical and agrochemical antifungals.
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Affiliation(s)
- Sebastian Götze
- Department
of Paleobiotechnology, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Raghav Vij
- Department
of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural
Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Katja Burow
- Research
Centre for Horticultural Crops (FGK), Fachhochschule
Erfurt, Kühnhäuser
Straße 101, 99090 Erfurt, Germany
| | - Nicola Thome
- Department
of Paleobiotechnology, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Lennart Urbat
- Department
of Paleobiotechnology, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Nicolas Schlosser
- Bio
Pilot Plant, Leibniz Institute for Natural Product Research and Infection
Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Sebastian Pflanze
- Department
of Paleobiotechnology, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Rita Müller
- Department
of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural
Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Veit G. Hänsch
- Department
of Biomolecular Chemistry, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Kevin Schlabach
- Department
of Paleobiotechnology, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Leila Fazlikhani
- Research
Centre for Horticultural Crops (FGK), Fachhochschule
Erfurt, Kühnhäuser
Straße 101, 99090 Erfurt, Germany
| | - Grit Walther
- National
Reference Center for Invasive Fungal Infections, Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Hans-Martin Dahse
- Department
of Infection Biology, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Lars Regestein
- Bio
Pilot Plant, Leibniz Institute for Natural Product Research and Infection
Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Sascha Brunke
- Department
of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural
Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Bernhard Hube
- Department
of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural
Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Christian Hertweck
- Department
of Biomolecular Chemistry, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Philipp Franken
- Research
Centre for Horticultural Crops (FGK), Fachhochschule
Erfurt, Kühnhäuser
Straße 101, 99090 Erfurt, Germany
- Molecular
Phytopathology, Friedrich Schiller University, 07745 Jena, Germany
| | - Pierre Stallforth
- Department
of Paleobiotechnology, Leibniz Institute for Natural Product Research
and Infection Biology, Hans Knöll
Institute, Beutenbergstraße 11a, 07745 Jena, Germany
- Faculty
of Chemistry and Earth Sciences, Institute of Organic Chemistry and
Macromolecular Chemistry, Friedrich Schiller
University Jena, Humboldtstraße 10, 07743 Jena, Germany
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11
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Pereira C, Warsi OM, Andersson DI. Pervasive Selection for Clinically Relevant Resistance and Media Adaptive Mutations at Very Low Antibiotic Concentrations. Mol Biol Evol 2023; 40:6983656. [PMID: 36627817 PMCID: PMC9887637 DOI: 10.1093/molbev/msad010] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/24/2022] [Accepted: 01/06/2023] [Indexed: 01/12/2023] Open
Abstract
Experimental evolution studies have shown that weak antibiotic selective pressures (i.e., when the antibiotic concentrations are far below the minimum inhibitory concentration, MIC) can select resistant mutants, raising several unanswered questions. First, what are the lowest antibiotic concentrations at which selection for de novo resistance mutations can occur? Second, with weak antibiotic selections, which other types of adaptive mutations unrelated to the antibiotic selective pressure are concurrently enriched? Third, are the mutations selected under laboratory settings at subMIC also observed in clinical isolates? We addressed these questions using Escherichia coli populations evolving at subMICs in the presence of either of four clinically used antibiotics: fosfomycin, nitrofurantoin, tetracycline, and ciprofloxacin. Antibiotic resistance evolution was investigated at concentrations ranging from 1/4th to 1/2000th of the MIC of the susceptible strain (MICsusceptible). Our results show that evolution was rapid across all the antibiotics tested, and selection for fosfomycin- and nitrofurantoin-resistant mutants was observed at a concentration as low as 1/2000th of MICsusceptible. Several of the evolved resistant mutants showed increased growth yield and exponential growth rates, and outcompeted the susceptible ancestral strain in the absence of antibiotics as well, suggesting that adaptation to the growth environment occurred in parallel with the selection for resistance. Genomic analysis of the resistant mutants showed that several of the mutations selected under these conditions are also found in clinical isolates, demonstrating that experimental evolution at very low antibiotic levels can help in identifying novel mutations that contribute to bacterial adaptation during subMIC exposure in real-life settings.
