1
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Jantarit N, Tanaka H, Lin Y, Lee YH, Kurisu G. Crystal structure of pectocin M1 reveals diverse conformations and interactions during its initial step via the ferredoxin uptake system. FEBS Open Bio 2024. [PMID: 39123319 DOI: 10.1002/2211-5463.13874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 07/09/2024] [Accepted: 07/26/2024] [Indexed: 08/12/2024] Open
Abstract
Pectocin M1 (PM1), the bacteriocin from phytopathogenic Pectobacterium carotovorum which causes soft rot disease, has a unique ferredoxin domain that allows it to use FusA of the plant ferredoxin uptake system. To probe the structure-based mechanism of PM1 uptake, we determined the X-ray structure of full-length PM1, containing an N-terminal ferredoxin and C-terminal catalytic domain connected by helical linker, at 2.04 Å resolution. Based on published FusA structure and NMR data for PM1 ferredoxin domain titrated with FusA, we modeled docking of the ferredoxin domain with FusA. Combining the docking models with the X-ray structures of PM1 and FusA enables us to propose the mechanism by which PM1 undergoes dynamic domain rearrangement to translocate across the target cell outer membrane.
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Affiliation(s)
- Nawee Jantarit
- Protein Crystallography Laboratory, Institute for Protein Research, Osaka University, Suita, Japan
- Department of Macromolecular Sciences, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - Hideaki Tanaka
- Protein Crystallography Laboratory, Institute for Protein Research, Osaka University, Suita, Japan
- Department of Macromolecular Sciences, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - Yuxi Lin
- Biopharmaceutical Research Center, Korea Basic Science Institute, Ochang, South Korea
| | - Young-Ho Lee
- Biopharmaceutical Research Center, Korea Basic Science Institute, Ochang, South Korea
- Bio-Analytical Science, University of Science and Technology, Daejeon, South Korea
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, South Korea
- Department of Systems Biotechnology, Chung-Ang University, Gyeonggi, South Korea
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Japan
| | - Genji Kurisu
- Protein Crystallography Laboratory, Institute for Protein Research, Osaka University, Suita, Japan
- Department of Macromolecular Sciences, Graduate School of Science, Osaka University, Toyonaka, Japan
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Japan
- Institute of Science, Suranaree University of Technology, Nakohn Ratchasima, Thailand
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2
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Reuben RC, Torres C. Bacteriocins: potentials and prospects in health and agrifood systems. Arch Microbiol 2024; 206:233. [PMID: 38662051 PMCID: PMC11045635 DOI: 10.1007/s00203-024-03948-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/26/2024]
Abstract
Bacteriocins are highly diverse, abundant, and heterogeneous antimicrobial peptides that are ribosomally synthesized by bacteria and archaea. Since their discovery about a century ago, there has been a growing interest in bacteriocin research and applications. This is mainly due to their high antimicrobial properties, narrow or broad spectrum of activity, specificity, low cytotoxicity, and stability. Though initially used to improve food quality and safety, bacteriocins are now globally exploited for innovative applications in human, animal, and food systems as sustainable alternatives to antibiotics. Bacteriocins have the potential to beneficially modulate microbiota, providing viable microbiome-based solutions for the treatment, management, and non-invasive bio-diagnosis of infectious and non-infectious diseases. The use of bacteriocins holds great promise in the modulation of food microbiomes, antimicrobial food packaging, bio-sanitizers and antibiofilm, pre/post-harvest biocontrol, functional food, growth promotion, and sustainable aquaculture. This can undoubtedly improve food security, safety, and quality globally. This review highlights the current trends in bacteriocin research, especially the increasing research outputs and funding, which we believe may proportionate the soaring global interest in bacteriocins. The use of cutting-edge technologies, such as bioengineering, can further enhance the exploitation of bacteriocins for innovative applications in human, animal, and food systems.
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Affiliation(s)
- Rine Christopher Reuben
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006, Logroño, Spain.
| | - Carmen Torres
- Area of Biochemistry and Molecular Biology, OneHealth-UR Research Group, University of La Rioja, 26006, Logroño, Spain
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3
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Ramos ETDA, Olivares FL, da Rocha LO, da Silva RF, do Carmo MGF, Lopes MTG, Meneses CHSG, Vidal MS, Baldani JI. The Effects of Gluconacin on Bacterial Tomato Pathogens and Protection against Xanthomonas perforans, the Causal Agent of Bacterial Spot Disease. PLANTS (BASEL, SWITZERLAND) 2023; 12:3208. [PMID: 37765372 PMCID: PMC10535834 DOI: 10.3390/plants12183208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/01/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023]
Abstract
As agricultural practices become more sustainable, adopting more sustainable practices will become even more relevant. Searching for alternatives to chemical compounds has been the focus of numerous studies, and bacteriocins are tools with intrinsic biotechnological potential for controlling plant diseases. We continued to explore the biotechnological activity of the bacteriocin Gluconacin from Gluconacetobacter diazotrophicus, PAL5 strain, by investigating this protein's antagonism against important tomato phytopathogens and demonstrating its effectiveness in reducing bacterial spots caused by Xanthomonas perforans. In addition to this pathogen, the bacteriocin Gluconacin demonstrated bactericidal activity in vitro against Ralstonia solanacearum and Pseudomonas syringae pv. tomato, agents that cause bacterial wilt and bacterial spots, respectively. Bacterial spot control tests showed that Gluconacin reduced disease severity by more than 66%, highlighting the biotechnological value of this peptide in ecologically correct formulations.
