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Dimaria G, Sicilia A, Modica F, Russo M, Bazzano MC, Massimino ME, Piero ARL, Bella P, Catara V. Biocontrol efficacy of Pseudomonas mediterranea PVCT 3C against Plenodomus tracheiphilus: In vitro and in planta mechanisms at early disease stages. Microbiol Res 2024; 287:127833. [PMID: 39032265 DOI: 10.1016/j.micres.2024.127833] [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: 04/09/2024] [Revised: 06/08/2024] [Accepted: 07/04/2024] [Indexed: 07/23/2024]
Abstract
In this study, we investigated the biocontrol activity of the P. mediterranea strain PVCT 3C against Mal secco, a severe disease of citrus caused by the vascular fungus Plenodomus tracheiphilus. In vitro, bacterial diffusible compounds, volatile organic compounds and culture filtrates produced by PVCT 3C reduced the mycelial growth and conidial germination of P. tracheiphilus, also affecting the mycelial pigmentation. The application of bacterial suspensions by leaf-spraying before the inoculation with the pathogen on plants of the highly susceptible species sour orange and lemon led to an overall reduction in incidence and disease index, above all during the early disease stage. PVCT 3C genome was subjected to whole-genome shotgun sequencing to study the molecular mechanisms of action of this strain. In silico annotation of biosynthetic gene clusters for secondary metabolites revealed the presence of numerous clusters encoding antimicrobial compounds (e.g. cyclic lipopeptides, hydrogen cyanide, siderophores) and candidate novel products. During the asymptomatic disease phase (seven days post-inoculation), bacterial treatments interfered with the expression of different fungal genes, as assessed with an NGS and de novo assembly RNA-seq approach. These results suggest that P. mediterranea PVCT 3C or its secondary metabolites may offer a potential effective and sustainable alternative to contain P. tracheiphilus infections via integrated management.
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Affiliation(s)
- Giulio Dimaria
- Department of Agriculture, Food, and Environment, University of Catania, Via Santa Sofia 100, Catania 95123, Italy
| | - Angelo Sicilia
- Department of Agriculture, Food, and Environment, University of Catania, Via Santa Sofia 100, Catania 95123, Italy
| | - Francesco Modica
- Department of Agriculture, Food, and Environment, University of Catania, Via Santa Sofia 100, Catania 95123, Italy
| | | | | | - Maria Elena Massimino
- Department of Agriculture, Food, and Environment, University of Catania, Via Santa Sofia 100, Catania 95123, Italy
| | - Angela Roberta Lo Piero
- Department of Agriculture, Food, and Environment, University of Catania, Via Santa Sofia 100, Catania 95123, Italy
| | - Patrizia Bella
- Department of Agricultural, Food and Forest Sciences, University of Palermo, Palermo 90128, Italy
| | - Vittoria Catara
- Department of Agriculture, Food, and Environment, University of Catania, Via Santa Sofia 100, Catania 95123, Italy.
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Chai L, Zaburdaev V, Kolter R. How bacteria actively use passive physics to make biofilms. Proc Natl Acad Sci U S A 2024; 121:e2403842121. [PMID: 39264745 DOI: 10.1073/pnas.2403842121] [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] [Indexed: 09/14/2024] Open
Abstract
Modern molecular microbiology elucidates the organizational principles of bacterial biofilms via detailed examination of the interplay between signaling and gene regulation. A complementary biophysical approach studies the mesoscopic dependencies at the cellular and multicellular levels with a distinct focus on intercellular forces and mechanical properties of whole biofilms. Here, motivated by recent advances in biofilm research and in other, seemingly unrelated fields of biology and physics, we propose a perspective that links the biofilm, a dynamic multicellular organism, with the physical processes occurring in the extracellular milieu. Using Bacillus subtilis as an illustrative model organism, we specifically demonstrate how such a rationale explains biofilm architecture, differentiation, communication, and stress responses such as desiccation tolerance, metabolism, and physiology across multiple scales-from matrix proteins and polysaccharides to macroscopic wrinkles and water-filled channels.
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Affiliation(s)
- Liraz Chai
- Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem 9190401, Israel
- The Harvey M. Krueger Family Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
- Max Planck Queensland Centre, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Vasily Zaburdaev
- Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen 91058, Germany
- Max-Planck-Zentrum für Physik und Medizin, Erlangen 91058, Germany
| | - Roberto Kolter
- Department of Microbiology, Harvard Medical School, Boston, MA 02115
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3
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Surwase AJ, Thakur NL. Production of marine-derived bioactive peptide molecules for industrial applications: A reverse engineering approach. Biotechnol Adv 2024:108449. [PMID: 39260778 DOI: 10.1016/j.biotechadv.2024.108449] [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: 07/13/2023] [Revised: 06/28/2024] [Accepted: 09/07/2024] [Indexed: 09/13/2024]
Abstract
This review examines a wide range of marine microbial-derived bioactive peptide molecules, emphasizing the significance of reverse engineering in their production. The discussion encompasses the advancements in Marine Natural Products (MNPs) bio-manufacturing through the integration of omics-driven microbial engineering and bioinformatics. The distinctive features of non-ribosomally synthesised peptides (NRPs), and ribosomally synthesised precursor peptides (RiPP) biosynthesis is elucidated and presented. Additionally, the article delves into the origins of common peptide modifications. It highlights various genome mining approaches for the targeted identification of Biosynthetic Gene Clusters (BGCs) and novel RiPP and NRPs-derived peptides. The review aims to demonstrate the advancements, prospects, and obstacles in engineering both RiPP and NRP biosynthetic pathways.
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Affiliation(s)
- Akash J Surwase
- CSIR-National Institute of Oceanography, Dona Paula 403004, Goa, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Narsinh L Thakur
- CSIR-National Institute of Oceanography, Dona Paula 403004, Goa, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Mukherjee P, Dutta J, Roy M, Thakur TK, Mitra A. Plant growth-promoting rhizobacterial secondary metabolites in augmenting heavy metal(loid) phytoremediation: An integrated green in situ ecorestorative technology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34706-8. [PMID: 39251536 DOI: 10.1007/s11356-024-34706-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 11/17/2022] [Indexed: 09/11/2024]
Abstract
In recent times, increased geogenic and human-centric activities have caused significant heavy metal(loid) (HM) contamination of soil, adversely impacting environmental, plant, and human health. Phytoremediation is an evolving, cost-effective, environment-friendly, in situ technology that employs indigenous/exotic plant species as natural purifiers to remove toxic HM(s) from deteriorated ambient soil. Interestingly, the plant's rhizomicrobiome is pivotal in promoting overall plant nutrition, health, and phytoremediation. Certain secondary metabolites produced by plant growth-promoting rhizobacteria (PGPR) directly participate in HM bioremediation through chelation/mobilization/sequestration/bioadsorption/bioaccumulation, thus altering metal(loid) bioavailability for their uptake, accumulation, and translocation by plants. Moreover, the metallotolerance of the PGPR and the host plant is another critical factor for the successful phytoremediation of metal(loid)-polluted soil. Among the phytotechniques available for HM remediation, phytoextraction/phytoaccumulation (HM mobilization, uptake, and accumulation within the different plant tissues) and phytosequestration/phytostabilization (HM immobilization within the soil) have gained momentum in recent years. Natural metal(loid)-hyperaccumulating plants have the potential to assimilate increased levels of metal(loid)s, and several such species have already been identified as potential candidates for HM phytoremediation. Furthermore, the development of transgenic rhizobacterial and/or plant strains with enhanced environmental adaptability and metal(loid) uptake ability using genetic engineering might open new avenues in PGPR-assisted phytoremediation technologies. With the use of the Geographic Information System (GIS) for identifying metal(loid)-impacted lands and an appropriate combination of normal/transgenic (hyper)accumulator plant(s) and rhizobacterial inoculant(s), it is possible to develop efficient integrated phytobial remediation strategies in boosting the clean-up process over vast regions of HM-contaminated sites and eventually restore ecosystem health.
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Affiliation(s)
- Pritam Mukherjee
- Department of Oceanography, Techno India University, West Bengal, EM 4/1 Sector V, Salt Lake, Kolkata, 700091, West Bengal, India.
| | - Joystu Dutta
- Department of Environmental Science, University Teaching Department, Sant Gahira Guru University, Ambikapur, 497001, Chhattisgarh, India
| | - Madhumita Roy
- Department of Microbiology, Bose Institute, P-1/12, CIT Road, Scheme VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India
| | - Tarun Kumar Thakur
- Department of Environmental Science, Indira Gandhi National Tribal University, Amarkantak, 484886, Madhya Pradesh, India
| | - Abhijit Mitra
- Department of Marine Science, University of Calcutta, 35 B. C. Road, Kolkata, 700019, West Bengal, India
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Muangkaew P, Prasad D, De Roo V, Verleysen Y, Zhou L, De Mot R, Höfte M, Madder A, Geudens N, Martins JC. Breaking Cycles: Saponification-Enhanced NMR Fingerprint Matching for the Identification and Stereochemical Evaluation of Cyclic Lipodepsipeptides from Natural Sources. Chemistry 2024; 30:e202400667. [PMID: 38647356 DOI: 10.1002/chem.202400667] [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: 02/19/2024] [Revised: 04/19/2024] [Accepted: 04/21/2024] [Indexed: 04/25/2024]
Abstract
We previously described NMR based fingerprint matching with peptide backbone resonances as a fast and reliable structural dereplication approach for Pseudomonas cyclic lipodepsipeptides (CLiPs). In combination with total synthesis of a small library of configurational CLiP congeners this also allows unambiguous determination of stereochemistry, facilitating structure-activity relationship studies and enabling three-dimensional structure determination. However, the on-resin macrocycle formation in the synthetic workflow brings considerable burden and limits universal applicability. This drawback is here removed altogether by also transforming the native CLiP into a linearized analogue by controlled saponification of the ester bond. This eliminates the need for macrocycle formation, limiting the synthesis effort to linear peptide analogues. NMR fingerprints of such linear peptide analogues display a sufficiently distinctive chemical shift fingerprint to act as effective discriminators. The approach is developed using viscosin group CLiPs and subsequently demonstrated on putisolvin, leading to a structural revision, and tanniamide from Pseudomonas ekonensis COR58, a newly isolated lipododecapeptide that defines a new group characterized by a ten-residue large macrocycle, the largest to date in the Pseudomonas CLiP portfolio. These examples demonstrate the effectiveness of the saponification- enhanced approach that broadens applicability of NMR fingerprint matching for the determination of the stereochemistry of CLiPs.
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Affiliation(s)
- Penthip Muangkaew
- Organic Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4bis, 9000, Ghent, Belgium
| | - Durga Prasad
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4bis, 9000, Ghent, Belgium
| | - Vic De Roo
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4bis, 9000, Ghent, Belgium
| | - Yentl Verleysen
- Organic Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4bis, 9000, Ghent, Belgium
| | - Lu Zhou
- Laboratory of Phytopathology, Department of Plants and Crops, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - René De Mot
- Centre for Microbial and Plant Genetics, Faculty of Bioscience Engineering, KULeuven, Kasteelpark Arenberg 20, 3001, Leuven, Belgium
| | - Monica Höfte
- Laboratory of Phytopathology, Department of Plants and Crops, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Annemieke Madder
- Organic Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4bis, 9000, Ghent, Belgium
| | - Niels Geudens
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4bis, 9000, Ghent, Belgium
| | - José C Martins
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, S4bis, 9000, Ghent, Belgium
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Gilhar O, Ben-Navi LR, Olender T, Aharoni A, Friedman J, Kolodkin-Gal I. Multigenerational inheritance drives symbiotic interactions of the bacterium Bacillus subtilis with its plant host. Microbiol Res 2024; 286:127814. [PMID: 38954993 DOI: 10.1016/j.micres.2024.127814] [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: 04/13/2024] [Revised: 06/04/2024] [Accepted: 06/18/2024] [Indexed: 07/04/2024]
Abstract
Bacillus subtilis is a beneficial bacterium that supports plant growth and protects plants from bacterial, fungal, and viral infections. Using a simplified system of B. subtilis and Arabidopsis thaliana interactions, we studied the fitness and transcriptome of bacteria detached from the root over generations of growth in LB medium. We found that bacteria previously associated with the root or exposed to its secretions had greater stress tolerance and were more competitive in root colonization than bacteria not previously exposed to the root. Furthermore, our transcriptome results provide evidence that plant secretions induce a microbial stress response and fundamentally alter signaling by the cyclic nucleotide c-di-AMP, a signature maintained by their descendants. The changes in cellular physiology due to exposure to plant exudates were multigenerational, as they allowed not only the bacterial cells that colonized a new plant but also their descendants to have an advance over naive competitors of the same species, while the overall plasticity of gene expression and rapid adaptation were maintained. These changes were hereditary but not permanent. Our work demonstrates a bacterial memory manifested by multigenerational reversible adaptation to plant hosts in the form of activation of the stressosome, which confers an advantage to symbiotic bacteria during competition.