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Affiliation(s)
- Catia Pereira
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
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12
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Brunn A, Kadri-Alabi Z, Moodley A, Guardabassi L, Taylor P, Mateus A, Waage J. Characteristics and Global Occurrence of Human Pathogens Harboring Antimicrobial Resistance in Food Crops: A Scoping Review. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.824714] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BackgroundThe role of the crop environment as a conduit for antimicrobial resistance (AMR) through soil, water, and plants has received less attention than other sectors. Food crops may provide a link between the agro-environmental reservoir of AMR and acquisition by humans, adding to existing food safety hazards associated with microbial contamination of food crops.ObjectivesThe objectives of this review were: (1) to use a systematic methodology to characterize AMR in food crop value chains globally, and (2) to identify knowledge gaps in understanding exposure risks to humans.MethodsFour bibliographic databases were searched using synonyms of AMR in food crop value chains. Following two-stage screening, phenotypic results were extracted and categorized into primary and secondary combinations of acquired resistance in microbes of concern based on established prioritization. Occurrence of these pathogen-AMR phenotype combinations were summarized by sample group, value chain stage, and world region. Sub-analyses on antimicrobial resistance genes (ARG) focused on extended-spectrum beta-lactamase and tetracycline resistance genes.ResultsScreening of 4,455 citations yielded 196 studies originating from 49 countries, predominantly in Asia (89 studies) and Africa (38). Observations of pathogen-phenotype combinations of interest were reported in a subset of 133 studies (68%). Primary combinations, which include resistance to antimicrobials of critical importance to human medicine varied from 3% (carbapenem resistance) to 13% (fluoroquinolones), whereas secondary combinations, which include resistance to antimicrobials also used in agriculture ranged from 14% (aminoglycoside resistance) to 20% (aminopenicillins). Salad crops, vegetables, and culinary herbs were the most sampled crops with almost twice as many studies testing post-harvest samples. Sub-analysis of ARG found similar patterns corresponding to phenotypic results.DiscussionThese results suggest that acquired AMR in opportunistic and obligate human pathogens is disseminated throughout food crop value chains in multiple world regions. However, few longitudinal studies exist and substantial heterogeneity in sampling methods currently limit quantification of exposure risks to consumers. This review highlights the need to include agriculturally-derived AMR in monitoring food safety risks from plant-based foods, and the challenges facing its surveillance.
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13
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Peil A, Emeriewen OF, Khan A, Kostick S, Malnoy M. Status of fire blight resistance breeding in Malus. JOURNAL OF PLANT PATHOLOGY 2021; 103:3-12. [PMID: 0 DOI: 10.1007/s42161-020-00581-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 05/21/2020] [Indexed: 05/20/2023]
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14
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Schröpfer S, Vogt I, Broggini GAL, Dahl A, Richter K, Hanke MV, Flachowsky H, Peil A. Transcriptional profile of AvrRpt2 EA-mediated resistance and susceptibility response to Erwinia amylovora in apple. Sci Rep 2021; 11:8685. [PMID: 33888770 PMCID: PMC8062453 DOI: 10.1038/s41598-021-88032-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 04/01/2021] [Indexed: 11/25/2022] Open
Abstract
Most of the commercial apple cultivars are highly susceptible to fire blight, which is the most devastating bacterial disease affecting pome fruits. Resistance to fire blight is described especially in wild Malus accessions such as M. × robusta 5 (Mr5), but the molecular basis of host resistance response to the pathogen Erwinia amylovora is still largely unknown. The bacterial effector protein AvrRpt2EA was found to be the key determinant of resistance response in Mr5. A wild type E. amylovora strain and the corresponding avrRpt2EA deletion mutant were used for inoculation of Mr5 to induce resistance or susceptible response, respectively. By comparison of the transcriptome of both responses, 211 differentially expressed genes (DEGs) were identified. We found that heat-shock response including heat-shock proteins (HSPs) and heat-shock transcription factors (HSFs) are activated in apple specifically in the susceptible response, independent of AvrRpt2EA. Further analysis on the expression progress of 81 DEGs by high-throughput real-time qPCR resulted in the identification of genes that were activated after inoculation with E. amylovora. Hence, a potential role of these genes in the resistance to the pathogen is postulated, including genes coding for enzymes involved in formation of flavonoids and terpenoids, ribosome-inactivating enzymes (RIPs) and a squamosa promoter binding-like (SPL) transcription factor.