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Affiliation(s)
- Elizabeth Teixeira de Almeida Ramos
- Programa de Pós-Graduação em Fitotecnia (PPGF), Departamento de Fitotecnia, Instituto de Agronomia, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, km 07, Seropédica 23890-000, RJ, Brazil; (E.T.d.A.R.); (M.G.F.d.C.)
| | - Fábio Lopes Olivares
- Núcleo de Desenvolvimento de Insumos Biológicos para a Agricultura, Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes 28013-602, RJ, Brazil; (F.L.O.); (L.O.d.R.)
| | - Letícia Oliveira da Rocha
- Núcleo de Desenvolvimento de Insumos Biológicos para a Agricultura, Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes 28013-602, RJ, Brazil; (F.L.O.); (L.O.d.R.)
| | - Rogério Freire da Silva
- Programa de Pós-Graduação em Ciências Agrárias, Centro de Ciências Biológicas e da Saúde, Departamento de Biologia, Universidade Estadual da Paraíba, Universitário, Campina Grande 58429-500, PB, Brazil; (R.F.d.S.); (C.H.S.G.M.)
| | - Margarida Goréte Ferreira do Carmo
- Programa de Pós-Graduação em Fitotecnia (PPGF), Departamento de Fitotecnia, Instituto de Agronomia, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, km 07, Seropédica 23890-000, RJ, Brazil; (E.T.d.A.R.); (M.G.F.d.C.)
| | - Maria Teresa Gomes Lopes
- Faculdade de Ciências Agrárias, Universidade Federal do Amazonas, Avenida Rodrigo Otávio Ramos, 3.000, Bairro Coroado, Manaus 69077-000, AM, Brazil;
| | - Carlos Henrique Salvino Gadelha Meneses
- Programa de Pós-Graduação em Ciências Agrárias, Centro de Ciências Biológicas e da Saúde, Departamento de Biologia, Universidade Estadual da Paraíba, Universitário, Campina Grande 58429-500, PB, Brazil; (R.F.d.S.); (C.H.S.G.M.)
| | - Marcia Soares Vidal
- Embrapa Agrobiologia, Rodovia BR 465, km 07, Seropédica 23891-000, RJ, Brazil;
| | - José Ivo Baldani
- Embrapa Agrobiologia, Rodovia BR 465, km 07, Seropédica 23891-000, RJ, Brazil;
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4
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Jaffar NS, Jawan R, Chong KP. The potential of lactic acid bacteria in mediating the control of plant diseases and plant growth stimulation in crop production - A mini review. FRONTIERS IN PLANT SCIENCE 2023; 13:1047945. [PMID: 36714743 PMCID: PMC9880282 DOI: 10.3389/fpls.2022.1047945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 12/27/2022] [Indexed: 06/18/2023]
Abstract
The microbial diseases cause significant damage in agriculture, resulting in major yield and quality losses. To control microbiological damage and promote plant growth, a number of chemical control agents such as pesticides, herbicides, and insecticides are available. However, the rising prevalence of chemical control agents has led to unintended consequences for agricultural quality, environmental devastation, and human health. Chemical agents are not naturally broken down by microbes and can be found in the soil and environment long after natural decomposition has occurred. As an alternative to chemical agents, biocontrol agents are employed to manage phytopathogens. Interest in lactic acid bacteria (LAB) research as another class of potentially useful bacteria against phytopathogens has increased in recent years. Due to the high level of biosafety, they possess and the processes they employ to stimulate plant growth, LAB is increasingly being recognized as a viable option. This paper will review the available information on the antagonistic and plant-promoting capabilities of LAB and its mechanisms of action as well as its limitation as BCA. This review aimed at underlining the benefits and inputs from LAB as potential alternatives to chemical usage in sustaining crop productivity.
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Affiliation(s)
- Nur Sulastri Jaffar
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Sabah, Malaysia
- Horticulture Research Centre, Malaysian Agricultural Research and Development Institute (MARDI), Selangor, Malaysia
| | - Roslina Jawan
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Sabah, Malaysia
| | - Khim Phin Chong
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Sabah, Malaysia
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5
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Weaver SL, Zhu L, Ravishankar S, Clark M, Baltrus DA. Interspecies killing activity of Pseudomonas syringae tailocins. MICROBIOLOGY (READING, ENGLAND) 2022; 168. [PMID: 36342839 DOI: 10.1099/mic.0.001258] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Tailocins are ribosomally synthesized bacteriocins, encoded by bacterial genomes, but originally derived from bacteriophage tails. As with both bacteriocins and phage, tailocins are largely thought to be species-specific with killing activity often assumed to be directed against closely related strains. Previous investigations into interactions between tailocin host range and sensitivity across phylogenetically diverse isolates of the phytopathogen Pseudomonas syringae have demonstrated that many strains possess intraspecific tailocin activity and that this activity is highly precise and specific against subsets of strains. However, here we demonstrate that at least one strain of P. syringae, USA011R, defies both expectations and current overarching dogma because tailocins from this strain possess broad killing activity against other agriculturally significant phytopathogens such as Erwinia amylovora and Xanthomonas perforans as well as against the clinical human pathogen Salmonella enterica serovar Choleraesuis. Moreover, we show that the full spectrum of this interspecific killing activity is not conserved across closely related strains with data suggesting that even if tailocins can target different species, they do so with different efficiencies. Our results reported herein highlight the potential for and phenotypic divergence of interspecific killing activity of P. syringae tailocins and establish a platform for further investigations into the evolution of tailocin host range and strain specificity.
