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Demisie S, Oh DC, Wolday D, Rinke de Wit TF, Abera A, Tasew G, Shenkutie AM, Girma S, Tafess K. Diversity of culturable bacterial isolates and their potential as antimicrobial against human pathogens from Afar region, Ethiopia. Microbiol Spectr 2024:e0181024. [PMID: 39365108 DOI: 10.1128/spectrum.01810-24] [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: 07/21/2024] [Accepted: 09/15/2024] [Indexed: 10/05/2024] Open
Abstract
Antimicrobial resistance is a growing global concern exacerbated by the scarcity of new medications and resistance to current antibiotics. Microbes from unexplored habitats are promising sources of natural products to combat this challenge. This study aimed to isolate bacteria producing secondary metabolites and assess their antimicrobial efficacy against human pathogens. Soil and liquid samples were collected from Afar region, Ethiopia. Bacterial isolates were obtained using standard serial dilution techniques. Antimicrobial activity was evaluated using agar plug and well diffusion methods. matrix-assisted laser desorption/ionization time-of-flight-mass spectrometry (MALDI-TOF MS) and whole-genome sequencing (WGS) were conducted for the isolate exhibiting the highest antimicrobial activity. Secondary metabolites were extracted and analyzed using gas chromatography-mass spectra (GC-MS). In this study, 301 bacteria isolates were identified, of which 68 (22.6%) demonstrated antagonistic activity against at least one reference pathogen. Whole-genome sequencing revealed that Sl00103 belongs to the genus Bacillus, designated as Bacillus sp. Sl00103. The extract of Sl00103 showed zones of inhibition ranging between 17.17 ± 0.43 and 26.2 ± 0.4 mm against bacterial pathogens and 19.5 ± 0.44 to 21.0 ± 1.01 mm against Candida albicans. GC-MS analysis of ethyl acetate and n-hexane extracts identified major compounds including (R,R)-butane-2,3-diol; 3-isobutylhexahydropyrrolo[1,2a] pyrazine-1,4-dione; cyclo(L-prolyl-L-valine); and tetradecanoic acid, 12-methyl-, methyl ester; hexadecanoic acid, methyl ester among other. In conclusion, this study isolated several promising bacterial strains from the Afar region in Ethiopia, with strain Sl00103 (Bacillus sp. Sl00103) demonstrating notable antimicrobial and antioxidant activities and warranting further studies. IMPORTANCE Antimicrobial resistance (AMR) is an escalating global health threat affecting humans, animals, and the environment, underscoring the urgent need for alternative pathogen control methods. Natural products, particularly secondary metabolites from bacteria, continue to be a vital source of antibiotics. However, microbial habitats and metabolites in Africa remain largely unexplored. In this study, we isolated and screened bacteria from Ethiopia's Afar region, characterized by extreme conditions like high temperatures, volcanic activity, high salinity, and hot springs to identify potential bioactive compounds. We discovered diverse bacterial isolates with antimicrobial activity against various pathogens, including strain Sl00103 (Bacillus sp. Sl00103), which demonstrated significant antimicrobial and antioxidant activities. GC-MS analysis identified several antimicrobial compounds, highlighting strain Sl00103 as a promising source of secondary metabolites with potential pharmaceutical applications and warranting further investigation.