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Affiliation(s)
- Omri Gilhar
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel; Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | | | - Tsviya Olender
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Asaph Aharoni
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Jonathan Friedman
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Ilana Kolodkin-Gal
- Scojen Institute for Synthetic Biology, Reichman University, Herzliya, Israel.
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7
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Rajewska M, Maciąg T, Narajczyk M, Jafra S. Carbon Source and Substrate Surface Affect Biofilm Formation by the Plant-Associated Bacterium Pseudomonas donghuensis P482. Int J Mol Sci 2024; 25:8351. [PMID: 39125921 PMCID: PMC11312691 DOI: 10.3390/ijms25158351] [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: 07/05/2024] [Revised: 07/25/2024] [Accepted: 07/26/2024] [Indexed: 08/12/2024] Open
Abstract
The ability of bacteria to colonize diverse environmental niches is often linked to their competence in biofilm formation. It depends on the individual characteristics of a strain, the nature of the colonized surface (abiotic or biotic), or the availability of certain nutrients. Pseudomonas donghuensis P482 efficiently colonizes the rhizosphere of various plant hosts, but a connection between plant tissue colonization and the biofilm formation ability of this strain has not yet been established. We demonstrate here that the potential of P482 to form biofilms on abiotic surfaces and the structural characteristics of the biofilm are influenced by the carbon source available to the bacterium, with glycerol promoting the process. Also, the type of substratum, polystyrene or glass, impacts the ability of P482 to attach to the surface. Moreover, P482 mutants in genes associated with motility or chemotaxis, the synthesis of polysaccharides, and encoding proteases or regulatory factors, which affect biofilm formation on glass, were fully capable of colonizing the root tissue of both tomato and maize hosts. Investigating the role of cellular factors in biofilm formation using these plant-associated bacteria shows that the ability of bacteria to form biofilm on abiotic surfaces does not necessarily mirror its ability to colonize plant tissues. Our research provides a broader perspective on the adaptation of these bacteria to various environments.
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Affiliation(s)
- Magdalena Rajewska
- Laboratory of Plant Microbiology, Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Abrahama 58, 80-307 Gdansk, Poland;
| | - Tomasz Maciąg
- Institute of Biology, Department of Botany, Warsaw University of Life Sciences, Nowoursynowska 159, 02-776 Warsaw, Poland;
| | - Magdalena Narajczyk
- Laboratory of Electron Microscopy, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland;
| | - Sylwia Jafra
- Laboratory of Plant Microbiology, Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Abrahama 58, 80-307 Gdansk, Poland;
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Schmid PJ, Forstner P, Kittinger C. Sliding motility of Bacillus cereus mediates vancomycin pseudo-resistance during antimicrobial susceptibility testing. J Antimicrob Chemother 2024; 79:1628-1636. [PMID: 38785365 PMCID: PMC11215547 DOI: 10.1093/jac/dkae156] [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: 02/13/2024] [Accepted: 04/30/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND The glycopeptide vancomycin is the antimicrobial agent-of-choice for the treatment of severe non-gastrointestinal infections with members of Bacillus cereus sensu lato (s.l.). Recently, sporadic detection of vancomycin-resistant phenotypes emerged, mostly for agar diffusion testing such as the disc diffusion method or gradient test (e.g. Etest®) method. RESULTS In this work, we were able to disprove a preliminarily assumed high resistance to vancomycin in an isolate of B. cereus s.l. using broth microdilution and agar dilution. Microscopic imaging during vancomycin susceptibility testing showed spreading towards the inhibition zone, which strongly suggested sliding motility. Furthermore, transcriptomic analysis using RNA-Seq on the nanopore platform revealed several key genes of biofilm formation (e.g. calY, tasA, krsEABC) to be up-regulated in pseudo-resistant cells, substantiating that bacterial sliding is responsible for the observed mobility. Down-regulation of virulence (e.g. hblABCD, nheABC, plcR) and flagellar genes compared with swarming cells also confirmed the non-swarming phenotype of the pseudo-resistant isolate. CONCLUSIONS The results highlight an insufficiency of agar diffusion testing for vancomycin susceptibility in the B. cereus group, and reference methods like broth microdilution are strongly recommended. As currently no guideline mentions interfering phenotypes in antimicrobial susceptibility testing of B. cereus s.l., this knowledge is essential to obtain reliable results on vancomycin susceptibility. In addition, this is the first report of sliding motility undermining accurate antimicrobial susceptibility testing in B. cereus s.l. and may serve as a basis for future studies on bacterial motility in susceptibility testing and its potential impact on treatment efficacy.
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Affiliation(s)
- Paul J Schmid
- Diagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Diagnostic and Research Center for Molecular Biomedicine, Medical University of Graz, Graz, Austria
| | - Patrick Forstner
- Diagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Diagnostic and Research Center for Molecular Biomedicine, Medical University of Graz, Graz, Austria
| | - Clemens Kittinger
- Diagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Diagnostic and Research Center for Molecular Biomedicine, Medical University of Graz, Graz, Austria
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Wesche J, Schnabel G. Influence of Propiconazole and Metconazole Formulations on Bacillus subtilis Vegetative Cell Growth and Disease Control of Fruit Crops. PHYTOPATHOLOGY 2024; 114:1515-1524. [PMID: 38489213 DOI: 10.1094/phyto-01-24-0029-r] [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: 03/17/2024]
Abstract
Biological control agent Bacillus subtilis formulated as Theia is registered for control of fungal and bacterial diseases of fruit crops. Combinations of Theia and strategic concentrations of two demethylation inhibitor (DMI) fungicides were investigated to explore potential synergisms. Bacteria were cultured in nutrient broth and combined with technical grades and two formulations of propiconazole (emulsifiable concentrate [EC] and wettable powder) and metconazole (EC and water-dispersible granule) at 0, 10, 50, 100, and 150 µg/ml of active ingredient. After cocultivation, the optical density (OD600) and colony forming units (CFU/ml) were evaluated. In contrast to EC formulations, the wettable powder or water-dispersible granule formulations at 10 or 50 µg/ml of both DMIs did not affect vegetative cell growth. The mixture of Theia and each formulated DMI at 50 µg/ml of active ingredient resulted in a significant reduction of Monilinia fructicola lesion development on apple, Colletotrichum siamense lesion development on cherry, and Botrytis cinerea lesion development on cherry. The combination of Theia with EC formulations showed weaker disease reduction due to antagonism. Only Theia plus non-EC formulated propiconazole and metconazole significantly reduced brown rot disease incidence of apple compared with the respective solo treatments and anthracnose disease incidence of cherry compared with the untreated control. Our results indicated that at least some DMI fungicides possess bactericidal effects depending on the formulation and concentration. The combination of Theia with a lower-than-label-rate concentration (50 µg/ml) of the DMI fungicides propiconazole and metconazole showed potential for synergistic effects, especially when non-EC formulations were used.
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Affiliation(s)
- Johanna Wesche
- Department of Plant and Environmental Science, Clemson University, 105 Collings Street Clemson, SC 29634
| | - Guido Schnabel
- Department of Plant and Environmental Science, Clemson University, 105 Collings Street Clemson, SC 29634
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Liao K, Wu J, Wang C, Li JZ, Wei HL. Pseudomonas beijingensis sp. nov., a novel species widely colonizing plant rhizosphere. Int J Syst Evol Microbiol 2024; 74:006473. [PMID: 39058535 PMCID: PMC11281800 DOI: 10.1099/ijsem.0.006473] [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: 03/21/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
A polyphasic taxonomic approach was used to characterize the three bacterial strains (FP830T, FP2034, and FP2262) isolated from the rhizosphere soil of rice, corn, and highland barley in Beijing, Heilongjiang, and Tibet, respectively, in PR China. These strains were Gram-negative, rod-shaped, and have one or two polar flagella. They exhibited optimal growth at 28 °C and pH 7.0 in the presence of 1 % (w/v) NaCl and showed fluorescence under ultraviolet light when cultivated on King's B plates. The FP830T genome size is 6.4 Mbp with a G+C content of 61.0 mol%. FP830T has the potential to promote plant growth by producing various metabolites such as fengycin, pyoverdin, indole-3-acetic acid, and the volatile substance 2,3-butanediol. Phylogenetic analysis indicated that three isolates formed an independent branch, which most closely related to type strains Pseudomonas thivervalensis DSM 13194T and Pseudomonas zanjanensis SWRI12T. The values of average nucleotide identity and digital DNA-DNA hybridization between three isolates and closest relatives were not higher than 93.7 and 52.3 %, respectively. The dominant cellular fatty acids were C16 : 0, summed feature 3 (C16 : 1 ω7c/C16 : 1 ω6c), and summed feature 8 (C18 : 1 ω7c/C18 : 1 ω6c). The major polar lipids were phosphatidylethanolamine, diphosphatidylglycerol, and aminophospholipid. The predominant respiratory quinone was ubiquinone (Q-9). Based on polyphasic taxonomic analysis, it was concluded that strains FP830T, FP2034, and FP2262 represented a novel species within the genus Pseudomonas, and Pseudomonas beijingensis sp. nov. was proposed for the name of novel species. The type strain is FP830T (=ACCC 62448T=JCM 35689T).
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Affiliation(s)
- Kaiji Liao
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Jingyi Wu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Can Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Jun-Zhou Li
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Hai-Lei Wei
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
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11
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Assena MW, Pfannstiel J, Rasche F. Inhibitory activity of bacterial lipopeptides against Fusarium oxysporum f.sp. Strigae. BMC Microbiol 2024; 24:227. [PMID: 38937715 PMCID: PMC11212183 DOI: 10.1186/s12866-024-03386-2] [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: 07/25/2023] [Accepted: 06/18/2024] [Indexed: 06/29/2024] Open
Abstract
This study investigated the influence of bacterial cyclic lipopeptides (LP; surfactins, iturins, fengycins) on microbial interactions. The objective was to investigate whether the presence of bacteria inhibits fungal growth and whether this inhibition is due to the release of bacterial metabolites, particularly LP. Selected endophytic bacterial strains with known plant-growth promoting potential were cultured in the presence of Fusarium oxysporum f.sp. strigae (Fos), which was applied as model fungal organism. The extracellular metabolome of tested bacteria, with a focus on LP, was characterized, and the inhibitory effect of bacterial LP on fungal growth was investigated. The results showed that Bacillus velezensis GB03 and FZB42, as well as B. subtilis BSn5 exhibited the strongest antagonism against Fos. Paraburkholderia phytofirmans PsJN, on the other hand, tended to have a slight, though non-significant growth promotion effect. Crude LP from strains GB03 and FZB42 had the strongest inhibitory effect on Fos, with a significant inhibition of spore germination and damage of the hyphal structure. Liquid chromatography tandem mass spectrometry revealed the production of several variants of iturin, fengycin, and surfactin LP families from strains GB03, FZB42, and BSn5, with varying intensity. Using plate cultures, bacillomycin D fractions were detected in higher abundance in strains GB03, FZB42, and BSn5 in the presence of Fos. Additionally, the presence of Fos in dual plate culture triggered an increase in bacillomycin D production from the Bacillus strains. The study demonstrated the potent antagonistic effect of certain Bacillus strains (i.e., GB03, FZB42, BSn5) on Fos development. Our findings emphasize the crucial role of microbial interactions in shaping the co-existence of microbial assemblages.
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Affiliation(s)
- Mekuria Wolde Assena
- Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, Garbenstr. 13, 70599, Stuttgart, Germany
- Department of Horticulture, Wolkite University, Wolkite, Ethiopia
| | - Jens Pfannstiel
- Core Facility Hohenheim, Mass Spectrometry Unit, University of Hohenheim, Ottilie-Zeller- Weg 2, 70599, Stuttgart, Germany
| | - Frank Rasche
- Institute of Agricultural Sciences in the Tropics (Hans-Ruthenberg-Institute), University of Hohenheim, Garbenstr. 13, 70599, Stuttgart, Germany.
- International Institute of Tropical Agriculture, P.O. Box 30772-00100, Nairobi, Kenya.