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Affiliation(s)
- Savannah L Weaver
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ, USA.,School of Plant Sciences, University of Arizona, Tucson AZ, USA
| | - Libin Zhu
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson AZ, USA
| | - Sadhana Ravishankar
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson AZ, USA
| | - Meara Clark
- School of Plant Sciences, University of Arizona, Tucson AZ, USA
| | - David A Baltrus
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ, USA.,School of Plant Sciences, University of Arizona, Tucson AZ, USA.,School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson AZ, USA
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6
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Petkova M, Gotcheva V, Dimova M, Bartkiene E, Rocha JM, Angelov A. Screening of Lactiplantibacillus plantarum Strains from Sourdoughs for Biosuppression of Pseudomonas syringae pv. syringae and Botrytis cinerea in Table Grapes. Microorganisms 2022; 10:2094. [PMID: 36363685 PMCID: PMC9696664 DOI: 10.3390/microorganisms10112094] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 09/06/2023] Open
Abstract
Grapes (Vitis vinifera L.) are an essential crop for fresh consumption and wine production. Vineyards are attacked by several economically important bacterial and fungal diseases that require regular pesticide treatment. Among them, Pseudomonas syringae pv. syringae (Ps. syringae) and Botrytis cinerea (B. cinerea) infections cause huge economic losses. The fresh fruit market has shifted to functional natural foodstuffs with clear health benefits and a reduced use of chemicals along the production chain. Lactic acid bacteria (LAB) have a biopreservative effect and are applied to ensure food safety in response to consumers' demands. In the present study, the possibilities of using microorganisms with a potential antimicrobial effect against Ps. syringae and B. cinerea in the production of table grapes were investigated. LAB of the genus Lactiplantibacillus can be a natural antagonist of pathogenic bacteria and fungi by releasing lactic acid, acetic acid, ethanol, carbon dioxide and bacteriocins in the medium. The present study focuses on the characterization of nine Lactiplantibacillus plantarum (Lp. plantarum) strains isolated from spontaneously fermented sourdoughs. Species-specific PCR identified the isolated LAB for partial recA gene amplification with an amplicon size of 318 bp. RAPD-PCR analysis showed the intraspecific diversity of the individual strains. Thirteen plantaricin-like peptides (PlnA, PlnB, PlnC, PlnD, PlnEF, PlnG, PlnI, PlnJ, PlnK, PlnN, PlnNC8, PlnS, and PlnW) produced by isolated Lp. plantarum strains were detected by PCR with gene-specific primers. The key features for future industrial applications were their antimicrobial properties. The culture medium and cell-free supernatant (CFS) were used to establish in vitro antimicrobial activities of Lp. plantarum strains against Ps. syringae and B. cinerea, and inhibition of phytopathogen development was observed. The inhibitory effect of the CFS (cell-free supernatant) of all strains was assessed by infecting table grapes with these pathogens in in vivo experiments. Lp. plantarum Q4 showed the most effective suppression of the pathogens both in vitro and in vivo, which indicates its potential use as a biocontrol agent against berry rot and grey rot on grapes, caused by Ps. syringae and B. cinerea.
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Affiliation(s)
- Mariana Petkova
- Department of Microbiology and Environmental Biotechnology, Agricultural University, 12 Mendeleev Blvd., 4000 Plovdiv, Bulgaria
| | - Velitchka Gotcheva
- Department of Biotechnology, University of Food Technology, 26 Maritza Blvd., 4002 Plovdiv, Bulgaria
| | - Milena Dimova
- Department of Phytopathology, Agricultural University, 12 Mendeleev Blvd., 4000 Plovdiv, Bulgaria
| | - Elena Bartkiene
- Department of Food Safety and Quality, Veterinary Academy, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, Lithuania
- Institute of Animal Rearing Technologies, Faculty of Animal Sciences, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-44307 Kaunas, Lithuania
| | - João Miguel Rocha
- Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, 4050-345 Porto, Portugal
- Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4050-345 Porto, Portugal
| | - Angel Angelov
- Department of Biotechnology, University of Food Technology, 26 Maritza Blvd., 4002 Plovdiv, Bulgaria
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7
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Boro M, Sannyasi S, Chettri D, Verma AK. Microorganisms in biological control strategies to manage microbial plant pathogens: a review. Arch Microbiol 2022; 204:666. [PMID: 36214917 DOI: 10.1007/s00203-022-03279-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/24/2022] [Accepted: 09/30/2022] [Indexed: 01/01/2023]
Abstract
Chemical fertilizers and pesticides are an integral part of modern agriculture and are often associated with numerous environmental problems. Biological agents such as microorganisms can largely replace chemical fertilizers and pesticides. The proper use of selected microorganisms such as bacteria, fungi and viruses have several benefits for agriculture. These include a healthy soil microbiota, biological production of important compounds that promote plant health, and to be used as biocontrol agents (BCAs) that provide protection from plant pathogenic microorganisms. Scientists have found that several bacterial genera including Bacillus and Pseudomonas have antimicrobial activity against numerous pathogenic bacterial and fungal plant pathogens. Trichoderma, Aspergillus, and Penicillium are among the most common fungal genera used as BCAs against both bacterial and fungal plant pathogens. Several bacteriophages and mycoviruses are also found effective as BCAs against selective plant pathogens. Fusarium oxysporum is a commonly found microbial plant pathogen causing wilts and rots in plants. Overall, it can be concluded that the use of microbial BCAs is an effective practice against microbial plant pathogens.