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Affiliation(s)
- Sisay Demisie
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, Adama, Ethiopia
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Dawit Wolday
- Depatment of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | - Tobias F Rinke de Wit
- Department of Global Health, Amsterdam Institute for Global Health and Development (AIGHD), Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Adugna Abera
- Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Geremew Tasew
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, China
| | - Abebe Mekuria Shenkutie
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, China
| | - Sisay Girma
- College of Veterinary Medicine and Agriculture, Addis Ababa University, Bishoftu, Ethiopia
- Institute for Microbiology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ketema Tafess
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, Adama, Ethiopia
- Institute of Pharmaceutical Sciences, Adama Science and Technology University, Adama, Ethiopia
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Guraka A, Duff R, Waldron J, Tripathi G, Kermanizadeh A. Co-Culture of Gut Bacteria and Metabolite Extraction Using Fast Vacuum Filtration and Centrifugation. Methods Protoc 2024; 7:74. [PMID: 39311375 PMCID: PMC11417889 DOI: 10.3390/mps7050074] [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: 07/30/2024] [Revised: 09/13/2024] [Accepted: 09/16/2024] [Indexed: 09/26/2024] Open
Abstract
This protocol describes a robust method for the extraction of intra and extracellular metabolites of gut bacterial mono and co-cultures. In recent years, the co-culture techniques employed in the field of microbiology have demonstrated significant importance in regard to understanding cell-cell interactions, cross-feeding, and the metabolic interactions between different bacteria, fungi, and microbial consortia which enable the mimicking of complex co-habitant conditions. This protocol highlights a robust reproducible physiologically relevant culture and extraction protocol for the co-culture of gut bacterium. The novel extraction steps are conducted without using quenching and cell disruption through bead-cell methods, freeze-thaw cycles, and sonication, which tend to affect the physical and biochemical properties of intracellular metabolites and secretome. The extraction procedure of inoculated bacterial co-cultures and monocultures use fast vacuum filtration and centrifugation. The extraction methodology is fast, effective, and robust, requiring 4 h to complete.
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Affiliation(s)
- Asha Guraka
- College of Science and Engineering, University of Derby, Derby DE22 1GB, UK
| | - Richard Duff
- College of Science and Engineering, University of Derby, Derby DE22 1GB, UK
| | - Joe Waldron
- College of Science and Engineering, University of Derby, Derby DE22 1GB, UK
| | - Gyanendra Tripathi
- School of Science and Technology, Nottingham Trent University, Nottingham NG1 4BU, UK;
| | - Ali Kermanizadeh
- College of Science and Engineering, University of Derby, Derby DE22 1GB, UK
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Bing H, Qi C, Gu J, Zhao T, Yu X, Cai Y, Zhang Y, Li A, Wang X, Zhao J, Xiang W. Isolation and identification of NEAU-CP5: A seed-endophytic strain of B. velezensis that controls tomato bacterial wilt. Microb Pathog 2024; 192:106707. [PMID: 38777241 DOI: 10.1016/j.micpath.2024.106707] [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: 12/30/2023] [Revised: 04/29/2024] [Accepted: 05/19/2024] [Indexed: 05/25/2024]
Abstract
Bacterial wilt of tomato caused by Ralstonia solanacearum is a critical soilborne disease that drastically reduces yield. In the current study, an endophytic strain NEAU-CP5 with strong antagonistic activity against R. solanacearum was isolated from tomato seeds and characterized. The strain was identified as Bacillus velezensis based on 16S rRNA gene and whole genome sequence analysis. NEAU-CP5 can secrete amylase, protease, and cellulase, and also produce known antibacterial metabolites, including cyclo (leucylprolyl), cyclo (phenylalanyl-prolyl), cyclo (Pro-Gly), 3-benzyl-2,5-piperazinedione, pentadecanoic acid, eicosane, 2-methyoic acid, isovaleric acid, dibuty phthalate, and esters of fatty acids (HFDU), which may be responsible for its strong antibacterial activity. Fourteen gene clusters associated with antibacterial properties were also identified in the whole genome sequence of NEAU-CP5. Pot experiment demonstrated that the application of 108 CFU/mL NEAU-CP5 on tomato plants significantly reduced the incidence of tomato bacterial wilt by 68.36 ± 1.67 %. NEAU-CP5 also increased the activity of defense-related enzymes (CAT, POD, PPO, SOD, and PAL) in tomato plants. This is the first report of an effective control of bacterial wilt on tomato plants by B. velezensis and highlights the potential of NEAU-CP5 as a potential biocontrol agent for the management of tomato bacterial wilt.
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Affiliation(s)
- Hui Bing
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China
| | - Cuiping Qi
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China
| | - Jinzhao Gu
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China
| | - Tianxin Zhao
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China
| | - Xiaoyan Yu
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China
| | - Yang Cai
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China
| | - Yance Zhang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China
| | - Ailin Li
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China
| | - Xiangjing Wang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Junwei Zhao
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China.
| | - Wensheng Xiang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 600 Changjiang Road, Xiangfang District, Harbin, 150030, PR China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China.