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12
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Mullally CA, Fahriani M, Mowlaboccus S, Coombs GW. Non- faecium non- faecalis enterococci: a review of clinical manifestations, virulence factors, and antimicrobial resistance. Clin Microbiol Rev 2024; 37:e0012123. [PMID: 38466110 PMCID: PMC11237509 DOI: 10.1128/cmr.00121-23] [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: 03/12/2024] Open
Abstract
SUMMARYEnterococci are a diverse group of Gram-positive bacteria that are typically found as commensals in humans, animals, and the environment. Occasionally, they may cause clinically relevant diseases such as endocarditis, septicemia, urinary tract infections, and wound infections. The majority of clinical infections in humans are caused by two species: Enterococcus faecium and Enterococcus faecalis. However, there is an increasing number of clinical infections caused by non-faecium non-faecalis (NFF) enterococci. Although NFF enterococcal species are often overlooked, studies have shown that they may harbor antimicrobial resistance (AMR) genes and virulence factors that are found in E. faecium and E. faecalis. In this review, we present an overview of the NFF enterococci with a particular focus on human clinical manifestations, epidemiology, virulence genes, and AMR genes.
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Affiliation(s)
- Christopher A Mullally
- Antimicrobial Resistance and Infectious Diseases (AMRID) Research Laboratory, Murdoch University, Murdoch, Western Australia, Australia
- The Marshall Centre for Infectious Diseases Research and Training, School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Marhami Fahriani
- Antimicrobial Resistance and Infectious Diseases (AMRID) Research Laboratory, Murdoch University, Murdoch, Western Australia, Australia
| | - Shakeel Mowlaboccus
- Antimicrobial Resistance and Infectious Diseases (AMRID) Research Laboratory, Murdoch University, Murdoch, Western Australia, Australia
- The Marshall Centre for Infectious Diseases Research and Training, School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
- PathWest Laboratory Medicine-WA, Department of Microbiology, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Geoffrey W Coombs
- Antimicrobial Resistance and Infectious Diseases (AMRID) Research Laboratory, Murdoch University, Murdoch, Western Australia, Australia
- The Marshall Centre for Infectious Diseases Research and Training, School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
- PathWest Laboratory Medicine-WA, Department of Microbiology, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
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13
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Ze M, Ma F, Zhang J, Duan J, Feng D, Shen Y, Chen G, Hu X, Dong M, Qi T, Zou L. Beneficial effects of Bacillus mojavensis strain MTC-8 on plant growth, immunity and disease resistance against Magnaporthe oryzae. Front Microbiol 2024; 15:1422476. [PMID: 38933037 PMCID: PMC11199545 DOI: 10.3389/fmicb.2024.1422476] [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: 04/28/2024] [Accepted: 05/29/2024] [Indexed: 06/28/2024] Open
Abstract
Rice blast, a prevalent and highly destructive rice disease that significantly impacts rice yield, is caused by the rice blast fungus. In the present study, a strain named MTC-8, identified as Bacillus mojavensis, was demonstrated has strong antagonistic activity against the rice blast fungus, Rhizoctonia solani, Ustilaginoidea virens, and Bipolaria maydis. The potential biocontrol agents were identified using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) analysis and chromatography. Further investigations elucidated the inhibitory mechanism of the isolated compound and demonstrated its ability to suppress spore germination, alter hyphal morphology, disrupt cell membrane integrity, and induce defense-related gene expression in rice. MTC-8 promoted plant growth and may lead to the development of a biocontrol agent that meets agricultural standards. Overall, the Bacillus mojavensis MTC-8 strain exerted beneficial effects on plant growth, immunity and disease resistance against rice blast fungus. In this study, we isolated and purified a bioactive substance from fermentation broth, and the results provide a foundation for the development and application of biopesticides. Elucidation of the inhibitory mechanism against rice blast fungus provides theoretical support for the identification of molecular targets. The successful development of a biocontrol agent lays the groundwork for its practical application in agriculture.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Tuo Qi
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Teachers' College, Mianyang, China
| | - Lijuan Zou
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Teachers' College, Mianyang, China
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14
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Morandini L, Caulier S, Bragard C, Mahillon J. Bacillus cereus sensu lato antimicrobial arsenal: An overview. Microbiol Res 2024; 283:127697. [PMID: 38522411 DOI: 10.1016/j.micres.2024.127697] [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: 12/17/2023] [Revised: 02/25/2024] [Accepted: 03/16/2024] [Indexed: 03/26/2024]
Abstract
The Bacillus cereus group contains genetically closed bacteria displaying a variety of phenotypic features and lifestyles. The group is mainly known through the properties of three major species: the entomopathogen Bacillus thuringiensis, the animal and human pathogen Bacillus anthracis and the foodborne opportunistic strains of B. cereus sensu stricto. Yet, the actual diversity of the group is far broader and includes multiple lifestyles. Another less-appreciated aspect of B. cereus members lies within their antimicrobial potential which deserves consideration in the context of growing emergence of resistance to antibiotics and pesticides, and makes it crucial to find new sources of antimicrobial molecules. This review presents the state of knowledge on the known antimicrobial compounds of the B. cereus group members, which are grouped according to their chemical features and biosynthetic pathways. The objective is to provide a comprehensive review of the antimicrobial range exhibited by this group of bacteria, underscoring the interest in its potent biocontrol arsenal and encouraging further research in this regard.
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Affiliation(s)
| | - Simon Caulier
- Laboratory of Plant Health, Earth and Life Institute, UCLouvain, Louvain-la-Neuve B-1348, Belgium
| | - Claude Bragard
- Laboratory of Plant Health, Earth and Life Institute, UCLouvain, Louvain-la-Neuve B-1348, Belgium
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15
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Ahmed A, He P, He Y, Singh BK, Wu Y, Munir S, He P. Biocontrol of plant pathogens in omics era-with special focus on endophytic bacilli. Crit Rev Biotechnol 2024; 44:562-580. [PMID: 37055183 DOI: 10.1080/07388551.2023.2183379] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 02/06/2023] [Indexed: 04/15/2023]
Abstract
Nearly all plants and their organs are inhabited by endophytic microbes which play a crucial role in plant fitness and stress resilience. Harnessing endophytic services can provide effective solutions for a sustainable increase in agriculture productivity and can be used as a complement or alternative to agrochemicals. Shifting agriculture practices toward the use of nature-based solutions can contribute directly to the global challenges of food security and environmental sustainability. However, microbial inoculants have been used in agriculture for several decades with inconsistent efficacy. Key reasons of this inconsistent efficacy are linked to competition with indigenous soil microflora and inability to colonize plants. Endophytic microbes provide solutions to both of these issues which potentially make them better candidates for microbial inoculants. This article outlines the current advancements in endophytic research with special focus on endophytic bacilli. A better understanding of diverse mechanisms of disease control by bacilli is essential to achieve maximum biocontrol efficacy against multiple phytopathogens. Furthermore, we argue that integration of emerging technologies with strong theoretical frameworks have the potential to revolutionize biocontrol approaches based on endophytic microbes.
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Affiliation(s)
- Ayesha Ahmed
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Pengfei He
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Yueqiu He
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Brajesh K Singh
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith South, New South Wales, Australia
- Global Centre for Land Based Innovation, Western Sydney University, Penrith South, New South Wales, Australia
| | - Yixin Wu
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Shahzad Munir
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Pengbo He
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan Agricultural University, Kunming, Yunnan, China
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16
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Espinosa-Zaragoza S, Domínguez-Liévano A, Gómez-Gutiérrez JA, Wong-Villarreal A, Aguilar-Marcelino L, Cerqueda-García D, Rangel-Zaragoza JL, Sanzón-Gómez D, Mireles-Arriaga AI, Sachman-Ruíz B. In vitro Acaricidal Activity of Serratia Ureilytica Against the Dust Mite Tyrophagus Putrescentiae and Identification of Genes Related to Biocontrol. Curr Microbiol 2024; 81:199. [PMID: 38822161 DOI: 10.1007/s00284-024-03728-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 05/01/2024] [Indexed: 06/02/2024]
Abstract
The present study evaluated the acaricidal activity of three Serratia strains isolated from Mimosa pudica nodules in the Lancandon zone Chiapas, Mexico. The analysis of the genomes based on the Average Nucleotide Identity, the phylogenetic relationships allows the isolates to be placed in the Serria ureilytica clade. The size of the genomes of the three strains is 5.4 Mb, with a GC content of 59%. The Serratia UTS2 strain presented the highest mortality with 61.41% against Tyrophagus putrescentiae followed by the Serratia UTS4 strain with 52.66% and Serratia UTS3 with 47.69% at 72 h at a concentration of 1X109 cell/mL. In the bioinformatic analysis of the genomes, genes related to the synthesis of chitinases, proteases and cellulases were identified, which have been reported for the biocontrol of mites. It is the first report of S. ureilytica with acaricidal activity, which may be an alternative for the biocontrol of stored products with high fat and protein content.
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Affiliation(s)
- Saúl Espinosa-Zaragoza
- Facultad de Ciencias Agrícolas, Universidad Autónoma de Chiapas, 30660, Huehuetán, Mexico
| | - Alexis Domínguez-Liévano
- Departamento Ciencias de La Sustentabilidad, El Colegio de La Frontera Sur, Unidad Tapachula, Chiapas, México
| | - Jaime Adriel Gómez-Gutiérrez
- Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Morelos Cuernavaca, Morelos, 62209, México
| | | | - Liliana Aguilar-Marcelino
- National Center for Disciplinary Research in Animal Health and Safety (INIFAP), Km 11 Federal Road Cuernavaca-Cuautla, 62550, Jiutepec, MR, Mexico.
| | - Daniel Cerqueda-García
- Red de Manejo Biorracional de Plagas y Vectores, Instituto de Ecología, A.C. - INECOL.Carretera Antigua a Coatepec No. 351, Col. El Haya, 91073, Xalapa, Ver, México
| | - José Luis Rangel-Zaragoza
- Dirección General de Sanidad Vegetal, Centro Nacional de Referencia Fitosanitaria, Km. 37.5, Carretera Federal México-Pachuca, Av. Centenario de La Educación, Col. Santa Ana, 55740, Tecámac, Edo, Mexico
| | - Diana Sanzón-Gómez
- División Ciencias de La Vida, Departamento de Agronomía, Universidad de Guanajuato, Campus Irapuato-Salamanca, 36500, Irapuato, Mexico
| | - Ana Isabel Mireles-Arriaga
- Departamento de Agronomía, División Ciencias de La Vida, Campus Irapuato-Salamanca, Universidad de Guanajuato, 36500, Irapuato, Mexico
| | - Bernardo Sachman-Ruíz
- National Center for Disciplinary Research in Animal Health and Safety (INIFAP), Km 11 Federal Road Cuernavaca-Cuautla, 62550, Jiutepec, MR, Mexico
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17
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Getzke F, Wang L, Chesneau G, Böhringer N, Mesny F, Denissen N, Wesseler H, Adisa PT, Marner M, Schulze-Lefert P, Schäberle TF, Hacquard S. Physiochemical interaction between osmotic stress and a bacterial exometabolite promotes plant disease. Nat Commun 2024; 15:4438. [PMID: 38806462 PMCID: PMC11133316 DOI: 10.1038/s41467-024-48517-5] [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: 09/08/2023] [Accepted: 05/01/2024] [Indexed: 05/30/2024] Open
Abstract
Various microbes isolated from healthy plants are detrimental under laboratory conditions, indicating the existence of molecular mechanisms preventing disease in nature. Here, we demonstrated that application of sodium chloride (NaCl) in natural and gnotobiotic soil systems is sufficient to induce plant disease caused by an otherwise non-pathogenic root-derived Pseudomonas brassicacearum isolate (R401). Disease caused by combinatorial treatment of NaCl and R401 triggered extensive, root-specific transcriptional reprogramming that did not involve down-regulation of host innate immune genes, nor dampening of ROS-mediated immunity. Instead, we identified and structurally characterized the R401 lipopeptide brassicapeptin A as necessary and sufficient to promote disease on salt-treated plants. Brassicapeptin A production is salt-inducible, promotes root colonization and transitions R401 from being beneficial to being detrimental on salt-treated plants by disturbing host ion homeostasis, thereby bolstering susceptibility to osmolytes. We conclude that the interaction between a global change stressor and a single exometabolite from a member of the root microbiome promotes plant disease in complex soil systems.
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Affiliation(s)
- Felix Getzke
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
| | - Lei Wang
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392, Giessen, Germany
| | - Guillaume Chesneau
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
| | - Nils Böhringer
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392, Giessen, Germany
- German Center for Infection Research (DZIF), Partner Site Giessen-Marburg-Langen, 35392, Giessen, Germany
| | - Fantin Mesny
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
- Institute for Plant Sciences, University of Cologne, 50674, Cologne, Germany
| | - Nienke Denissen
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
| | - Hidde Wesseler
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
| | - Priscilla Tijesuni Adisa
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
| | - Michael Marner
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392, Giessen, Germany
| | - Paul Schulze-Lefert
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
- Cluster of Excellence on Plant Sciences (CEPLAS), Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
| | - Till F Schäberle
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392, Giessen, Germany.