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Affiliation(s)
- Manswama Boro
- Department of Microbiology, Sikkim University, Gangtok, Sikkim, 737102, India
| | - Shuvankar Sannyasi
- Department of Microbiology, Sikkim University, Gangtok, Sikkim, 737102, India
| | - Dixita Chettri
- Department of Microbiology, Sikkim University, Gangtok, Sikkim, 737102, India
| | - Anil Kumar Verma
- Department of Microbiology, Sikkim University, Gangtok, Sikkim, 737102, India.
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8
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Zhao J, Zhou Z, Bai X, Zhang D, Zhang L, Wang J, Wu B, Zhu J, Yang Z. A novel of new class II bacteriocin from Bacillus velezensis HN-Q-8 and its antibacterial activity on Streptomyces scabies. Front Microbiol 2022; 13:943232. [PMID: 35966655 PMCID: PMC9372549 DOI: 10.3389/fmicb.2022.943232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/28/2022] [Indexed: 11/23/2022] Open
Abstract
Potato common scab is a main soil-borne disease of potato that can significantly reduce its quality. At present, it is still a challenge to control potato common scab in the field. To address this problem, the 972 family lactococcin (Lcn972) was screened from Bacillus velezensis HN-Q-8 in this study, and an Escherichia coli overexpression system was used to obtain Lcn972, which showed a significant inhibitory effect on Streptomyces scabies, with a minimum inhibitory concentration of 10.58 μg/mL. The stability test showed that Lcn972 is stable against UV radiation and high temperature. In addition, long-term storage at room temperature and 4°C had limited effects on its activity level. The antibacterial activity of Lcn972 was enhanced by Cu2+ and Ca2+, but decreased by protease K. The protein was completely inactivated by Fe2+. Cell membrane staining showed that Lcn972 damaged the cell membrane integrity of S. scabies. Scanning electron microscope (SEM) and transmission electron microscope (TEM) observations revealed that the hyphae of S. scabies treated with Lcn972 were deformed and adhered, the cell membrane was incomplete, the cytoplasm distribution was uneven, and the cell appeared hollow inside, which led to the death of S. scabies. In conclusion, we used bacteriocin for controlling potato common scab for the first time in this study, and it provides theoretical support for the further application of bacteriocin in the control of plant diseases.
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Affiliation(s)
- Jing Zhao
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Zhijun Zhou
- Experimental Training Center of Hebei Agricultural University, Baoding, China
| | - Xuefei Bai
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Dai Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Likui Zhang
- College of Environmental Science, Yangzhou University, Yangzhou, China
| | - Jinhui Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Beibei Wu
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Jiehua Zhu
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
- *Correspondence: Jiehua Zhu,
| | - Zhihui Yang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
- Zhihui Yang,
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9
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Application of Lactic Acid Bacteria (LAB) in Sustainable Agriculture: Advantages and Limitations. Int J Mol Sci 2022; 23:ijms23147784. [PMID: 35887142 PMCID: PMC9322495 DOI: 10.3390/ijms23147784] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 02/01/2023] Open
Abstract
Lactic acid bacteria (LAB) are significant groups of probiotic organisms in fermented food and are generally considered safe. LAB regulate soil organic matter and the biochemical cycle, detoxify hazardous chemicals, and enhance plant health. They are found in decomposing plants, traditional fermented milk products, and normal human gastrointestinal and vaginal flora. Exploring LAB identified in unknown niches may lead to isolating unique species. However, their classification is quite complex, and they are adapted to high sugar concentrations and acidic environments. LAB strains are considered promising candidates for sustainable agriculture, and they promote soil health and fertility. Therefore, they have received much attention regarding sustainable agriculture. LAB metabolites promote plant growth and stimulate shoot and root growth. As fertilizers, LAB can promote biodegradation, accelerate the soil organic content, and produce organic acid and bacteriocin metabolites. However, LAB show an antagonistic effect against phytopathogens, inhibiting fungal and bacterial populations in the rhizosphere and phyllosphere. Several studies have proposed the LAB bioremediation efficiency and detoxification of heavy metals and mycotoxins. However, LAB genetic manipulation and metabolic engineered tools provide efficient cell factories tailor-made to produce beneficial industrial and agro-products. This review discusses lactic acid bacteria advantages and limitations in sustainable agricultural development.
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10
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Baltrus DA, Clark M, Hockett KL, Mollico M, Smith C, Weaver S. Prophylactic Application of Tailocins Prevents Infection by Pseudomonas syringae. PHYTOPATHOLOGY 2022; 112:561-566. [PMID: 34320833 DOI: 10.1094/phyto-06-21-0269-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Tailocins are phage-derived bacteriocins that demonstrate great potential as agricultural antimicrobials given their high killing efficiency and their precise strain-specific targeting ability. Our group has categorized and characterized tailocins produced by and tailocin sensitivities of the phytopathogen Pseudomonas syringae, and here we extend these experiments to test whether prophylactic tailocin application can prevent infection of Nicotiana benthamiana by P. syringae pv. syringae B728a. Specifically, we demonstrate that multiple strains can produce tailocins that prevent infection by strain B728a and engineer a deletion mutant to prove that tailocin targeting is responsible for this protective effect. Lastly, we provide evidence that heritable resistance mutations do not explain the minority of cases in which tailocins fail to prevent infection. Our results extend previous reports of prophylactic use of tailocins against phytopathogens, and establish a model system with which to test and optimize tailocin application for prophylactic treatment to prevent phytopathogen infection.