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Talla RM, Tamfu AN, Wakeu BNK, Ceylan O, Mbazoa CD, Kapche GDWF, Lenta BN, Sewald N, Wandji J. Evaluation of anti-quorum sensing and antibiofilm effects of secondary metabolites from Gambeya lacourtiana (De Wild) Aubr. & Pellegr against selected pathogens. BMC Complement Med Ther 2023; 23:300. [PMID: 37620848 PMCID: PMC10464238 DOI: 10.1186/s12906-023-04115-4] [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: 02/27/2023] [Accepted: 08/02/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND Microbial infections cause serious health problems especially with the rising antibiotic resistance which accounts for about 700,000 human deaths annually. Antibiotics which target bacterial death encounter microbial resistance with time, hence, there is an urgent need for the search of antimicrobial substances which target disruption of virulence factors such as biofilm and quorum sensing (QS) with selective pressure on the pathogens so as to avoid resistance. METHODS Natural products are suitable leads for antimicrobial drugs that can inhibit bacterial biofilms and QS. Twenty compounds isolated from the medicinal plant Gambeya lacourtiana were evaluated for their antibiofilm and anti-quorum sensing effects against selected pathogenic bacteria. RESULTS Most of the compounds inhibited violacein production in Chromobacterium violaceum CV12472 and the most active compound, Epicatechin had 100% inhibition at MIC (Minimal Inhibitory Concentration) and was the only compound to inhibit violacein production at MIC/8 with percentage inhibition of 17.2 ± 0.9%. Since the bacteria C. violaceum produces violacein while growing, the inhibition of the production of this pigment reflects the inhibition of signal production. Equally, some compounds inhibited violacein production by C. violaceum CV026 in the midst of an externally supplied acylhomoserine lactone, indicating that they disrupted signal molecule reception. Most of the compounds exhibited biofilm inhibition on Staphyloccocus aureus, Escherichia coli and Candida albicans and it was observed that the Gram-positive bacteria biofilm was most susceptible. The triterpenoids bearing carboxylic acid group, the ceramide and epicatechin were the most active compounds compared to others. CONCLUSION Since some of the compounds disrupted QS mediated processes in bacteria, it indicates that this plant is a source of antibiotics drugs that can reduce microbial resistance.
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Affiliation(s)
- Rostan Mangoua Talla
- Department of Organic Chemistry, Faculty of Science, The University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
- Department of Chemistry, Higher Teacher Training C ollege, The University of Yaoundé 1, P.O. Box 47, Yaoundé, Cameroon
| | - Alfred Ngenge Tamfu
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, University of Ngaoundéré, P.O. Box 454, Ngaoundéré, Cameroon.
- Food Quality Control and Analysis Program, Ula Ali Kocman Vocational School, Mugla Sitki Koc-man University, Mugla, 48147, Turkey.