- German Center for Infection Research (DZIF), Partner Site Giessen-Marburg-Langen, 35392, Giessen, Germany.
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392, Giessen, Germany.
| | - Stéphane Hacquard
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany.
- Cluster of Excellence on Plant Sciences (CEPLAS), Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany.
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18
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Barone GD, Zhou Y, Wang H, Xu S, Ma Z, Cernava T, Chen Y. Implications of bacteria‒bacteria interactions within the plant microbiota for plant health and productivity. J Zhejiang Univ Sci B 2024:1-16. [PMID: 38773879 DOI: 10.1631/jzus.b2300914] [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: 12/14/2023] [Accepted: 02/26/2024] [Indexed: 05/24/2024]
Abstract
Crop production currently relies on the widespread use of agrochemicals to ensure food security. This practice is considered unsustainable, yet has no viable alternative at present. The plant microbiota can fulfil various functions for its host, some of which could be the basis for developing sustainable protection and fertilization strategies for plants without relying on chemicals. To harness such functions, a detailed understanding of plant‒microbe and microbe‒microbe interactions is necessary. Among interactions within the plant microbiota, those between bacteria are the most common ones; they are not only of ecological importance but also essential for maintaining the health and productivity of the host plants. This review focuses on recent literature in this field and highlights various consequences of bacteria‒bacteria interactions under different agricultural settings. In addition, the molecular and genetic backgrounds of bacteria that facilitate such interactions are emphasized. Representative examples of commonly found bacterial metabolites with bioactive properties, as well as their modes of action, are given. Integrating our understanding of various binary interactions into complex models that encompass the entire microbiota will benefit future developments in agriculture and beyond, which could be further facilitated by artificial intelligence-based technologies.
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Affiliation(s)
| | - Yaqi Zhou
- State Key Laboratory of Rice Biology and Breeding; Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects; Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects; Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Hongkai Wang
- State Key Laboratory of Rice Biology and Breeding; Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects; Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects; Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Sunde Xu
- State Key Laboratory of Rice Biology and Breeding; Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects; Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects; Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zhonghua Ma
- State Key Laboratory of Rice Biology and Breeding; Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects; Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects; Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Tomislav Cernava
- School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, SO17 1BJ Southampton, UK.
| | - Yun Chen
- State Key Laboratory of Rice Biology and Breeding; Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects; Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects; Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China.
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19
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Machushynets N, Al Ayed K, Terlouw BR, Du C, Buijs NP, Willemse J, Elsayed SS, Schill J, Trebosc V, Pieren M, Alexander FM, Cochrane SA, Liles MR, Medema MH, Martin NI, van Wezel GP. Discovery and Derivatization of Tridecaptin Antibiotics with Altered Host Specificity and Enhanced Bioactivity. ACS Chem Biol 2024; 19:1106-1115. [PMID: 38602492 PMCID: PMC11106739 DOI: 10.1021/acschembio.4c00034] [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: 01/16/2024] [Revised: 03/13/2024] [Accepted: 03/25/2024] [Indexed: 04/12/2024]
Abstract
The prevalence of multidrug-resistant (MDR) pathogens combined with a decline in antibiotic discovery presents a major challenge for health care. To refill the discovery pipeline, we need to find new ways to uncover new chemical entities. Here, we report the global genome mining-guided discovery of new lipopeptide antibiotics tridecaptin A5 and tridecaptin D, which exhibit unusual bioactivities within their class. The change in the antibacterial spectrum of Oct-TriA5 was explained solely by a Phe to Trp substitution as compared to Oct-TriA1, while Oct-TriD contained 6 substitutions. Metabolomic analysis of producer Paenibacillus sp. JJ-21 validated the predicted amino acid sequence of tridecaptin A5. Screening of tridecaptin analogues substituted at position 9 identified Oct-His9 as a potent congener with exceptional efficacy against Pseudomonas aeruginosa and reduced hemolytic and cytotoxic properties. Our work highlights the promise of tridecaptin analogues to combat MDR pathogens.
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Affiliation(s)
- Nataliia
V. Machushynets
- Molecular
Biotechnology, Institute of Biology, Leiden
University, Leiden 2333 BE, The Netherlands
| | - Karol Al Ayed
- Biological
Chemistry Group, Institute of Biology, Leiden
University, Leiden 2333 BE, The Netherlands
| | - Barbara R. Terlouw
- Bioinformatics
Group, Wageningen University, Wageningen 6700 PB, The Netherlands
| | - Chao Du
- Molecular
Biotechnology, Institute of Biology, Leiden
University, Leiden 2333 BE, The Netherlands
| | - Ned P. Buijs
- Biological
Chemistry Group, Institute of Biology, Leiden
University, Leiden 2333 BE, The Netherlands
| | - Joost Willemse
- Molecular
Biotechnology, Institute of Biology, Leiden
University, Leiden 2333 BE, The Netherlands
| | - Somayah S. Elsayed
- Molecular
Biotechnology, Institute of Biology, Leiden
University, Leiden 2333 BE, The Netherlands
| | - Julian Schill
- BioVersys
AG, c/o Technologiepark, Basel CH-4057, Switzerland
| | - Vincent Trebosc
- BioVersys
AG, c/o Technologiepark, Basel CH-4057, Switzerland
| | - Michel Pieren
- BioVersys
AG, c/o Technologiepark, Basel CH-4057, Switzerland
| | - Francesca M. Alexander
- School of
Chemistry and Chemical Engineering, Queen’s
University of Belfast, Belfast BT9 5AG, United Kingdom
| | - Stephen A. Cochrane
- School of
Chemistry and Chemical Engineering, Queen’s
University of Belfast, Belfast BT9 5AG, United Kingdom
| | - Mark R. Liles
- Department
of Biological Sciences, Auburn University, Auburn, Alabama 36849, United States
| | - Marnix H. Medema
- Bioinformatics
Group, Wageningen University, Wageningen 6700 PB, The Netherlands
| | - Nathaniel I. Martin
- Biological
Chemistry Group, Institute of Biology, Leiden
University, Leiden 2333 BE, The Netherlands
| | - Gilles P. van Wezel
- Molecular
Biotechnology, Institute of Biology, Leiden
University, Leiden 2333 BE, The Netherlands
- Department
of Microbial Ecology, Netherlands Institute
of Ecology, Wageningen 6700 PB, The Netherlands
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20
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Liu Z, Zhang J, Fan C, Sun S, An X, Sun Y, Gao T, Zhang D. Influence of Bacillus subtilis strain Z-14 on microbial ecology of cucumber rhizospheric vermiculite infested with fusarium oxysporum f. sp. cucumerinum. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 201:105875. [PMID: 38685217 DOI: 10.1016/j.pestbp.2024.105875] [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: 02/02/2024] [Revised: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 05/02/2024]
Abstract
Fusarium oxysporum (FO) is a typical soil-borne pathogenic fungus, and the cucumber wilt disease caused by F. oxysporum f. sp. cucumerinum (FOC) seriously affects crop yield and quality. Vermiculite is increasingly being used as a culture substrate; nevertheless, studies exploring the effectiveness and mechanisms of biocontrol bacteria in this substrate are limited. In this study, vermiculite was used as a culture substrate to investigate the control effect of Bacillus subtilis strain Z-14 on cucumber wilt and the rhizospheric microecology, focusing on colonization ability, soil microbial diversity, and rhizosphere metabolome. Pot experiments showed that Z-14 effectively colonized the cucumber roots, achieving a controlled efficacy of 61.32% for wilt disease. It significantly increased the abundance of Bacillus and the expression of NRPS and PKS genes, while reducing the abundance of FO in the rhizosphere. Microbial diversity sequencing showed that Z-14 reduced the richness and diversity of the rhizosphere bacterial community, increased the richness and diversity of the fungal community, and alleviated the effect of FO on the community structure of the cucumber rhizosphere. The metabolomics analysis revealed that Z-14 affected ABC transporters, amino acid synthesis, and the biosynthesis of plant secondary metabolites. Additionally, Z-14 increased the contents of phenylacetic acid, capsidol, and quinolinic acid, all of which were related to the antagonistic activity in the rhizosphere. Z-14 exhibited a significant control effect on cucumber wilt and influenced the microflora and metabolites in rhizospheric vermiculite, providing a theoretical basis for further understanding the control effect and mechanism of cucumber wilt in different culture substrates.
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Affiliation(s)
- Zhaosha Liu
- College of Life Science, Hebei Agricultural University, Baoding, China; Hebei Provincial Engineering Research Center for Resource Utilization of Agricultural Wastes, Baoding, China
| | - Jizong Zhang
- College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Chenxi Fan
- College of Life Science, Hebei Agricultural University, Baoding, China; Hebei Provincial Engineering Research Center for Resource Utilization of Agricultural Wastes, Baoding, China
| | - Shangyi Sun
- College of Life Science, Hebei Agricultural University, Baoding, China; Hebei Provincial Engineering Research Center for Resource Utilization of Agricultural Wastes, Baoding, China
| | - Xutong An
- College of Life Science, Hebei Agricultural University, Baoding, China; Hebei Provincial Engineering Research Center for Resource Utilization of Agricultural Wastes, Baoding, China
| | - Yanheng Sun
- College of Life Science, Hebei Agricultural University, Baoding, China; Hebei Provincial Engineering Research Center for Resource Utilization of Agricultural Wastes, Baoding, China
| | - Tongguo Gao
- College of Life Science, Hebei Agricultural University, Baoding, China; Hebei Provincial Engineering Research Center for Resource Utilization of Agricultural Wastes, Baoding, China
| | - Dongdong Zhang
- College of Life Science, Hebei Agricultural University, Baoding, China; Hebei Provincial Engineering Research Center for Resource Utilization of Agricultural Wastes, Baoding, China.
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21
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Kunzler M, Schlechter RO, Schreiber L, Remus-Emsermann MNP. Hitching a Ride in the Phyllosphere: Surfactant Production of Pseudomonas spp. Causes Co-swarming of Pantoea eucalypti 299R. MICROBIAL ECOLOGY 2024; 87:62. [PMID: 38683223 PMCID: PMC11058625 DOI: 10.1007/s00248-024-02381-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 04/17/2024] [Indexed: 05/01/2024]
Abstract
Here, we demonstrate the beneficial effect of surfactant-producing pseudomonads on Pantoea eucalypti 299R. We conducted a series of experiments in environments of increasing complexity. P. eucalypti 299R (Pe299R), and Pseudomonas sp. FF1 (Pff1) or Pe299R and surfactant-production deficient Pseudomonas sp. FF1::ΔviscB (Pff1ΔviscB) were co-inoculated in broth, on swarming agar plates, and on plants. In broth, there were no differences in the growth dynamics of Pe299R when growing in the presence of Pff1 or Pff1ΔviscB. By contrast, on swarming agar plates, Pe299R was able to co-swarm with Pff1 which led to a significant increase in Pe299R biomass compared to Pe299R growing with Pff1ΔviscB or in monoculture. Finally in planta, and using the single-cell bioreporter for reproductive success (CUSPER), we found a temporally distinct beneficial effect of Pff1 on co-inoculated Pe299R subpopulations that did not occur in the presence of Pff1ΔviscB. We tested three additional surfactant-producing pseudomonads and their respective surfactant knockout mutants on PE299R on swarming agar showing similar results. This led us to propose a model for the positive effect of surfactant production during leaf colonization. Our results indicate that co-motility might be common during leaf colonization and adds yet another facet to the already manyfold roles of surfactants.
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Affiliation(s)
- Michael Kunzler
- Institute for Biology - Microbiology, Freie Universität Berlin, Königin-Luise Straße 12-16, 14195, Berlin, Germany
| | - Rudolf O Schlechter
- Institute for Biology - Microbiology, Freie Universität Berlin, Königin-Luise Straße 12-16, 14195, Berlin, Germany
| | - Lukas Schreiber
- Institute for Cellular and Molecular Botany, Bonn University, Kirschallee 1-3, 53115, Bonn, Germany
| | - Mitja N P Remus-Emsermann
- Institute for Biology - Microbiology, Freie Universität Berlin, Königin-Luise Straße 12-16, 14195, Berlin, Germany.