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Affiliation(s)
- David A Baltrus
- School of Plant Sciences, University of Arizona, Tucson, AZ 85721
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ 85721
| | - Meara Clark
- School of Plant Sciences, University of Arizona, Tucson, AZ 85721
| | - Kevin L Hockett
- Department of Plant Pathology and Environmental Microbiology, Pennsylvania State University, State College, PA 16801
- The Huck Institutes of the Life Sciences, The Pennsylvania State University, State College, PA 16801
| | - Madison Mollico
- School of Plant Sciences, University of Arizona, Tucson, AZ 85721
| | - Caitlin Smith
- School of Plant Sciences, University of Arizona, Tucson, AZ 85721
| | - Savannah Weaver
- School of Plant Sciences, University of Arizona, Tucson, AZ 85721
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11
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González-Pérez CJ, Aispuro-Hernández E, Vargas-Arispuro I, Hernández-Mendoza A, Ayala Zavala JF, Martínez-Téllez MA. Are Bacteriocins a Feasible Solution for Current Diverse Global Problems? Protein Pept Lett 2021; 28:1330-1337. [PMID: 34629038 DOI: 10.2174/0929866528666211008154430] [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: 12/15/2020] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 11/22/2022]
Abstract
The development of effective technologies to cope with persistent and progressive global problems in the areas of human health and sustainable development has become an imperative worldwide challenge. The search for natural alternatives has led to the discovery of bacteriocins, which are potent protein antimicrobial compounds produced by most bacteria. The relevance of these molecules is evidenced by the more than 4,500 papers published in the last decade in Scopus index journals highlighting their versatility and potential to impact various aspects of daily life, including the food industry, medicine, and agriculture. Bacteriocins have demonstrated antibacterial, antifungal, antiviral, and anticancer activity, and they also act as microbiota regulators and plant growth promoters. This mini-review aims to provide insights into the current state and emerging roles of bacteriocins, as well as their potential and limitations as feasible solutions against current diverse global problems.
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Affiliation(s)
- C J González-Pérez
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Carretera Gustavo Enrique Astiazarán Rosas #46, 83304, Hermosillo, Sonora. Mexico
| | - E Aispuro-Hernández
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Carretera Gustavo Enrique Astiazarán Rosas #46, 83304, Hermosillo, Sonora. Mexico
| | | | | | - J F Ayala Zavala
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Carretera Gustavo Enrique Astiazarán Rosas #46, 83304, Hermosillo, Sonora. Mexico
| | - M A Martínez-Téllez
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Carretera Gustavo Enrique Astiazarán Rosas #46, 83304, Hermosillo, Sonora. Mexico
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Chai R, Rooney WM, Milner JJ, Walker D. Challenges of using protein antibiotics for pathogen control. PEST MANAGEMENT SCIENCE 2021; 77:3836-3840. [PMID: 33527621 DOI: 10.1002/ps.6312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/18/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
Bacterial phytopathogens represent a significant threat to many economically important crops. Current control measures often inflict harm on the environment and may ultimately impact on human health through the spread of antibiotic resistance. Antimicrobial proteins such as bacteriocins have been suggested as the next generation of disease control agents since they are able to specifically target the pathogen of interest with minimal impact on the wider microbial community and environment. However, substantial gaps in knowledge with regards to the efficacy and application of bacteriocins to combat phytopathogenic bacteria remain. Here we highlight the immediate challenges the community must address to ensure maximum exploitation of antimicrobial proteins in the field. © 2021 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Ray Chai
- College of Medical, Veterinary & Life Sciences, Institute of Infection, Immunity & Inflammation, University of Glasgow, Glasgow, UK
| | - William M Rooney
- College of Medical, Veterinary & Life Sciences, Institute of Infection, Immunity & Inflammation, University of Glasgow, Glasgow, UK
- Plant Science Group, College of Molecular, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
| | - Joel J Milner
- Plant Science Group, College of Molecular, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
| | - Daniel Walker
- College of Medical, Veterinary & Life Sciences, Institute of Infection, Immunity & Inflammation, University of Glasgow, Glasgow, UK
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13
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Mohanty P, Singh PK, Chakraborty D, Mishra S, Pattnaik R. Insight Into the Role of PGPR in Sustainable Agriculture and Environment. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2021. [DOI: 10.3389/fsufs.2021.667150] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
A multitude of roles is played by microbes in food and agriculture that include nutrient cycling and management, organic matter decomposition and fermentation. Plant growth promoting rhizobacteria (PGPR), representing microbial groups and with ability of colonizing plant roots, influence plant growth through various indirect and direct modes in order to promote its growth and/or protect it from diseases or damage due to insect attack. Thus, PGPR research has received renewed interest worldwide. Increasing number of crop-specific PGPR are being commercialized these days. Approaches like seed-inoculation and soil application either alone or in combination with bacterial culture/product for increased nutrient availability through phosphate solubilisation, potassium solubilisation, sulfur oxidation, nitrogen fixation, iron, and copper chelation are gaining popularity. Arbuscular mycorrhizal fungi (AMF) are root fungal symbiont that improve management of abiotic stress such as phosphorus deficiency. PGPR involves roles like production of indole acetic acid (IAA), ammonia (NH3), hydrogen cyanide (HCN), catalase, etc. PGPR also improve nutrient uptake by altering the level of plant hormone that enhances root surface area by increasing its girth and shape, thereby helping in absorbing more nutrients. PGPR facilitate seed germination, seedling growth and crop yield. An array of microbes including Pseudomonas, Azospirillum, Azotobacter, Klebsiella, Enterobacter, Alcaligenes, Arthrobacter, Burkholderia, Bacillus, and Serratia enhance plant growth. Various Pseudomonas sp. have demonstrated significant increase in germination, seedling growth and yield in different agricultural crops, including wheat. Hence, developing a successful crop-specific PGPR formulation, the candidate should possess characteristics like high rhizosphere competence, extensive competitive saprophytic ability, growth enhancing ability, ease of mass production, broad-spectrum action, safety toward the environment and compatibility with other partnering organisms.