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Affiliation(s)
- Susan Schröpfer
- Institute for Breeding Research on Fruit Crops, Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Pillnitzer Platz 3a, 01326, Dresden, Germany
| | - Isabelle Vogt
- Institute for Breeding Research on Fruit Crops, Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Pillnitzer Platz 3a, 01326, Dresden, Germany
| | | | - Andreas Dahl
- DRESDEN-Concept Genome Center, Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Fetscherstr. 105, 01307, Dresden, Germany
| | - Klaus Richter
- Institute for Resistance Research and Stress Tolerance, Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Erwin-Baur-Strasse 27, 06484, Quedlinburg, Germany
| | - Magda-Viola Hanke
- Institute for Breeding Research on Fruit Crops, Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Pillnitzer Platz 3a, 01326, Dresden, Germany
| | - Henryk Flachowsky
- Institute for Breeding Research on Fruit Crops, Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Pillnitzer Platz 3a, 01326, Dresden, Germany
| | - Andreas Peil
- Institute for Breeding Research on Fruit Crops, Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Pillnitzer Platz 3a, 01326, Dresden, Germany.
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15
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Chow LKM, Ghaly TM, Gillings MR. A survey of sub-inhibitory concentrations of antibiotics in the environment. J Environ Sci (China) 2021; 99:21-27. [PMID: 33183698 DOI: 10.1016/j.jes.2020.05.030] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 05/31/2020] [Accepted: 05/31/2020] [Indexed: 05/05/2023]
Abstract
Antibiotics are poorly metabolized, and can enter the environment via human waste streams, agricultural run-off and pharmaceutical effluent. We consequently expect to see a concentration gradient of antibiotic compounds radiating from areas of human population. Such antibiotics should be thought of as pollutants, as they can accumulate, and have biological effects. These antibiotic pollutants can increase rates of mutation and lateral transfer events, and continue to exert selection pressure even at sub-inhibitory concentrations. Here, we conducted a literature survey on environmental concentrations of antibiotics. We collated 887 data points from 40 peer-reviewed papers. We then determined whether these concentrations were biologically relevant by comparing them to their minimum selective concentrations, usually defined as between 1/4 and 1/230 of the minimum inhibitory concentration. Environmental concentrations of antibiotics surveyed often fall into this range. In general, the antibiotic concentrations recorded in aquatic and sediment samples were similar. These findings indicate that environmental concentrations of antibiotics are likely to be influencing microbial ecology, and to be driving the selection of antibiotic resistant bacteria.
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Affiliation(s)
- Louise K M Chow
- Department of Biological Sciences, Macquarie University, NSW 2109, Australia.