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22
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Sabino YNV, de Araújo Domingues KC, O'Connor PM, Marques PH, Santos EH, Tótola MR, Abreu LM, de Queiroz MV, Cotter PD, Mantovani HC. Bacillus velezensis iturins inhibit the hemolytic activity of Staphylococcus aureus. Sci Rep 2024; 14:9469. [PMID: 38658583 PMCID: PMC11043418 DOI: 10.1038/s41598-024-58973-0] [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: 09/08/2023] [Accepted: 04/05/2024] [Indexed: 04/26/2024] Open
Abstract
Bovine mastitis caused by S. aureus has a major economic impact on the dairy sector. With the crucial need for new therapies, anti-virulence strategies have gained attention as alternatives to antibiotics. Here we aimed to identify novel compounds that inhibit the production/activity of hemolysins, a virulence factor of S. aureus associated with mastitis severity. We screened Bacillus strains obtained from diverse sources for compounds showing anti-hemolytic activity. Our results demonstrate that lipopeptides produced by Bacillus spp. completely prevented the hemolytic activity of S. aureus at certain concentrations. Following purification, both iturins, fengycins, and surfactins were able to reduce hemolysis caused by S. aureus, with iturins showing the highest anti-hemolytic activity (up to 76% reduction). The lipopeptides showed an effect at the post-translational level. Molecular docking simulations demonstrated that these compounds can bind to hemolysin, possibly interfering with enzyme action. Lastly, molecular dynamics analysis indicated general stability of important residues for hemolysin activity as well as the presence of hydrogen bonds between iturins and these residues, with longevous interactions. Our data reveals, for the first time, an anti-hemolytic activity of lipopeptides and highlights the potential application of iturins as an anti-virulence therapy to control bovine mastitis caused by S. aureus.
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Affiliation(s)
| | | | | | - Pedro Henrique Marques
- Department of Microbiology, Immunology and Parasitology, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Eduardo Horta Santos
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | | | | | - Paul D Cotter
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Cork, Ireland
- APC Microbiome Ireland, Cork, Ireland
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23
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Jemil N, Besbes I, Gharbi Y, Triki MA, Cheffi M, Manresa A, Nasri M, Hmidet N. Bacillus methylotrophicus DCS1: Production of Different Lipopeptide Families, In Vitro Antifungal Activity and Suppression of Fusarium Wilt in Tomato Plants. Curr Microbiol 2024; 81:142. [PMID: 38625396 DOI: 10.1007/s00284-024-03660-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 03/02/2024] [Indexed: 04/17/2024]
Abstract
The present work aims to quantitatively and qualitatively monitor the production of lipopeptide mixtures by Bacillus methylotrophicus DCS1 strain in Landy medium and to investigate the antifungal activities of DCS1 strain and its produced lipopeptides. The in vitro activities were tested by the direct confrontation and agar well diffusion methods, while the in vivo study was carried out in order to test the efficiency of DCS1 bacterial suspension in the control of Fusarium wilt in tomato plants. Identification of lipopeptides by mass spectrometry (LC/MSD-TOF) showed that lipopeptide isoforms produced during the first 24 h and 48 h of fermentation are identical, belonging to bacillomycin D and fengycins A and B homologues with a difference in the yield of production. After 72 h of fermentation corresponding to the end of incubation period, B. methylotrophicus DCS1 is able to produce a mixture of surfactin, pumilacidin, iturin A/mycosubtilin, iturin C1, bacillomycin D and fengycins A and B isoforms. The results of in vitro antifungal experiments suggest that B. methylotrophicus DCS1 has a significant potential as a biocontrol agent, owing to lipopeptides produced, endowed with antifungal activity against several phytopathogenic fungi. The curative treatment of tomato plants with DCS1 bacterial suspension was more effective in the protection against Fusarium oxysporum f. sp. radicis-lycopersici (FORL) than the preventive treatment by comparing the average number of leaves remaining healthy after 30 days of each treatment and the appearance of tomato plants roots. The results indicate that B. methylotrophicus DCS1 exhibit a significant suppression of Fusarium wilt symptoms in tomato plants comparable to that of commercial fungicides and could be an alternative to chemically synthesized pesticides.
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Affiliation(s)
- Nawel Jemil
- Laboratory of Enzymatic Engineering and Microbiology, University of Sfax, National Engineering School of Sfax, B.P. 1173-3038, Sfax, Tunisia.
| | - Imen Besbes
- Laboratory of Enzymatic Engineering and Microbiology, University of Sfax, National Engineering School of Sfax, B.P. 1173-3038, Sfax, Tunisia
| | - Yaakoub Gharbi
- Laboratory of Genetic Resources of Olive Tree : Characterization, Valorization and Phytosanitary Protection, Olive Tree Institute, University of Sfax, 3038, Sfax, Tunisia
| | - Mohamed Ali Triki
- Laboratory of Genetic Resources of Olive Tree : Characterization, Valorization and Phytosanitary Protection, Olive Tree Institute, University of Sfax, 3038, Sfax, Tunisia
| | - Manel Cheffi
- Laboratory of Genetic Resources of Olive Tree : Characterization, Valorization and Phytosanitary Protection, Olive Tree Institute, University of Sfax, 3038, Sfax, Tunisia
| | - Angeles Manresa
- Section of Microbiology, Department of Biology, Health and Environment, Faculty of Pharmacy, University of Barcelona, Joan XXIII S/N, 08028, Barcelona, Spain
| | - Moncef Nasri
- Laboratory of Enzymatic Engineering and Microbiology, University of Sfax, National Engineering School of Sfax, B.P. 1173-3038, Sfax, Tunisia
| | - Noomen Hmidet
- Laboratory of Enzymatic Engineering and Microbiology, University of Sfax, National Engineering School of Sfax, B.P. 1173-3038, Sfax, Tunisia
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24
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Paliwal D, Rabiey M, Mauchline TH, Hassani-Pak K, Nauen R, Wagstaff C, Andrews S, Bass C, Jackson RW. Multiple toxins and a protease contribute to the aphid-killing ability of Pseudomonas fluorescens PpR24. Environ Microbiol 2024; 26:e16604. [PMID: 38561900 DOI: 10.1111/1462-2920.16604] [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: 09/20/2023] [Accepted: 02/23/2024] [Indexed: 04/04/2024]
Abstract
Aphids are globally important pests causing damage to a broad range of crops. Due to insecticide resistance, there is an urgent need to develop alternative control strategies. In our previous work, we found Pseudomonas fluorescens PpR24 can orally infect and kill the insecticide-resistant green-peach aphid (Myzus persicae). However, the genetic basis of the insecticidal capability of PpR24 remains unclear. Genome sequencing of PpR24 confirmed the presence of various insecticidal toxins such as Tc (toxin complexes), Rhs (rearrangement hotspot) elements, and other insect-killing proteases. Upon aphids infection with PpR24, RNA-Seq analysis revealed 193 aphid genes were differentially expressed with down-regulation of 16 detoxification genes. In addition, 1325 PpR24 genes (542 were upregulated and 783 downregulated) were subject to differential expression, including genes responsible for secondary metabolite biosynthesis, the iron-restriction response, oxidative stress resistance, and virulence factors. Single and double deletion of candidate virulence genes encoding a secreted protease (AprX) and four toxin components (two TcA-like; one TcB-like; one TcC-like insecticidal toxins) showed that all five genes contribute significantly to aphid killing, particularly AprX. This comprehensive host-pathogen transcriptomic analysis provides novel insight into the molecular basis of bacteria-mediated aphid mortality and the potential of PpR24 as an effective biocontrol agent.
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Affiliation(s)
- Deepa Paliwal
- School of Biological Sciences, University of Reading, Reading, UK
| | - Mojgan Rabiey
- School of Life Sciences, University of Warwick, Coventry, UK
| | - Tim H Mauchline
- Sustainable Soils and Crops, Rothamsted Research, Harpenden, UK
| | | | | | - Carol Wagstaff
- School of Chemistry, Food and Pharmacy, University of Reading, Reading, UK
| | - Simon Andrews
- School of Biological Sciences, University of Reading, Reading, UK
| | | | - Robert W Jackson
- School of Biological Sciences, University of Reading, Reading, UK
- School of Biosciences and Birmingham Institute of Forest Research, University of Birmingham, Birmingham, UK
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25
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Balcha ES, Macey MC, Gemeda MT, Cavalazzi B, Woldesemayat AA. Mining the microbiome of Lake Afdera to gain insights into microbial diversity and biosynthetic potential. FEMS MICROBES 2024; 5:xtae008. [PMID: 38560625 PMCID: PMC10979467 DOI: 10.1093/femsmc/xtae008] [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: 09/02/2023] [Revised: 01/24/2024] [Accepted: 03/05/2024] [Indexed: 04/04/2024] Open
Abstract
Microorganisms inhabiting hypersaline environments have received significant attention due to their ability to thrive under poly-extreme conditions, including high salinity, elevated temperatures and heavy metal stress. They are believed to possess biosynthetic gene clusters (BGCs) that encode secondary metabolites as survival strategy and offer potential biotechnological applications. In this study, we mined BGCs in shotgun metagenomic sequences generated from Lake Afdera, a hypersaline lake in the Afar Depression, Ethiopia. The microbiome of Lake Afdera is predominantly bacterial, with Acinetobacter (18.6%) and Pseudomonas (11.8%) being ubiquitously detected. A total of 94 distinct BGCs were identified in the metagenomic data. These BGCs are found to encode secondary metabolites with two main categories of functions: (i) potential pharmaceutical applications (nonribosomal peptide synthase NRPs, polyketide synthase, others) and (ii) miscellaneous roles conferring adaptation to extreme environment (bacteriocins, ectoine, others). Notably, NRPs (20.6%) and bacteriocins (10.6%) were the most abundant. Furthermore, our metagenomic analysis predicted gene clusters that enable microbes to defend against a wide range of toxic metals, oxidative stress and osmotic stress. These findings suggest that Lake Afdera is a rich biological reservoir, with the predicted BGCs playing critical role in the survival and adaptation of extremophiles.
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Affiliation(s)
- Ermias Sissay Balcha
- School of Medical Laboratory Science, College of Health Sciences, Hawassa University, 16417, Hawassa, Ethiopia
- Biotechnology and Bioprocess Center of Excellence, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, 16417, Addis Ababa, Ethiopia
| | - Michael C Macey
- Astrobiology OU, School of Environment, Earth and Ecosystem Sciences, The Open University, Milton Keynes, MK7 6AA, United Kingdom
| | - Mesfin Tafesse Gemeda
- Biotechnology and Bioprocess Center of Excellence, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, 16417, Addis Ababa, Ethiopia
| | - Barbara Cavalazzi
- Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, Bologna, Italy
- Department of Geology, University of Johannesburg, Johannesburg, South Africa
| | - Adugna Abdi Woldesemayat
- Biotechnology and Bioprocess Center of Excellence, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, 16417, Addis Ababa, Ethiopia
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26
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Albert D, Zboralski A, Ciotola M, Cadieux M, Biessy A, Blom J, Beaulieu C, Filion M. Identification and genomic characterization of Pseudomonas spp. displaying biocontrol activity against Sclerotinia sclerotiorum in lettuce. Front Microbiol 2024; 15:1304682. [PMID: 38516010 PMCID: PMC10955138 DOI: 10.3389/fmicb.2024.1304682] [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: 09/29/2023] [Accepted: 02/16/2024] [Indexed: 03/23/2024] Open
Abstract
Lettuce is an economically major leafy vegetable that is affected by numerous diseases. One of the most devastating diseases of lettuce is white mold caused by Sclerotinia sclerotiorum. Control methods for this fungus are limited due to the development of genetic resistance to commonly used fungicides, the large number of hosts and the long-term survival of sclerotia in soil. To elaborate a new and more sustainable approach to contain this pathogen, 1,210 Pseudomonas strains previously isolated from agricultural soils in Canada were screened for their antagonistic activity against S. sclerotiorum. Nine Pseudomonas strains showed strong in vitro inhibition in dual-culture confrontational assays. Whole genome sequencing of these strains revealed their affiliation with four phylogenomic subgroups within the Pseudomonas fluorescens group, namely Pseudomonas corrugata, Pseudomonas asplenii, Pseudomonas mandelii, and Pseudomonas protegens. The antagonistic strains harbor several genes and gene clusters involved in the production of secondary metabolites, including mycin-type and peptin-type lipopeptides, and antibiotics such as brabantamide, which may be involved in the inhibitory activity observed against S. sclerotiorum. Three strains also demonstrated significant in planta biocontrol abilities against the pathogen when either inoculated on lettuce leaves or in the growing substrate of lettuce plants grown in pots. They however did not impact S. sclerotiorum populations in the rhizosphere, suggesting that they protect lettuce plants by altering the fitness and the virulence of the pathogen rather than by directly impeding its growth. These results mark a step forward in the development of biocontrol products against S. sclerotiorum.