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14
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CESA-LUNA CATHERINE, ALATORRE-CRUZ JULIAMARÍA, CARREÑO-LÓPEZ RICARDO, QUINTERO-HERNÁNDEZ VERÓNICA, BAEZ ANTONINO. Emerging Applications of Bacteriocins as Antimicrobials, Anticancer Drugs, and Modulators of The Gastrointestinal Microbiota. Pol J Microbiol 2021; 70:143-159. [PMID: 34349808 PMCID: PMC8326989 DOI: 10.33073/pjm-2021-020] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 04/06/2021] [Accepted: 04/25/2021] [Indexed: 02/06/2023] Open
Abstract
The use of bacteriocins holds great promise in different areas such as health, food, nutrition, veterinary, nanotechnology, among others. Many research groups worldwide continue to advance the knowledge to unravel a novel range of therapeutic agents and food preservatives. This review addresses the advances of bacteriocins and their producer organisms as biocontrol agents for applications in the medical industry and agriculture. Furthermore, the bacteriocin mechanism of action and structural characteristics will be reviewed. Finally, the potential role of bacteriocins to modulate the signaling in host-associated microbial communities will be discussed.
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Affiliation(s)
- CATHERINE CESA-LUNA
- Centro de Investigaciones en Ciencias Microbiológicas (CICM), Instituto de Ciencias (IC), Benemérita Universidad Autónoma de Puebla (BUAP), Puebla, México
| | | | - RICARDO CARREÑO-LÓPEZ
- Centro de Investigaciones en Ciencias Microbiológicas (CICM), Instituto de Ciencias (IC), Benemérita Universidad Autónoma de Puebla (BUAP), Puebla, México
| | | | - ANTONINO BAEZ
- Centro de Investigaciones en Ciencias Microbiológicas (CICM), Instituto de Ciencias (IC), Benemérita Universidad Autónoma de Puebla (BUAP), Puebla, México
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15
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Mirzaee H, Neira Peralta NL, Carvalhais LC, Dennis PG, Schenk PM. Plant-produced bacteriocins inhibit plant pathogens and confer disease resistance in tomato. N Biotechnol 2021; 63:54-61. [PMID: 33766789 DOI: 10.1016/j.nbt.2021.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 03/17/2021] [Accepted: 03/21/2021] [Indexed: 01/31/2023]
Abstract
Bacteriocins are a diverse group of bacterial antimicrobial peptides (AMPs) that represent potential replacements for current antibiotics due to their novel modes of action. At present, production costs are a key constraint to the use of bacteriocins and other AMPs. Here, we report the production of bacteriocins in planta - a potentially scalable and cost-effective approach for AMP production. Nine bacteriocin genes with three different modes of action and minimal or no post-translational modifications were synthesized, cloned and used to transform Arabidopsis thaliana. To confirm bacteriocin functionality and the potential to use these plants as biofactories, Arabidopsis T3 crude leaf extracts were subjected to inhibition assays against the bacterial pathogens Clavibacter michiganensis subsp. michiganensis (Cmm) and Pseudomonas syringae pv. tomato DC3000 (Pst). Six and seven of nine extracts significantly inhibited Cmm and Pst, respectively. Three bacteriocin genes (plantaricin, enteriocin, and leucocin) were then selected for over-expression in tomato (Solanum lycopersicum). In vitro plant pathogen inhibition assays of T0, T1 and T2 transgenic tomato leaf extracts confirmed antimicrobial activity against both pathogens for all three generations of plants, indicating their potential use as stable biopesticide biofactories. Plantaricin and leucocin-expressing T2 tomato plants were resistant to Cmm, and leucocin-expressing T2 plants were resistant to Pst. This study highlights that plants can be used as biofactories for AMP production and that the expression of bacteriocins in planta may offer new opportunities for disease control in agriculture.
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Affiliation(s)
- Hooman Mirzaee
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Australia
| | - Noelia L Neira Peralta
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Australia
| | - Lilia C Carvalhais
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Australia; Queensland Alliance for Agriculture and Food Innovation, Centre for Horticultural Science, Ecosciences Precinct, The University of Queensland, Brisbane, Australia
| | - Paul G Dennis
- School of Earth and Environmental Sciences, The University of Queensland, Brisbane, Australia
| | - Peer M Schenk
- Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Australia.
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Bacterial Plant Biostimulants: A Sustainable Way towards Improving Growth, Productivity, and Health of Crops. SUSTAINABILITY 2021. [DOI: 10.3390/su13052856] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This review presents a comprehensive and systematic study of the field of bacterial plant biostimulants and considers the fundamental and innovative principles underlying this technology. Plant biostimulants are an important tool for modern agriculture as part of an integrated crop management (ICM) system, helping make agriculture more sustainable and resilient. Plant biostimulants contain substance(s) and/or microorganisms whose function when applied to plants or the rhizosphere is to stimulate natural processes to enhance plant nutrient uptake, nutrient use efficiency, tolerance to abiotic stress, biocontrol, and crop quality. The use of plant biostimulants has gained substantial and significant heed worldwide as an environmentally friendly alternative to sustainable agricultural production. At present, there is an increasing curiosity in industry and researchers about microbial biostimulants, especially bacterial plant biostimulants (BPBs), to improve crop growth and productivity. The BPBs that are based on PGPR (plant growth-promoting rhizobacteria) play plausible roles to promote/stimulate crop plant growth through several mechanisms that include (i) nutrient acquisition by nitrogen (N2) fixation and solubilization of insoluble minerals (P, K, Zn), organic acids and siderophores; (ii) antimicrobial metabolites and various lytic enzymes; (iii) the action of growth regulators and stress-responsive/induced phytohormones; (iv) ameliorating abiotic stress such as drought, high soil salinity, extreme temperatures, oxidative stress, and heavy metals by using different modes of action; and (v) plant defense induction modes. Presented here is a brief review emphasizing the applicability of BPBs as an innovative exertion to fulfill the current food crisis.