| | - Timothy M Ghaly
- Department of Biological Sciences, Macquarie University, NSW 2109, Australia
| | - Michael R Gillings
- Department of Biological Sciences, Macquarie University, NSW 2109, Australia; ARC Centre of Excellence in Synthetic Biology, Macquarie University, NSW 2109, Australia
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16
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Emeriewen OF, Richter K, Flachowsky H, Malnoy M, Peil A. Genetic Analysis and Fine Mapping of the Fire Blight Resistance Locus of Malus ×arnoldiana on Linkage Group 12 Reveal First Candidate Genes. FRONTIERS IN PLANT SCIENCE 2021; 12:667133. [PMID: 33959143 PMCID: PMC8093435 DOI: 10.3389/fpls.2021.667133] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 03/24/2021] [Indexed: 05/03/2023]
Abstract
Malus ×arnoldiana accession MAL0004 has been found to be resistant to moderately and highly virulent strains of the fire blight causal pathogen - the Gram-negative bacterium, Erwinia amylovora. Genetic analyses with an F1 segregating population derived from crossing the highly susceptible apple cultivar 'Idared' and MAL0004 led to the detection and mapping of the fire blight resistance locus of M. ×arnoldiana to linkage group (LG)12 (FB_Mar12). FB_Mar12 mapped at the distal end of LG12 below the apple SSR Hi07f01 in an interval of approximately 6 cM (Centimorgan), where both the fire blight resistance loci of M. floribunda 821 and 'Evereste' were located. We fine mapped the region containing FB_Mar12 using 892 progenies. Mining of the region of interest (ROI) on the 'Golden Delicious' doubled haploid genome (GDDH13) identified the presence of 2.3 Mb (megabases) in the homologous region. Of 40 primer pairs designed within this region, 20 were polymorphic and nine were mapped, leading to the identification of 24 significant recombinant individuals whose phenotypes were informative in determining the precise position of the locus within a 0.57 cM interval. Analyses of tightly linked marker sequences on the M. baccata draft genome revealed scaffolds of interest putatively harboring the resistance loci of M. ×arnoldiana, a hybrid between M. baccata and M. floribunda. Open reading frame (ORF) analyses led to the prediction of first fire blight resistance candidate genes with serine/threonine kinase and leucine-rich repeat domains, including homologs of previously identified 'Evereste' candidate genes. We discuss the implications of these results on breeding for resistance to fire blight.
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Affiliation(s)
- Ofere Francis Emeriewen
- Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Breeding Research on Fruit Crops, Dresden, Germany
- Ofere Francis Emeriewen,
| | - Klaus Richter
- Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Resistance Research and Stress Tolerance, Quedlinburg, Germany
| | - Henryk Flachowsky
- Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Breeding Research on Fruit Crops, Dresden, Germany
| | - Mickael Malnoy
- Research and Innovation Centre, Fondazione Edmund Mach (FEM), San Michele all’Adige, Italy
| | - Andreas Peil
- Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Breeding Research on Fruit Crops, Dresden, Germany
- *Correspondence: Andreas Peil,
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17
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O'Connor LMJ, Fugère V, Gonzalez A. Evolutionary Rescue Is Mediated by the History of Selection and Dispersal in Diversifying Metacommunities. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.517434] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Rapid evolution can sometimes prevent population extirpation in stressful environments, but the conditions leading to “evolutionary rescue” in metacommunities are unclear. Here we studied the eco-evolutionary response of microbial metacommunities adapting to selection by the antibiotic streptomycin. Our experiment tested how the history of antibiotic selection and contrasting modes of dispersal influenced diversification and subsequent evolutionary rescue in microbial metacommunities undergoing adaptive radiation. We first tracked the change in diversity and density of Pseudomonas fluorescens morphotypes selected on a gradient of antibiotic stress. We then examined the recovery of these metacommunities following abrupt application of a high concentration of streptomycin lethal to the ancestral organisms. We show that dispersal increases diversity within the stressed metacommunities, that exposure to stress alters diversification dynamics, and that community composition, dispersal, and past exposure to stress mediate the speed at which evolutionary rescue occurs, but not the final outcome of recovery in abundance and diversity. These findings extend recent experiments on evolutionary rescue to the case of metacommunities undergoing adaptive diversification, and should motivate new theory on this question. Our findings are also relevant to evolutionary conservation biology and research on antimicrobial resistance.