| | - Brussine Nadège Kweka Wakeu
- Department of Organic Chemistry, Faculty of Science, The University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | - Ozgur Ceylan
- Food Quality Control and Analysis Program, Ula Ali Kocman Vocational School, Mugla Sitki Koc-man University, Mugla, 48147, Turkey
| | - Céline Djama Mbazoa
- Department of Organic Chemistry, Faculty of Science, The University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | | | - Bruno Ndjakou Lenta
- Department of Chemistry, Higher Teacher Training C ollege, The University of Yaoundé 1, P.O. Box 47, Yaoundé, Cameroon
| | - Norbert Sewald
- Chemistry Department, Organic and Bioorganic Chemistry, Bielefeld University, P.O. Box 100131, 33501, Bielefeld, Germany
| | - Jean Wandji
- Department of Organic Chemistry, Faculty of Science, The University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
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Zhang Z, Sun Y, Yi Y, Bai X, Zhu L, Zhu J, Gu M, Zhu Y, Jiang L. Screening and Identification of a Streptomyces Strain with Quorum-Sensing Inhibitory Activity and Effect of the Crude Extracts on Virulence Factors of Pseudomonas aeruginosa. Microorganisms 2023; 11:2079. [PMID: 37630639 PMCID: PMC10458028 DOI: 10.3390/microorganisms11082079] [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: 07/07/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Quorum-sensing (QS) is involved in numerous physiological processes in bacteria, such as biofilm formation, sporulation, and virulence formation. Therefore, the search for new quorum-sensing inhibitors (QSI) is a promising strategy that opens up a new perspective for controlling QS-mediated bacterial pathogens. To explore new QSIs, a strain named Streptomyces sp. D67 with QS inhibitory activity was isolated from the soil of the arid zone around the Kumutag Desert in Xinjiang. Phylogenetic analyses demonstrated that strain D67 shared the highest similarity with Streptomyces ardesiacus NBRC 15402T (98.39%), which indicated it represented a potential novel species in the Streptomyces genus. The fermentation crude extracts of strain D67 can effectively reduce the violacein production produced by Chromobacterium violaceum CV026 and the swarming and swimming abilities of Pseudomonas aeruginosa. It also has significant inhibitory activity on the production of virulence factors such as biofilm, pyocyanin, and rhamnolipids of P. aeruginosa in a significant concentration-dependent manner, but not on protease activity. A total of 618 compounds were identified from the fermentation crude extracts of strain D67 by LC-MS, and 19 compounds with significant QS inhibitory activity were observed. Overall, the strain with QS inhibitory activity was screened from Kumutag Desert in Xinjiang for the first time, which provided a basis for further research and development of new QSI.
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Affiliation(s)
- Zhidong Zhang
- Xinjiang Key Laboratory of Special Environmental Microbiology, Institute of Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Z.Z.); (Y.Y.); (J.Z.)
- College of Life Sciences, Xinjiang Normal University, Urumqi 830054, China;
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China;
| | - Yang Sun
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China;
| | - Yuanyang Yi
- Xinjiang Key Laboratory of Special Environmental Microbiology, Institute of Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Z.Z.); (Y.Y.); (J.Z.)
- College of Life Sciences, Xinjiang Normal University, Urumqi 830054, China;
| | - Xiaoyu Bai
- Xinjiang Key Laboratory of Special Environmental Microbiology, Institute of Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Z.Z.); (Y.Y.); (J.Z.)
- College of Life Sciences, Xinjiang Normal University, Urumqi 830054, China;
| | - Liying Zhu
- College of Chemical and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jing Zhu
- Xinjiang Key Laboratory of Special Environmental Microbiology, Institute of Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Z.Z.); (Y.Y.); (J.Z.)
| | - Meiying Gu
- Xinjiang Key Laboratory of Special Environmental Microbiology, Institute of Microbiology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Z.Z.); (Y.Y.); (J.Z.)
| | - Yanlei Zhu
- College of Life Sciences, Xinjiang Normal University, Urumqi 830054, China;
| | - Ling Jiang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China;
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Das T, Das B, Young BC, Aldilla V, Sabir S, Almohaywi B, Willcox M, Manefield M, Kumar N. Ascorbic acid modulates the structure of the Pseudomonas aeruginosa virulence factor pyocyanin and ascorbic acid-furanone-30 combination facilitate biofilm disruption. Front Microbiol 2023; 14:1166607. [PMID: 37520362 PMCID: PMC10381918 DOI: 10.3389/fmicb.2023.1166607] [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: 02/15/2023] [Accepted: 06/26/2023] [Indexed: 08/01/2023] Open
Abstract
The production of pyocyanin by Pseudomonas aeruginosa increases its virulence, fitness and biofilm formation. Pyocyanin is also a redox molecule and we hypothesize that ascorbic acid being an antioxidant will interact with pyocyanin. The main objective of this study was to investigate the potential interaction of ascorbic acid with pyocyanin, and also to investigate the impact of ascorbic acid in combination with Furanone-30 on quorum sensing and biofilm formation of P. aeruginosa. When incubated with ascorbic acid, hyperchromic and hypsochromic shifts in pyocyanin absorbance peaks at 385 nm and 695 nm were observed. In the presence of dehydroascorbic acid and citric acid, these shifts were absent, indicating that the intrinsic antioxidant property of ascorbic acid was probably essential in binding to pyocyanin. NMR spectroscopy showed shifts in 1H NMR pyocyanin peaks between 8.2 to 5.8 ppm when incubated in the presence of ascorbic acid. Density Functional Theory (DFT) supported potential interactions between the -CH2OH or -OH moieties of ascorbic acid with the -C=O moiety of pyocyanin. The pyocyanin-ascorbic acid complex impaired pyocyanin binding to DNA. Ascorbic acid combined with furanone-30 elevated quorum-sensing inhibition in P. aeruginosa, which was directly associated with significantly reduced P. aeruginosa virulence, adhesion, aggregation and biofilm formation and enhanced antibiotic-mediated bacterial killing. This study demonstrated that the antioxidant ascorbic acid directly binds to pyocyanin, modulates its structure and results in disruption of biofilm formation and associated tolerance to antibiotics.