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17
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Buscaill P, Sanguankiattichai N, Lee YJ, Kourelis J, Preston G, van der Hoorn RAL. Agromonas: a rapid disease assay for Pseudomonas syringae growth in agroinfiltrated leaves. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 105:831-840. [PMID: 33124734 PMCID: PMC7898395 DOI: 10.1111/tpj.15056] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/05/2020] [Accepted: 10/21/2020] [Indexed: 05/04/2023]
Abstract
The lengthy process to generate transformed plants is a limitation in current research on the interactions of the model plant pathogen Pseudomonas syringae with plant hosts. Here we present an easy method called agromonas, where we quantify P. syringae growth in agroinfiltrated leaves of Nicotiana benthamiana using a cocktail of antibiotics to select P. syringae on plates. As a proof of concept, we demonstrate that transient expression of PAMP receptors reduces bacterial growth, and that transient depletion of a host immune gene and transient expression of a type-III effector increase P. syringae growth in agromonas assays. We show that we can rapidly achieve structure-function analysis of immune components and test the function of immune hydrolases. The agromonas method is easy, fast and robust for routine disease assays with various Pseudomonas strains without transforming plants or bacteria. The agromonas assay offers a reliable approach for further comprehensive analysis of plant immunity.
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Affiliation(s)
- Pierre Buscaill
- Plant Chemetics LabDepartment of Plant SciencesUniversity of OxfordOxfordOX1 3RBUK
| | - Nattapong Sanguankiattichai
- Plant Chemetics LabDepartment of Plant SciencesUniversity of OxfordOxfordOX1 3RBUK
- Department of Plant SciencesUniversity of OxfordOxfordOX1 3RBUK
| | - Yoon Joo Lee
- Plant Chemetics LabDepartment of Plant SciencesUniversity of OxfordOxfordOX1 3RBUK
| | - Jiorgos Kourelis
- Plant Chemetics LabDepartment of Plant SciencesUniversity of OxfordOxfordOX1 3RBUK
| | - Gail Preston
- Department of Plant SciencesUniversity of OxfordOxfordOX1 3RBUK
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18
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Buscaill P, Sanguankiattichai N, Lee YJ, Kourelis J, Preston G, van der Hoorn RAL. Agromonas: a rapid disease assay for Pseudomonas syringae growth in agroinfiltrated leaves. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 105:831-840. [PMID: 33124734 DOI: 10.1101/2020.08.10.243808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/05/2020] [Accepted: 10/21/2020] [Indexed: 05/27/2023]
Abstract
The lengthy process to generate transformed plants is a limitation in current research on the interactions of the model plant pathogen Pseudomonas syringae with plant hosts. Here we present an easy method called agromonas, where we quantify P. syringae growth in agroinfiltrated leaves of Nicotiana benthamiana using a cocktail of antibiotics to select P. syringae on plates. As a proof of concept, we demonstrate that transient expression of PAMP receptors reduces bacterial growth, and that transient depletion of a host immune gene and transient expression of a type-III effector increase P. syringae growth in agromonas assays. We show that we can rapidly achieve structure-function analysis of immune components and test the function of immune hydrolases. The agromonas method is easy, fast and robust for routine disease assays with various Pseudomonas strains without transforming plants or bacteria. The agromonas assay offers a reliable approach for further comprehensive analysis of plant immunity.
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Affiliation(s)
- Pierre Buscaill
- Plant Chemetics Lab, Department of Plant Sciences, University of Oxford, Oxford, OX1 3RB, UK
| | - Nattapong Sanguankiattichai
- Plant Chemetics Lab, Department of Plant Sciences, University of Oxford, Oxford, OX1 3RB, UK
- Department of Plant Sciences, University of Oxford, Oxford, OX1 3RB, UK
| | - Yoon Joo Lee
- Plant Chemetics Lab, Department of Plant Sciences, University of Oxford, Oxford, OX1 3RB, UK
| | - Jiorgos Kourelis
- Plant Chemetics Lab, Department of Plant Sciences, University of Oxford, Oxford, OX1 3RB, UK
| | - Gail Preston
- Department of Plant Sciences, University of Oxford, Oxford, OX1 3RB, UK
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Current Knowledge on Microviridin from Cyanobacteria. Mar Drugs 2021; 19:md19010017. [PMID: 33406599 PMCID: PMC7823629 DOI: 10.3390/md19010017] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 12/18/2022] Open
Abstract
Cyanobacteria are a rich source of secondary metabolites with a vast biotechnological potential. These compounds have intrigued the scientific community due their uniqueness and diversity, which is guaranteed by a rich enzymatic apparatus. The ribosomally synthesized and post-translationally modified peptides (RiPPs) are among the most promising metabolite groups derived from cyanobacteria. They are interested in numerous biological and ecological processes, many of which are entirely unknown. Microviridins are among the most recognized class of ribosomal peptides formed by cyanobacteria. These oligopeptides are potent inhibitors of protease; thus, they can be used for drug development and the control of mosquitoes. They also play a key ecological role in the defense of cyanobacteria against microcrustaceans. The purpose of this review is to systematically identify the key characteristics of microviridins, including its chemical structure and biosynthesis, as well as its biotechnological and ecological significance.