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18
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Zurn JD, Norelli JL, Montanari S, Bell R, Bassil NV. Dissecting Genetic Resistance to Fire Blight in Three Pear Populations. PHYTOPATHOLOGY 2020; 110:1305-1311. [PMID: 32175827 DOI: 10.1094/phyto-02-20-0051-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Fire blight, caused by the bacterial pathogen Erwinia amylovora, is a persistent problem for pear (Pyrus spp.) growers in the United States. Growing resistant cultivars is one of the best options for managing fire blight. The cultivars Potomac and Old Home and the selection NJA2R59T69 display resistance to fire blight. As such, three mapping populations (El Dorado × Potomac, Old Home × Bartlett, and NJA2R59T69 × Bartlett) were developed to identify genomic regions associated with resistance to fire blight. Progeny were phenotyped during 2017 and 2018 by inoculating multiple actively growing shoots of field-grown seedling trees with E. amylovora isolate E153n via the cut-leaf method. Genotyping was conducted using the recently developed Axiom Pear 70 K Genotyping Array and chromosomal linkage groups were created for each population. An integrated two-way pseudo-testcross approach was used to map quantitative trait loci (QTLs). Resistance QTLs were identified on chromosome 2 for each population. The QTLs identified in the El Dorado × Potomac and Old Home × Bartlett populations are in the same region as QTLs that were previously identified in Harrow Sweet and Moonglow. The QTL in NJA2R59T69 mapped proximally to the previously identified QTLs and originated from an unknown Asian or occidental source. Future research will focus on further characterizing the resistance regions and developing tools for DNA-informed breeding.
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Affiliation(s)
- Jason D Zurn
- United States Department of Agriculture-Agricultural Research Service (USDA-ARS) National Clonal Germplasm Repository, Corvallis, OR, U.S.A
| | - John L Norelli
- USDA-ARS Appalachian Fruit Research Laboratory, Kearneysville, WV, U.S.A
| | - Sara Montanari
- Department of Plant Sciences, University of California Davis, Davis, CA, U.S.A
| | - Richard Bell
- USDA-ARS Appalachian Fruit Research Laboratory, Kearneysville, WV, U.S.A
| | - Nahla V Bassil
- United States Department of Agriculture-Agricultural Research Service (USDA-ARS) National Clonal Germplasm Repository, Corvallis, OR, U.S.A
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19
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Roossinck MJ. Viruses in the phytobiome. Curr Opin Virol 2019; 37:72-76. [PMID: 31310864 DOI: 10.1016/j.coviro.2019.06.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 11/18/2022]
Abstract
The phytobiome, defined as plants and all the entities that interact with them, is rich in viruses, but with the exception of plant viruses of crop plants, most of the phytobiome viruses remain very understudied. This review focuses on the neglected portions of the phytobiome, including viruses of other microbes interacting with plants, viruses in the soil, viruses of wild plants, and relationships between viruses and the vectors of plant viruses.
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Affiliation(s)
- Marilyn J Roossinck
- Center for Infectious Disease Dynamics, Department of Plant Pathology and Environmental Microbiology, Pennsylvania State University, USA.
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20
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Svircev A, Roach D, Castle A. Framing the Future with Bacteriophages in Agriculture. Viruses 2018; 10:E218. [PMID: 29693561 PMCID: PMC5977211 DOI: 10.3390/v10050218] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/20/2018] [Accepted: 04/22/2018] [Indexed: 12/11/2022] Open
Abstract
The ability of agriculture to continually provide food to a growing world population is of crucial importance. Bacterial diseases of plants and animals have continually reduced production since the advent of crop cultivation and animal husbandry practices. Antibiotics have been used extensively to mitigate these losses. The rise of antimicrobial resistant (AMR) bacteria, however, together with consumers’ calls for antibiotic-free products, presents problems that threaten sustainable agriculture. Bacteriophages (phages) are proposed as bacterial population control alternatives to antibiotics. Their unique properties make them highly promising but challenging antimicrobials. The use of phages in agriculture also presents a number of unique challenges. This mini-review summarizes recent development and perspectives of phages used as antimicrobial agents in plant and animal agriculture at the farm level. The main pathogens and their adjoining phage therapies are discussed.
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Affiliation(s)
- Antonet Svircev
- Agriculture and Agri-Food Canada, Vineland Station, ON L0R 2E0, Canada.
| | - Dwayne Roach
- Department of Microbiology, Pasteur Institute, 75015 Paris, France.
| | - Alan Castle
- Department of Biological Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada.