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Affiliation(s)
- Daphné Albert
- Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, QC, Canada
- Department of Biology, Faculty of Science, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Antoine Zboralski
- Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, QC, Canada
| | - Marie Ciotola
- Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, QC, Canada
| | - Mélanie Cadieux
- Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, QC, Canada
| | - Adrien Biessy
- Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, QC, Canada
| | - Jochen Blom
- Bioinformatics and Systems Biology, Justus-Liebig-Universität Giessen, Giessen, Germany
| | - Carole Beaulieu
- Department of Biology, Faculty of Science, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Martin Filion
- Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, QC, Canada
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27
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Jagadeesan Y, Meenakshisundaram S, Pichaimuthu S, Balaiah A. A scientific version of understanding "Why did the chickens cross the road"? - A guided journey through Bacillus spp. towards sustainable agriculture, circular economy and biofortification. ENVIRONMENTAL RESEARCH 2024; 244:117907. [PMID: 38109965 DOI: 10.1016/j.envres.2023.117907] [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: 10/11/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/20/2023]
Abstract
The world, a famished planet with an overgrowing population, requires enormous food crops. This scenario compelled the farmers to use a high quantity of synthetic fertilizers for high food crop productivity. However, prolonged usage of chemical fertilizers results in severe adverse effects on soil and water quality. On the other hand, the growing population significantly consumes large quantities of poultry meats. Eventually, this produces a mammoth amount of poultry waste, chicken feathers. Owing to the protein value of the chicken feathers, these wastes are converted into protein hydrolysate and further extend their application as biostimulants for sustained agriculture. The protein profile of chicken feather protein hydrolysate (CFPH) produced through Bacillus spp. was the maximum compared to physical and chemical protein extraction methods. Several studies proved that the application of CFPH and active Bacillus spp. culture to soil and plants results in enhanced plant growth, phytochemical constituents, crop yield, soil nutrients, fertility, microbiome and resistance against diverse abiotic and biotic stresses. Overall, "CFPH - Jack of all trades" and "Bacillus spp. - an active camouflage to the surroundings where they applied showed profound and significant benefits to the plant growth under the most adverse conditions. In addition, Bacillus spp. coheres the biofortification process in plants through the breakdown of metals into metal ions that eventually increase the nutrient value of the food crops. However, detailed information on them is missing. This can be overcome by further real-world studies on rhizoengineering through a multi-omics approach and their interaction with plants. This review has explored the best possible and efficient strategy for managing chicken feather wastes into protein-rich CFPH through Bacillus spp. bioconversion and utilizing the CFPH and Bacillus spp. as biostimulants, biofertilizers, biopesticides and biofortificants. This paper is an excellent report on organic waste management, circular economy and sustainable agriculture research frontier.
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Affiliation(s)
- Yogeswaran Jagadeesan
- Department of Biotechnology, University College of Engineering, Anna University - BIT Campus, Tiruchirappalli, Tamilnadu, 620 024, India.
| | - Shanmugapriya Meenakshisundaram
- Department of Biotechnology, University College of Engineering, Anna University - BIT Campus, Tiruchirappalli, Tamilnadu, 620 024, India.
| | - Suthakaran Pichaimuthu
- Genprotic Biopharma Private Limited, SPIC Bioprocess Laboratory, Anna University, Taramani Campus, Taramani, Chennai, Tamilnadu, 600113, India.
| | - Anandaraj Balaiah
- Department of Biotechnology, University College of Engineering, Anna University - BIT Campus, Tiruchirappalli, Tamilnadu, 620 024, India.
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28
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Santos BLP, Vieira IMM, Ruzene DS, Silva DP. Unlocking the potential of biosurfactants: Production, applications, market challenges, and opportunities for agro-industrial waste valorization. ENVIRONMENTAL RESEARCH 2024; 244:117879. [PMID: 38086503 DOI: 10.1016/j.envres.2023.117879] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/19/2023]
Abstract
Biosurfactants are eco-friendly compounds with unique properties and promising potential as sustainable alternatives to chemical surfactants. The current review explores the multifaceted nature of biosurfactant production and applications, highlighting key fermentative parameters and microorganisms able to convert carbon-containing sources into biosurfactants. A spotlight is given on biosurfactants' obstacles in the global market, focusing on production costs and the challenges of large-scale synthesis. Innovative approaches to valorizing agro-industrial waste were discussed, documenting the utilization of lignocellulosic waste, food waste, oily waste, and agro-industrial wastewater in the segment. This strategy strongly contributes to large-scale, cost-effective, and environmentally friendly biosurfactant production, while the recent advances in waste valorization pave the way for a sustainable society.
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Affiliation(s)
| | | | - Denise Santos Ruzene
- Northeastern Biotechnology Network, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil; Center for Exact Sciences and Technology, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil; Graduate Program in Biotechnology, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil
| | - Daniel Pereira Silva
- Northeastern Biotechnology Network, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil; Center for Exact Sciences and Technology, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil; Graduate Program in Biotechnology, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil; Graduate Program in Intellectual Property Science, Federal University of Sergipe, 49100-000, São Cristóvão, SE, Brazil.
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29
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Zhou L, Höfte M, Hennessy RC. Does regulation hold the key to optimizing lipopeptide production in Pseudomonas for biotechnology? Front Bioeng Biotechnol 2024; 12:1363183. [PMID: 38476965 PMCID: PMC10928948 DOI: 10.3389/fbioe.2024.1363183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 02/12/2024] [Indexed: 03/14/2024] Open
Abstract
Lipopeptides (LPs) produced by Pseudomonas spp. are specialized metabolites with diverse structures and functions, including powerful biosurfactant and antimicrobial properties. Despite their enormous potential in environmental and industrial biotechnology, low yield and high production cost limit their practical use. While genome mining and functional genomics have identified a multitude of LP biosynthetic gene clusters, the regulatory mechanisms underlying their biosynthesis remain poorly understood. We propose that regulation holds the key to unlocking LP production in Pseudomonas for biotechnology. In this review, we summarize the structure and function of Pseudomonas-derived LPs and describe the molecular basis for their biosynthesis and regulation. We examine the global and specific regulator-driven mechanisms controlling LP synthesis including the influence of environmental signals. Understanding LP regulation is key to modulating production of these valuable compounds, both quantitatively and qualitatively, for industrial and environmental biotechnology.
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Affiliation(s)
- Lu Zhou
- Laboratory of Phytopathology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Monica Höfte
- Laboratory of Phytopathology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Rosanna C. Hennessy
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
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30
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Zhang X, Xin Y, Wang J, Dhanasekaran S, Yue Q, Feng F, Gu X, Li B, Zhao L, Zhang H. Characterization of a Bacillus velezensis strain as a potential biocontrol agent against soft rot of eggplant fruits. Int J Food Microbiol 2024; 410:110480. [PMID: 37977077 DOI: 10.1016/j.ijfoodmicro.2023.110480] [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: 07/03/2023] [Revised: 09/24/2023] [Accepted: 11/04/2023] [Indexed: 11/19/2023]
Abstract
Postharvest soft rot of eggplant fruits caused by Pectobacterium carotovorum is a bacterial disease with a high disease incidence and produces substantial economic losses. This study aimed to control postharvest soft rot of eggplant fruits by Bacillus velezensis and investigate the possible control mechanisms based on the effects of B. velezensis on P. carotovorum subsp. carotovorum (Pcc) and eggplant fruits, respectively. B. velezensis effectively controlled postharvest soft rot of eggplant fruits and directly inhibited Pcc growth in vitro. The volatile metabolites produced by B. velezensis showed no inhibition on Pcc. Whereas the cell-free filtrate of B. velezensis significantly inhibited the growth of Pcc in vitro and in vivo. Notably, methanol-soluble precipitates obtained from cell-free filtrate showed significant inhibition on Pcc, and the primary inhibitory substances were identified as surfactin isoforms. Besides, iturin and fengycin isoforms with much lower relative abundance were also detected in the methanol-soluble precipitates. Furthermore, B. velezensis enhanced the activities of reactive oxygen species (ROS) scavenging enzymes in eggplant fruits that alleviated ROS and oxidative damage; thereby, B. velezensis enhanced the fruits' disease resistance.
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Affiliation(s)
- Xiaoyun Zhang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Yu Xin
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Junyi Wang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Solairaj Dhanasekaran
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Qingrong Yue
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Faping Feng
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Xiangyu Gu
- School of Grain Science and Technology, Jiangsu University of Science and Technology, 2 Mengxi Road, Zhenjiang 212003, China
| | - Bo Li
- School of Grain Science and Technology, Jiangsu University of Science and Technology, 2 Mengxi Road, Zhenjiang 212003, China
| | - Lina Zhao
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Hongyin Zhang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China.
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31
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Park JY, Yu H, Charalampopoulos D, Park KM, Chang PS. Recent advances on erythorbyl fatty acid esters as multi-functional food emulsifiers. Food Chem 2024; 432:137242. [PMID: 37647709 DOI: 10.1016/j.foodchem.2023.137242] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/11/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023]
Abstract
Over the past few decades, food scientists have investigated a wide range of emulsifiers to manufacture stable and safe emulsion-based food products. More recently, the development of emulsifiers with multi-functionality, which is the ability to have more than two functions, has been considered as a promising strategy for resolving rancidification and microbial contamination in emulsions. Erythorbyl fatty acid esters (EFEs) synthesized by enzymatic esterification of hydrophilic erythorbic acid and hydrophobic fatty acid have been proposed as multi-functional emulsifiers since they simultaneously exhibit amphiphilic, antioxidative, and antibacterial properties in both aqueous and emulsion systems. This review provides current knowledge about EFEs in terms of enzymatic synthesis and multi-functionality. All processes for synthesizing and identifying EFEs are discussed. Each functionality of EFEs and the proposed mechanism are described with analytical methodologies and experimental details. It would provide valuable insights into the development and application of a multi-functional emulsifier in food emulsion chemistry.
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Affiliation(s)
- Jun-Young Park
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyunjong Yu
- Center for Agricultural Microorganism and Enzyme, Seoul National University, Seoul 08826, Republic of Korea; Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | | | - Kyung-Min Park
- Department of Food Science and Biotechnology, Wonkwang University, Iksan 54538, Republic of Korea.
| | - Pahn-Shick Chang
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Republic of Korea; Center for Agricultural Microorganism and Enzyme, Seoul National University, Seoul 08826, Republic of Korea; Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea; Center for Food and Bioconvergence, Seoul National University, Seoul 08826, Republic of Korea.
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Kang H, Chai A, Lin Z, Shi Y, Xie X, Li L, Fan T, Xiang S, Xie J, Li B. Deciphering Differences in Microbial Community Diversity between Clubroot-Diseased and Healthy Soils. Microorganisms 2024; 12:251. [PMID: 38399655 PMCID: PMC10893227 DOI: 10.3390/microorganisms12020251] [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: 12/26/2023] [Revised: 01/16/2024] [Accepted: 01/24/2024] [Indexed: 02/25/2024] Open
Abstract
Clubroot (Plasmodiophora brassicae) is an important soilborne disease that causes severe damage to cruciferous crops in China. This study aims to compare the differences in chemical properties and microbiomes between healthy and clubroot-diseased soils. To reveal the difference, we measured soil chemical properties and microbial communities by sequencing 18S and 16S rRNA amplicons. The available potassium in the diseased soils was higher than in the healthy soils. The fungal diversity in the healthy soils was significantly higher than in the diseased soils. Ascomycota and Proteobacteria were the most dominant fungal phylum and bacteria phylum in all soil samples, respectively. Plant-beneficial microorganisms, such as Chaetomium and Sphingomonas, were more abundant in the healthy soils than in the diseased soils. Co-occurrence network analysis found that the healthy soil networks were more complex and stable than the diseased soils. The link number, network density, and clustering coefficient of the healthy soil networks were higher than those of the diseased soil networks. Our results indicate that the microbial community diversity and network structure of the clubroot-diseased soils were different from those of the healthy soils. This study is of great significance in exploring the biological control strategies of clubroot disease.
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Affiliation(s)
- Huajun Kang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China;
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
| | - Ali Chai
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
| | - Zihan Lin
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
| | - Yanxia Shi
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
| | - Xuewen Xie
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
| | - Lei Li
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
| | - Tengfei Fan
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
| | - Sheng Xiang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
| | - Jianming Xie
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China;
| | - Baoju Li
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (A.C.); (Z.L.); (Y.S.); (X.X.); (L.L.); (T.F.); (S.X.)