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Affiliation(s)
- Theerthankar Das
- Infection Immunity and Inflammation, Charles Perkins Centre, School of Medical Science, The University of Sydney, Sydney, NSW, Australia
- Sydney Institute for Infectious Diseases, School of Medical Science, The University of Sydney, Sydney, NSW, Australia
| | - Biswanath Das
- Department of Organic Chemistry, Arrhenius Laboratory Stockholm University, Stockholm, Sweden
- School of Chemistry, University of New South Wales (UNSW), Sydney, NSW, Australia
| | - Brandon Clark Young
- Infection Immunity and Inflammation, Charles Perkins Centre, School of Medical Science, The University of Sydney, Sydney, NSW, Australia
| | - Vina Aldilla
- School of Chemistry, University of New South Wales (UNSW), Sydney, NSW, Australia
| | - Shekh Sabir
- School of Chemistry, University of New South Wales (UNSW), Sydney, NSW, Australia
| | - Basmah Almohaywi
- College of Pharmacy, King Khalid University (KKU), Abha, Saudi Arabia
| | - Mark Willcox
- School of Optometry and Vision Science, The University of New South Wales, Sydney, NSW, Australia
| | - Mike Manefield
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, Australia
| | - Naresh Kumar
- School of Chemistry, University of New South Wales (UNSW), Sydney, NSW, Australia
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The Role of Quorum Sensing Molecules in Bacterial-Plant Interactions. Metabolites 2023; 13:metabo13010114. [PMID: 36677039 PMCID: PMC9863971 DOI: 10.3390/metabo13010114] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/03/2023] [Accepted: 01/07/2023] [Indexed: 01/12/2023] Open
Abstract
Quorum sensing (QS) is a system of communication of bacterial cells by means of chemical signals called autoinducers, which modulate the behavior of entire populations of Gram-negative and Gram-positive bacteria. Three classes of signaling molecules have been recognized, Al-1, Al-2, Al-3, whose functions are slightly different. However, the phenomenon of quorum sensing is not only concerned with the interactions between bacteria, but the whole spectrum of interspecies interactions. A growing number of research results confirm the important role of QS molecules in the growth stimulation and defense responses in plants. Although many of the details concerning the signaling metabolites of the rhizosphere microflora and plant host are still unknown, Al-1 compounds should be considered as important components of bacterial-plant interactions, leading to the stimulation of plant growth and the biological control of phytopathogens. The use of class 1 autoinducers in plants to induce beneficial activity may be a practical solution to improve plant productivity under field conditions. In addition, researchers are also interested in tools that offer the possibility of regulating the activity of autoinducers by means of degrading enzymes or specific inhibitors (QSI). Current knowledge of QS and QSI provides an excellent foundation for the application of research to biopreparations in agriculture, containing a consortia of AHL-producing bacteria and QS inhibitors and limiting the growth of phytopathogenic organisms.
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Kachhadia R, Kapadia C, Datta R, Jajda H, Danish S, Glick BR. Cloning and characterization of Aiia, an acylhomoserine lactonase from Bacillus cereus RC1 to control soft rot causing pathogen Lelliottia amnigena RCE. Arch Microbiol 2022; 204:665. [DOI: 10.1007/s00203-022-03271-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 11/02/2022]
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