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21
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Hudson JA, Frewer LJ, Jones G, Brereton PA, Whittingham MJ, Stewart G. The agri-food chain and antimicrobial resistance: A review. Trends Food Sci Technol 2017. [DOI: 10.1016/j.tifs.2017.09.007] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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D'Angeli MA, Baker JB, Call DR, Davis MA, Kauber KJ, Malhotra U, Matsuura GT, Moore DA, Porter C, Pottinger P, Stockwell V, Wagner C, Wohrle R, Yoder J, Yoke LH, Rabinowitz P. Antimicrobial stewardship through a one health lens. INTERNATIONAL JOURNAL OF HEALTH GOVERNANCE 2016. [DOI: 10.1108/ijhg-02-2016-0009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Purpose
– Antibiotic resistance (AR) is a global health crisis that is attracting focussed attention from healthcare, public health, governmental agencies, the public, and food producers. The purpose of this paper is to describe the work in Washington State to combat resistance and promote antimicrobial stewardship from a one health perspective.
Design/methodology/approach
– In 2014, the Washington State Department of Health convened a One Health Steering Committee and two workgroups to focus on AR, the One Health Antimicrobial Stewardship work group and the One Health Antimicrobial Resistance Surveillance work group. The group organized educational sessions to establish a basic understanding of epidemiological factors that contribute to resistance, including antibiotic use, transmission of resistant bacteria, and environmental contamination with resistant bacteria and antibiotic residues.
Findings
– The authors describe the varied uses of antibiotics; efforts to promote stewardship in human, and animal health, including examples from the USA and Europe; economic factors that promote use of antibiotics in animal agriculture; and efforts, products and next steps of the workgroups.
Originality/value
– In Washington, human, animal and environmental health experts are working collaboratively to address resistance from a one health perspective. The authors are establishing a multi-species resistance database that will allow tracking resistance trends in the region. Gaps include measurement of antibiotic use in humans and animals; integrated resistance surveillance information; and funding for AR and animal health research.
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23
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Aitken SL, Dilworth TJ, Heil EL, Nailor MD. Agricultural Applications for Antimicrobials. A Danger to Human Health: An Official Position Statement of the Society of Infectious Diseases Pharmacists. Pharmacotherapy 2016; 36:422-32. [PMID: 26954889 DOI: 10.1002/phar.1737] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The use of antibiotics in agriculture, particularly in food-producing animals, is pervasive and represents the overwhelming majority of antibiotic use worldwide. The link between antibiotic use in animals and antibiotic resistance in humans is unequivocal. Transmission can occur by ingesting undercooked meats harboring resistant bacteria, by direct contact of animals by animal handlers, and by various other means. Antibiotics used in aquaculture and antifungals used in horticulture are also an evolving threat to human health. Regulations aimed at decreasing the amount of antibiotics used in food production to limit the development of antibiotic resistance have recently been implemented. However, further action is needed to minimize antibiotic use in agriculture. This article describes the extent of this current problem and serves as the official position of the Society of Infectious Diseases Pharmacists on this urgent threat to human health.
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Affiliation(s)
- Samuel L Aitken
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Thomas J Dilworth
- Department of Pharmacy, Wheaton Franciscan Healthcare - St. Francis, Milwaukee, Wisconsin
| | - Emily L Heil
- Department of Pharmacy, University of Maryland Medical Center, Baltimore, Maryland
| | - Michael D Nailor
- Department of Pharmacy Services, Hartford Hospital, Hartford, Connecticut.,Department of Pharmacy Practice, University of Connecticut, Storrs, Connecticut
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24
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Williams-Nguyen J, Sallach JB, Bartelt-Hunt S, Boxall AB, Durso LM, McLain JE, Singer RS, Snow DD, Zilles JL. Antibiotics and Antibiotic Resistance in Agroecosystems: State of the Science. JOURNAL OF ENVIRONMENTAL QUALITY 2016; 45:394-406. [PMID: 27065386 DOI: 10.2134/jeq2015.07.0336] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We propose a simple causal model depicting relationships involved in dissemination of antibiotics and antibiotic resistance in agroecosystems and potential effects on human health, functioning of natural ecosystems, and agricultural productivity. Available evidence for each causal link is briefly summarized, and key knowledge gaps are highlighted. A lack of quantitative estimates of human exposure to environmental bacteria, in general, and antibiotic-resistant bacteria, specifically, is a significant data gap hindering the assessment of effects on human health. The contribution of horizontal gene transfer to resistance in the environment and conditions that might foster the horizontal transfer of antibiotic resistance genes into human pathogens also need further research. Existing research has focused heavily on human health effects, with relatively little known about the effects of antibiotics and antibiotic resistance on natural and agricultural ecosystems. The proposed causal model is used to elucidate gaps in knowledge that must be addressed by the research community and may provide a useful starting point for the design and analysis of future research efforts.