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20
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Jayaraman J, Jones WT, Harvey D, Hemara LM, McCann HC, Yoon M, Warring SL, Fineran PC, Mesarich CH, Templeton MD. Variation at the common polysaccharide antigen locus drives lipopolysaccharide diversity within the Pseudomonas syringae species complex. Environ Microbiol 2020; 22:5356-5372. [PMID: 32985740 PMCID: PMC7820976 DOI: 10.1111/1462-2920.15250] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/22/2020] [Accepted: 09/22/2020] [Indexed: 12/19/2022]
Abstract
The common polysaccharide antigen (CPA) of the lipopolysaccharide (LPS) from Pseudomonas syringae is highly variable, but the genetic basis for this is poorly understood. We have characterized the CPA locus from P. syringae pv. actinidiae (Psa). This locus has genes for l- and d-rhamnose biosynthesis and an operon coding for ABC transporter subunits, a bifunctional glycosyltransferase and an o-methyltransferase. This operon is predicted to have a role in the transport, elongation and termination of the CPA oligosaccharide and is referred to as the TET operon. Two alleles of the TET operon were present in different biovars (BV) of Psa and lineages of the closely related pathovar P. syringae pv. actinidifoliorum. This allelic variation was reflected in the electrophoretic properties of purified LPS from the different isolates. Gene knockout of the TET operon allele from BV1 and replacement with that from BV3, demonstrated the link between the genetic locus and the biochemical properties of the LPS molecules in Psa. Sequence analysis of the TET operon from a range of P. syringae and P. viridiflava isolates displayed a phylogenetic history incongruent with core gene phylogeny but correlates with previously reported tailocin sensitivity, suggesting a functional relationship between LPS structure and tailocin susceptibility.
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Affiliation(s)
- Jay Jayaraman
- Bioprotection TechnologiesThe New Zealand Institute for Plant and Food Research LimitedAucklandNew Zealand
- Bioprotection Centre for Research ExcellenceNew Zealand
| | - William T. Jones
- Bioprotection TechnologiesThe New Zealand Institute for Plant and Food Research LimitedPalmerston NorthNew Zealand
| | - Dawn Harvey
- Bioprotection TechnologiesThe New Zealand Institute for Plant and Food Research LimitedPalmerston NorthNew Zealand
| | - Lauren M. Hemara
- Bioprotection TechnologiesThe New Zealand Institute for Plant and Food Research LimitedAucklandNew Zealand
- Bioprotection Centre for Research ExcellenceNew Zealand
- School of Biological SciencesUniversity of AucklandNew Zealand
| | - Honour C. McCann
- Institute of Advanced StudiesMassey UniversityAucklandNew Zealand
| | - Minsoo Yoon
- Bioprotection TechnologiesThe New Zealand Institute for Plant and Food Research LimitedAucklandNew Zealand
| | - Suzanne L. Warring
- Department of Microbiology and ImmunologyUniversity of OtagoDunedinNew Zealand
| | - Peter C. Fineran
- Bioprotection Centre for Research ExcellenceNew Zealand
- Department of Microbiology and ImmunologyUniversity of OtagoDunedinNew Zealand
| | - Carl H. Mesarich
- Bioprotection Centre for Research ExcellenceNew Zealand
- School of Agriculture and EnvironmentMassey UniversityPalmerston NorthNew Zealand
| | - Matthew D. Templeton
- Bioprotection TechnologiesThe New Zealand Institute for Plant and Food Research LimitedAucklandNew Zealand
- Bioprotection Centre for Research ExcellenceNew Zealand
- School of Biological SciencesUniversity of AucklandNew Zealand
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21
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Rooney WM, Chai R, Milner JJ, Walker D. Bacteriocins Targeting Gram-Negative Phytopathogenic Bacteria: Plantibiotics of the Future. Front Microbiol 2020; 11:575981. [PMID: 33042091 PMCID: PMC7530242 DOI: 10.3389/fmicb.2020.575981] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 08/25/2020] [Indexed: 12/12/2022] Open
Abstract
Gram-negative phytopathogenic bacteria are a significant threat to food crops. These microbial invaders are responsible for a plethora of plant diseases and can be responsible for devastating losses in crops such as tomatoes, peppers, potatoes, olives, and rice. Current disease management strategies to mitigate yield losses involve the application of chemicals which are often harmful to both human health and the environment. Bacteriocins are small proteinaceous antibiotics produced by bacteria to kill closely related bacteria and thereby establish dominance within a niche. They potentially represent a safer alternative to chemicals when used in the field. Bacteriocins typically show a high degree of selectivity toward their targets with no off-target effects. This review outlines the current state of research on bacteriocins active against Gram-negative phytopathogenic bacteria. Furthermore, we will examine the feasibility of weaponizing bacteriocins for use as a treatment for bacterial plant diseases.
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Affiliation(s)
- William M. Rooney
- Plant Science Group, School of Life Sciences, Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow, United Kingdom
- College of Medical, Veterinary and Life Sciences, Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Ray Chai
- College of Medical, Veterinary and Life Sciences, Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Joel J. Milner
- Plant Science Group, School of Life Sciences, Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow, United Kingdom
| | - Daniel Walker
- College of Medical, Veterinary and Life Sciences, Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
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