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Rigolet A, Argüelles Arias A, Anckaert A, Quinton L, Rigali S, Tellatin D, Burguet P, Ongena M. Lipopeptides as rhizosphere public goods for microbial cooperation. Microbiol Spectr 2024; 12:e0310623. [PMID: 38047676 PMCID: PMC10783051 DOI: 10.1128/spectrum.03106-23] [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: 08/16/2023] [Accepted: 11/06/2023] [Indexed: 12/05/2023] Open
Abstract
IMPORTANCE Here, we provide new insights into the possible fate of cyclic lipopeptides as prominent specialized metabolites from beneficial bacilli and pseudomonads once released in the soil. Our data illustrate how the B. velezensis lipopeptidome may be enzymatically remodeled by Streptomyces as important members of the soil bacterial community. The enzymatic arsenal of S. venezuelae enables an unsuspected extensive degradation of these compounds, allowing the bacterium to feed on these exogenous products via a mechanism going beyond linearization, which was previously reported as a detoxification strategy. As soils are carbon-rich and nitrogen-poor environments, we propose a new role for cyclic lipopeptides in interspecies interactions, which is to fuel the nitrogen metabolism of a part of the rhizosphere microbial community. Streptomyces and other actinomycetes, producing numerous peptidases and displaying several traits of beneficial bacteria, should be at the front line to directly benefit from these metabolites as "public goods" for microbial cooperation.
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Affiliation(s)
- Augustin Rigolet
- Microbial Processes and Interactions laboratory, TERRA teaching and research centre, Gembloux Agro-Bio Tech,University of Liège, Gembloux, Belgium
| | - Anthony Argüelles Arias
- Microbial Processes and Interactions laboratory, TERRA teaching and research centre, Gembloux Agro-Bio Tech,University of Liège, Gembloux, Belgium
| | - Adrien Anckaert
- Microbial Processes and Interactions laboratory, TERRA teaching and research centre, Gembloux Agro-Bio Tech,University of Liège, Gembloux, Belgium
| | - Loïc Quinton
- Department of Chemistry, University of Liège, Liège, Belgium
| | - Sébastien Rigali
- InBioS—Centre for Protein Engineering,University of Liège, Liege, Belgium
- Hedera-22, Liege, Belgium
| | - Deborah Tellatin
- InBioS—Centre for Protein Engineering,University of Liège, Liege, Belgium
| | - Pierre Burguet
- Department of Chemistry, University of Liège, Liège, Belgium
| | - Marc Ongena
- Microbial Processes and Interactions laboratory, TERRA teaching and research centre, Gembloux Agro-Bio Tech,University of Liège, Gembloux, Belgium
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Hansen ML, Dénes Z, Jarmusch SA, Wibowo M, Lozano-Andrade CN, Kovács ÁT, Strube ML, Andersen AJC, Jelsbak L. Resistance towards and biotransformation of a Pseudomonas-produced secondary metabolite during community invasion. THE ISME JOURNAL 2024; 18:wrae105. [PMID: 38874164 PMCID: PMC11203913 DOI: 10.1093/ismejo/wrae105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 05/24/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024]
Abstract
The role of antagonistic secondary metabolites produced by Pseudomonas protegens in suppression of soil-borne phytopathogens has been clearly documented. However, their contribution to the ability of P. protegens to establish in soil and rhizosphere microbiomes remains less clear. Here, we use a four-species synthetic community (SynCom) in which individual members are sensitive towards key P. protegens antimicrobial metabolites (DAPG, pyoluteorin, and orfamide A) to determine how antibiotic production contributes to P. protegens community invasion and to identify community traits that counteract the antimicrobial effects. We show that P. protegens readily invades and alters the SynCom composition over time, and that P. protegens establishment requires production of DAPG and pyoluteorin. An orfamide A-deficient mutant of P. protegens invades the community as efficiently as wildtype, and both cause similar perturbations to community composition. Here, we identify the microbial interactions underlying the absence of an orfamide A mediated impact on the otherwise antibiotic-sensitive SynCom member, and show that the cyclic lipopeptide is inactivated and degraded by the combined action of Rhodococcus globerulus D757 and Stenotrophomonas indicatrix D763. Altogether, the demonstration that the synthetic community constrains P. protegens invasion by detoxifying its antibiotics may provide a mechanistic explanation to inconsistencies in biocontrol effectiveness in situ.
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Affiliation(s)
- Morten L Hansen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
| | - Zsófia Dénes
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
| | - Scott A Jarmusch
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
| | - Mario Wibowo
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
| | - Carlos N Lozano-Andrade
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
| | - Ákos T Kovács
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
| | - Mikael L Strube
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
| | - Aaron J C Andersen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
| | - Lars Jelsbak
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads bldg. 221, DK-2800 Kgs Lyngby, Denmark
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Chen HW, Yu YH. Effects of cyclic antimicrobial lipopeptides from Bacillus subtilis on growth performance, intestinal morphology, and cecal gene expression and microbiota community in broilers. Anim Sci J 2024; 95:e13971. [PMID: 38899765 DOI: 10.1111/asj.13971] [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: 03/08/2024] [Revised: 05/09/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024]
Abstract
This study investigated the effects of cyclic antimicrobial lipopeptides (CLPs) from Bacillus subtilis on the growth performance, gut morphology, and cecal gene expression and microbiota in broilers; 120 1-day-old unsexed Arbor Acres chicks were randomly divided into four groups, with six replicates in each group and five broilers per cage. These groups were fed a basal diet (C), basal diet plus 10-mg enramycin/kg (E), and basal diet plus 51-mg CLPs/kg (L) or 102-mg CLPs/kg (H). The results indicated that CLP supplementation linearly increased the body weight compared with the C group at 35 days of age. Between 15 and 35 days and 1 and 35 days of age, CLP supplementation linearly increased the average daily gain compared with the C group. The duodenal villus height was significantly increased in the H group compared with the C and E groups. In the cecum, CLP supplementation linearly increased SOD and ZO-1 mRNA expression compared with the C group. β diversity of microbiota indicated distinct clusters between the groups. CLP supplementation linearly increased the abundance of the genus Lactobacillus in the cecal digesta compared with the C group. These results demonstrate that B. subtilis-produced CLPs dose-dependently increase broilers' growth performance, improve their gut morphology, and modulate their gut microbiota.
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Affiliation(s)
- Hsiu-Wei Chen
- Department of Biotechnology and Animal Science, National Ilan University, Yilan City, Taiwan
| | - Yu-Hsiang Yu
- Department of Biotechnology and Animal Science, National Ilan University, Yilan City, Taiwan
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Dehbi I, Achemrk O, Ezzouggari R, El Jarroudi M, Mokrini F, Legrifi I, Belabess Z, Laasli SE, Mazouz H, Lahlali R. Beneficial Microorganisms as Bioprotectants against Foliar Diseases of Cereals: A Review. PLANTS (BASEL, SWITZERLAND) 2023; 12:4162. [PMID: 38140489 PMCID: PMC10747484 DOI: 10.3390/plants12244162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023]
Abstract
Cereal production plays a major role in both animal and human diets throughout the world. However, cereal crops are vulnerable to attacks by fungal pathogens on the foliage, disrupting their biological cycle and photosynthesis, which can reduce yields by 15-20% or even 60%. Consumers are concerned about the excessive use of synthetic pesticides given their harmful effects on human health and the environment. As a result, the search for alternative solutions to protect crops has attracted the interest of scientists around the world. Among these solutions, biological control using beneficial microorganisms has taken on considerable importance, and several biological control agents (BCAs) have been studied, including species belonging to the genera Bacillus, Pseudomonas, Streptomyces, Trichoderma, Cladosporium, and Epicoccum, most of which include plants of growth-promoting rhizobacteria (PGPRs). Bacillus has proved to be a broad-spectrum agent against these leaf cereal diseases. Interaction between plant and beneficial agents occurs as direct mycoparasitism or hyperparasitism by a mixed pathway via the secretion of lytic enzymes, growth enzymes, and antibiotics, or by an indirect interaction involving competition for nutrients or space and the induction of host resistance (systemic acquired resistance (SAR) or induced systemic resistance (ISR) pathway). We mainly demonstrate the role of BCAs in the defense against fungal diseases of cereal leaves. To enhance a solution-based crop protection approach, it is also important to understand the mechanism of action of BCAs/molecules/plants. Research in the field of preventing cereal diseases is still ongoing.
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Affiliation(s)
- Ilham Dehbi
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
- Laboratory of Plant Biotechnology and Molecular Biology, Faculty of Sciences, Moulay Ismail University, BP 11201, Zitoune, Meknes 50000, Morocco;
| | - Oussama Achemrk
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
| | - Rachid Ezzouggari
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
- Laboratory of Biotechnology, Conservation, and Valorization of Natural Resources (LBCVNR), Faculty of Sciences Dhar El Mehraz, Sidi Mohamed Ben Abdallah University, Fez 30000, Morocco
| | - Moussa El Jarroudi
- Department of Environmental Sciences and Management, SPHERES Research Unit, University of Liège, 6700 Arlon, Belgium;
| | - Fouad Mokrini
- Biotechnology Unit, Regional Center of Agricultural Research, INRA–Morocco, Rabat 10080, Morocco;
| | - Ikram Legrifi
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
| | - Zineb Belabess
- Plant Protection Laboratory, Regional Center of Agricultural Research of Meknes, National Institute of Agricultural Research, Km 13, Route Haj Kaddour, BP 578, Meknes 50001, Morocco;
| | - Salah-Eddine Laasli
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
| | - Hamid Mazouz
- Laboratory of Plant Biotechnology and Molecular Biology, Faculty of Sciences, Moulay Ismail University, BP 11201, Zitoune, Meknes 50000, Morocco;
| | - Rachid Lahlali
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
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Yu C, Qiao J, Ali Q, Jiang Q, Song Y, Zhu L, Gu Q, Borriss R, Dong S, Gao X, Wu H. degQ associated with the degS/degU two-component system regulates biofilm formation, antimicrobial metabolite production, and biocontrol activity in Bacillus velezensis DMW1. MOLECULAR PLANT PATHOLOGY 2023; 24:1510-1521. [PMID: 37731193 PMCID: PMC10632791 DOI: 10.1111/mpp.13389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/13/2023] [Accepted: 09/05/2023] [Indexed: 09/22/2023]
Abstract
The gram-positive bacterium Bacillus velezensis strain DMW1 produces a high level of antimicrobial metabolites that can suppress the growth of phytopathogens. We investigated the mechanism used by degQ and the degS/degU two-component system to regulate the biocontrol characteristics of DMW1. When degQ and degU were deleted, the biofilm formation, cell motility, colonization activities, and antifungal abilities of ΔdegQ and ΔdegU were significantly reduced compared to wild-type DMW1. The expression levels of biofilm-related genes (epsA, epsB, epsC, and tasA) and swarming-related genes (swrA and swrB) were all down-regulated. We also evaluated the impact on secondary metabolites of these two genes. The degQ and degU genes reduced surfactin and macrolactin production and up-regulated the production of fengycin, iturin, bacillaene, and difficidin metabolites. The reverse transcription-quantitative PCR results were consistent with these observations. Electrophoretic mobility shift assay and microscale thermophoresis revealed that DegU can bind to the promoter regions of these six antimicrobial metabolite genes and regulate their synthesis. In conclusion, we provided systematic evidence to demonstrate that the degQ and degU genes are important regulators of multicellular behaviour and antimicrobial metabolic processes in B. velezensis DMW1 and suggested novel amenable strains to be used for the industrial production of antimicrobial metabolites.
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Affiliation(s)
- Chenjie Yu
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
| | - Junqing Qiao
- Jiangsu Academy of Agricultural SciencesInstitute of Plant ProtectionNanjingChina
| | - Qurban Ali
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
| | - Qifan Jiang
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
| | - Yan Song
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
| | - Linli Zhu
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
| | - Qin Gu
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
| | - Rainer Borriss
- Institut für BiologieHumboldt University BerlinBerlinGermany
| | - Suomeng Dong
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
| | - Xuewen Gao
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
| | - Huijun Wu
- College of Plant Protection, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Sanya Institute of Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjingChina
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Ribeiro R, Costa L, Pinto E, Sousa E, Fernandes C. Therapeutic Potential of Marine-Derived Cyclic Peptides as Antiparasitic Agents. Mar Drugs 2023; 21:609. [PMID: 38132930 PMCID: PMC10745025 DOI: 10.3390/md21120609] [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: 11/02/2023] [Revised: 11/18/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Parasitic diseases still compromise human health. Some of the currently available therapeutic drugs have limitations considering their adverse effects, questionable efficacy, and long treatment, which have encouraged drug resistance. There is an urgent need to find new, safe, effective, and affordable antiparasitic drugs. Marine-derived cyclic peptides have been increasingly screened as candidates for developing new drugs. Therefore, in this review, a systematic analysis of the scientific literature was performed and 25 marine-derived cyclic peptides with antiparasitic activity (1-25) were found. Antimalarial activity is the most reported (51%), followed by antileishmanial (27%) and antitrypanosomal (20%) activities. Some compounds showed promising antiparasitic activity at the nM scale, being active against various parasites. The mechanisms of action and targets for some of the compounds have been investigated, revealing different strategies against parasites.