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25
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Born Y, Remus-Emsermann MNP, Bieri M, Kamber T, Piel J, Pelludat C. Fe2+ chelator proferrorosamine A: a gene cluster of Erwinia rhapontici P45 involved in its synthesis and its impact on growth of Erwinia amylovora CFBP1430. MICROBIOLOGY-SGM 2016; 162:236-245. [PMID: 26732708 DOI: 10.1099/mic.0.000231] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Proferrorosamine A (proFRA) is an iron (Fe2+) chelator produced by the opportunistic plant pathogen Erwinia rhapontici P45. To identify genes involved in proFRA synthesis, transposon mutagenesis was performed. The identified 9.3 kb gene cluster, comprising seven genes, designated rosA-rosG, encodes proteins that are involved in proFRA synthesis. Based on gene homologies, a biosynthetic pathway model for proFRA is proposed. To obtain a better understanding of the effect of proFRA on non-proFRA producing bacteria, E. rhapontici P45 was co-cultured with Erwinia amylovora CFBP1430, a fire-blight-causing plant pathogen. E. rhapontici P45, but not corresponding proFRA-negative mutants, led to a pink coloration of E. amylovora CFBP1430 colonies on King's B agar, indicating accumulation of the proFRA-iron complex ferrorosamine, and growth inhibition in vitro. By saturating proFRA-containing extracts with Fe2+, the inhibitory effect was neutralized, suggesting that the iron-chelating capability of proFRA is responsible for the growth inhibition of E. amylovora CFBP1430.
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Affiliation(s)
- Yannick Born
- Institute of Food and Beverage Innovation, Zurich University of Applied Sciences, 8820 Wädenswil, Switzerland.,Institute for Plant Production Sciences, Agroscope, Schloss 1, 8820 Wädenswil, Switzerland
| | | | - Marco Bieri
- Institute for Plant Production Sciences, Agroscope, Schloss 1, 8820 Wädenswil, Switzerland
| | - Tim Kamber
- Institute for Plant Production Sciences, Agroscope, Schloss 1, 8820 Wädenswil, Switzerland.,Department of Agronomy, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany
| | - Jörn Piel
- ETH Zürich, Institute of Microbiology, Vladimir-Prelog-Weg 4, 8093 Zurich, Switzerland
| | - Cosima Pelludat
- Institute for Plant Production Sciences, Agroscope, Schloss 1, 8820 Wädenswil, Switzerland
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Wang X, Ryu D, Houtkooper RH, Auwerx J. Antibiotic use and abuse: a threat to mitochondria and chloroplasts with impact on research, health, and environment. Bioessays 2015; 37:1045-53. [PMID: 26347282 PMCID: PMC4698130 DOI: 10.1002/bies.201500071] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Recently, several studies have demonstrated that tetracyclines, the antibiotics most intensively used in livestock and that are also widely applied in biomedical research, interrupt mitochondrial proteostasis and physiology in animals ranging from round worms, fruit flies, and mice to human cell lines. Importantly, plant chloroplasts, like their mitochondria, are also under certain conditions vulnerable to these and other antibiotics that are leached into our environment. Together these endosymbiotic organelles are not only essential for cellular and organismal homeostasis stricto sensu, but also have an important role to play in the sustainability of our ecosystem as they maintain the delicate balance between autotrophs and heterotrophs, which fix and utilize energy, respectively. Therefore, stricter policies on antibiotic usage are absolutely required as their use in research confounds experimental outcomes, and their uncontrolled applications in medicine and agriculture pose a significant threat to a balanced ecosystem and the well-being of these endosymbionts that are essential to sustain health.
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Affiliation(s)
- Xu Wang
- Laboratory of Integrative and Systems PhysiologyÉcole Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Dongryeol Ryu
- Laboratory of Integrative and Systems PhysiologyÉcole Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Riekelt H. Houtkooper
- Laboratory Genetic Metabolic DiseasesAcademic Medical CenterAmsterdamThe Netherlands
| | - Johan Auwerx
- Laboratory of Integrative and Systems PhysiologyÉcole Polytechnique Fédérale de LausanneLausanneSwitzerland
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Aćimović SG, Zeng Q, McGhee GC, Sundin GW, Wise JC. Control of fire blight (Erwinia amylovora) on apple trees with trunk-injected plant resistance inducers and antibiotics and assessment of induction of pathogenesis-related protein genes. FRONTIERS IN PLANT SCIENCE 2015; 6:16. [PMID: 25717330 PMCID: PMC4323746 DOI: 10.3389/fpls.2015.00016] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 01/08/2015] [Indexed: 05/22/2023]
Abstract
Management of fire blight is complicated by limitations on use of antibiotics in agriculture, antibiotic resistance development, and limited efficacy of alternative control agents. Even though successful in control, preventive antibiotic sprays also affect non-target bacteria, aiding the selection for resistance which could ultimately be transferred to the pathogen Erwinia amylovora. Trunk injection is a target-precise pesticide delivery method that utilizes tree xylem to distribute injected compounds. Trunk injection could decrease antibiotic usage in the open environment and increase the effectiveness of compounds in fire blight control. In field experiments, after 1-2 apple tree injections of either streptomycin, potassium phosphites (PH), or acibenzolar-S-methyl (ASM), significant reduction of blossom and shoot blight symptoms was observed compared to water injected control trees. Overall disease suppression with streptomycin was lower than typically observed following spray applications to flowers. Trunk injection of oxytetracycline resulted in excellent control of shoot blight severity, suggesting that injection is a superior delivery method for this antibiotic. Injection of both ASM and PH resulted in the significant induction of PR-1, PR-2, and PR-8 protein genes in apple leaves indicating induction of systemic acquired resistance (SAR) under field conditions. The time separating SAR induction and fire blight symptom suppression indicated that various defensive compounds within the SAR response were synthesized and accumulated in the canopy. ASM and PH suppressed fire blight even after cessation of induced gene expression. With the development of injectable formulations and optimization of doses and injection schedules, the injection of protective compounds could serve as an effective option for fire blight control.
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Affiliation(s)
- Srđan G. Aćimović
- Tree Fruit Pathology Laboratory, Department of Plant, Soil and Microbial Sciences, Michigan State UniversityEast Lansing, MI, USA
- Applied Insecticide Toxicology Laboratory, Department of Entomology, Michigan State UniversityEast Lansing, MI, USA
| | - Quan Zeng
- Tree Fruit Pathology Laboratory, Department of Plant, Soil and Microbial Sciences, Michigan State UniversityEast Lansing, MI, USA
| | - Gayle C. McGhee
- Tree Fruit Pathology Laboratory, Department of Plant, Soil and Microbial Sciences, Michigan State UniversityEast Lansing, MI, USA
| | - George W. Sundin
- Tree Fruit Pathology Laboratory, Department of Plant, Soil and Microbial Sciences, Michigan State UniversityEast Lansing, MI, USA
| | - John C. Wise
- Applied Insecticide Toxicology Laboratory, Department of Entomology, Michigan State UniversityEast Lansing, MI, USA
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Labro MT, Bryskier JM. Antibacterial resistance: an emerging ‘zoonosis’? Expert Rev Anti Infect Ther 2014; 12:1441-61. [DOI: 10.1586/14787210.2014.976611] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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