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Affiliation(s)
- Ricardo Ribeiro
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (R.R.); (L.C.); (E.S.)
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal;
| | - Lia Costa
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (R.R.); (L.C.); (E.S.)
| | - Eugénia Pinto
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal;
- Laboratório de Microbiologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Emília Sousa
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (R.R.); (L.C.); (E.S.)
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal;
| | - Carla Fernandes
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (R.R.); (L.C.); (E.S.)
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal;
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Qais FA, Parveen N, Ahmad I, Husain FM, Khan A, Adil M. Multi-targeting of virulence factors of P. aeruginosa by β-lactam antibiotics to combat antimicrobial resistance. J Biomol Struct Dyn 2023:1-19. [PMID: 37904338 DOI: 10.1080/07391102.2023.2275181] [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: 09/11/2023] [Accepted: 10/20/2023] [Indexed: 11/01/2023]
Abstract
Antimicrobial resistance poses a significant challenge to public health, especially in developing countries, due to a substantial rise in bacterial resistance. This situation has become so concerning that we are now at risk of losing the effectiveness of antibiotics altogether. Recent research has firmly established that bacteria engage in a process called quorum sensing (QS). QS regulates various functions, including nutrient scavenging, immune response suppression, increased virulence, biofilm formation and mobility. Pseudomonas aeruginosa, an opportunistic bacterial pathogen, plays a significant role in various medical conditions such as chronic wounds, corneal infections, burn wounds and cystic fibrosis. While antibiotics are effective in killing bacteria, only a few antibiotics, particularly those from the β-lactam group, have been studied for their impact on the quorum sensing of P. aeruginosa. Given the lack of concentrated efforts in this area, we have investigated the role of β-lactam antibiotics on various potential targets of P. aeruginosa. Based on their toxicological profiles and the average binding energy obtained through molecular docking, azlocillin and moxalactam have emerged as lead antibiotics. The binding energy for the docking of azlocillin and moxalactam with LasA was determined to be -8.2 and -8.6 kcal/mol, respectively. Molecular simulation analysis has confirmed the stable interaction of both these ligands with all three target proteins (LasI, LasA and PqsR) under physiological conditions. The results of this research underscore the effectiveness of azlocillin and moxalactam. These two antibiotics may be repurposed to target the quorum sensing of P. aeruginosa.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Faizan Abul Qais
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, UP, India
| | - Nagma Parveen
- Department of Zoology, Saifia College, Barkatullah University, Bhopal, India
| | - Iqbal Ahmad
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, UP, India
| | | | - Altaf Khan
- Department of Pharmacology, College of Pharmacy, King Saud University, Riyadh, KSA
| | - Mohd Adil
- Department of Environmental Sciences, Dalhousie University, Truro, NS, Canada
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40
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Ravi A, Das S, Sebastian SK, Aravindakumar CT, Mathew J, Krishnankutty RE. Bioactive Metabolites of Serratia sp. NhPB1 Isolated from Pitcher of Nepenthes and its Application to Control Pythium aphanidermatum. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10154-7. [PMID: 37872287 DOI: 10.1007/s12602-023-10154-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2023] [Indexed: 10/25/2023]
Abstract
Plant-associated bacteria have already been considered as the store house of bioactive compounds that confer the plant growth promotion and disease protection. Hence, the unique plant parts have already been expected to harbor diverse microbial communities with multi-beneficial properties. Based on this, the current study has been designed to identify the potential of Serratia sp. NhPB1 isolated from the pitcher of Nepenthes plant for its activity against the infamous pathogen Pythium aphanidermatum. The in vitro antifungal, plant growth promoting and enzymatic activities of the isolate indicated its promises for agricultural application. The isolate NhPB1 was also demonstrated to have positive effect on Solanum lycopersicum and Capsicum annuum, due to its plant beneficial metabolites. From the results of LC-MS/MS analysis, the isolate has also been revealed to have the ability to synthesize bioactive compounds including salicylic acid, cyclodipeptides, acyl homoserine lactone, indole-3-acetic acid, and serrawettin W1. These identified compounds and their known biological properties make the isolate characterized in the study to have significant promises as an eco-friendly solution for the improvement of agricultural productivity.
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Affiliation(s)
- Aswani Ravi
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, 686560, India
| | - Soumya Das
- Department of Zoology, KE College, Mannanam, Kottayam, 686561, India
| | | | - Charuvila T Aravindakumar
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam, Kerala, 686560, India
- Inter University Instrumentation Centre, Mahatma Gandhi University, Kottayam, Kerala, 686560, India
| | - Jyothis Mathew
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, 686560, India
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41
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Wang W, Gu L, Wang J, Hu X, Wei B, Zhang H, Wang H, Chen J. Recent Advances in Polypeptide Antibiotics Derived from Marine Microorganisms. Mar Drugs 2023; 21:547. [PMID: 37888482 PMCID: PMC10608164 DOI: 10.3390/md21100547] [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: 09/19/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/28/2023] Open
Abstract
In the post-antibiotic era, the rapid development of antibiotic resistance and the shortage of available antibiotics are triggering a new health-care crisis. The discovery of novel and potent antibiotics to extend the antibiotic pipeline is urgent. Small-molecule antimicrobial peptides have a wide variety of antimicrobial spectra and multiple innovative antimicrobial mechanisms due to their rich structural diversity. Consequently, they have become a new research hotspot and are considered to be promising candidates for next-generation antibiotics. Therefore, we have compiled a collection of small-molecule antimicrobial peptides derived from marine microorganisms from the last fifteen years to show the recent advances in this field. We categorize these compounds into three classes-cyclic oligopeptides, cyclic depsipeptides, and cyclic lipopeptides-according to their structural features, and present their sources, structures, and antimicrobial spectrums, with a discussion of the structure activity relationships and mechanisms of action of some compounds.
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Affiliation(s)
| | | | | | | | | | | | - Hong Wang
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education & Key Laboratory Pharmaceutical Engineering of Zhejiang Province & College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jianwei Chen
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education & Key Laboratory Pharmaceutical Engineering of Zhejiang Province & College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China
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42
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Chen H, Zhong L, Zhou H, Bai X, Sun T, Wang X, Zhao Y, Ji X, Tu Q, Zhang Y, Bian X. Biosynthesis and engineering of the nonribosomal peptides with a C-terminal putrescine. Nat Commun 2023; 14:6619. [PMID: 37857663 PMCID: PMC10587159 DOI: 10.1038/s41467-023-42387-z] [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: 01/05/2023] [Accepted: 10/09/2023] [Indexed: 10/21/2023] Open
Abstract
The broad bioactivities of nonribosomal peptides rely on increasing structural diversity. Genome mining of the Burkholderiales strain Schlegelella brevitalea DSM 7029 leads to the identification of a class of dodecapeptides, glidonins, that feature diverse N-terminal modifications and a uniform putrescine moiety at the C-terminus. The N-terminal diversity originates from the wide substrate selectivity of the initiation module. The C-terminal putrescine moiety is introduced by the unusual termination module 13, the condensation domain directly catalyzes the assembly of putrescine into the peptidyl backbone, and other domains are essential for stabilizing the protein structure. Swapping of this module to another two nonribosomal peptide synthetases leads to the addition of a putrescine to the C-terminus of related nonribosomal peptides, improving their hydrophilicity and bioactivity. This study elucidates the mechanism for putrescine addition and provides further insights to generate diverse and improved nonribosomal peptides by introducing a C-terminal putrescine.
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Affiliation(s)
- Hanna Chen
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China
- School of Medicine, Linyi University, Shuangling Road, 276000, Linyi, China
| | - Lin Zhong
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, China
| | - Haibo Zhou
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China
| | - Xianping Bai
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China
| | - Tao Sun
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China
| | - Xingyan Wang
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China
| | - Yiming Zhao
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China
| | - Xiaoqi Ji
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China
| | - Qiang Tu
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, China
| | - Youming Zhang
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, China
| | - Xiaoying Bian
- Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, 266237, Qingdao, Shandong, China.
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Lozano-Andrade CN, Nogueira CG, Henriksen NNSE, Wibowo M, Jarmusch SA, Kovács ÁT. Establishment of a transparent soil system to study Bacillus subtilis chemical ecology. ISME COMMUNICATIONS 2023; 3:110. [PMID: 37838789 PMCID: PMC10576751 DOI: 10.1038/s43705-023-00318-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/21/2023] [Accepted: 10/05/2023] [Indexed: 10/16/2023]
Abstract
Bacterial secondary metabolites are structurally diverse molecules that drive microbial interaction by altering growth, cell differentiation, and signaling. Bacillus subtilis, a Gram-positive soil-dwelling bacterium, produces a wealth of secondary metabolites, among them, lipopeptides have been vastly studied by their antimicrobial, antitumor, and surfactant activities. However, the natural functions of secondary metabolites in the lifestyles of the producing organism remain less explored under natural conditions, i.e. in soil. Here, we describe a hydrogel-based transparent soil system to investigate B. subtilis chemical ecology under controllable soil-like conditions. The transparent soil matrix allows the growth of B. subtilis and other isolates gnotobiotically and under nutrient-controlled conditions. Additionally, we show that transparent soil allows the detection of lipopeptides production and dynamics by HPLC-MS, and MALDI-MS imaging, along with fluorescence imaging of 3-dimensional bacterial assemblages. We anticipate that this affordable and highly controllable system will promote bacterial chemical ecology research and help to elucidate microbial interactions driven by secondary metabolites.
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Affiliation(s)
| | - Carla G Nogueira
- DTU Bioengineering, Technical University of Denmark, 2800, Kgs Lyngby, Denmark
| | | | - Mario Wibowo
- DTU Bioengineering, Technical University of Denmark, 2800, Kgs Lyngby, Denmark
| | - Scott A Jarmusch
- DTU Bioengineering, Technical University of Denmark, 2800, Kgs Lyngby, Denmark
| | - Ákos T Kovács
- DTU Bioengineering, Technical University of Denmark, 2800, Kgs Lyngby, Denmark.
- Institute of Biology, Leiden University, 2333 BE, Leiden, The Netherlands.
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Pengproh R, Thanyasiriwat T, Sangdee K, Saengprajak J, Kawicha P, Sangdee A. Evaluation and Genome Mining of Bacillus stercoris Isolate B.PNR1 as Potential Agent for Fusarium Wilt Control and Growth Promotion of Tomato. THE PLANT PATHOLOGY JOURNAL 2023; 39:430-448. [PMID: 37817491 PMCID: PMC10580056 DOI: 10.5423/ppj.oa.01.2023.0018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 08/07/2023] [Accepted: 08/26/2023] [Indexed: 10/12/2023]
Abstract
Recently, strategies for controlling Fusarium oxysporum f. sp. lycopersici (Fol), the causal agent of Fusarium wilt of tomato, focus on using effective biocontrol agents. In this study, an analysis of the biocontrol and plant growth promoting (PGP) attributes of 11 isolates of loamy soil Bacillus spp. has been conducted. Among them, the isolates B.PNR1 and B.PNR2 inhibited the mycelial growth of Fol by inducing abnormal fungal cell wall structures and cell wall collapse. Moreover, broad-spectrum activity against four other plant pathogenic fungi, F. oxysporum f. sp. cubense race 1 (Foc), Sclerotium rolfsii, Colletotrichum musae, and C. gloeosporioides were noted for these isolates. These two Bacillus isolates produced indole acetic acid, phosphate solubilization enzymes, and amylolytic and cellulolytic enzymes. In the pot experiment, the culture filtrate from B.PNR1 showed greater inhibition of the fungal pathogens and significantly promoted the growth of tomato plants more than those of the other treatments. Isolate B.PNR1, the best biocontrol and PGP, was identified as Bacillus stercoris by its 16S rRNA gene sequence and whole genome sequencing analysis (WGS). The WGS, through genome mining, confirmed that the B.PNR1 genome contained genes/gene cluster of a nonribosomal peptide synthetase/polyketide synthase, such as fengycin, surfactin, bacillaene, subtilosin A, bacilysin, and bacillibactin, which are involved in antagonistic and PGP activities. Therefore, our finding demonstrates the effectiveness of B. stercoris strain B.PNR1 as an antagonist and for plant growth promotion, highlighting the use of this microorganism as a biocontrol agent against the Fusarium wilt pathogen and PGP abilities in tomatoes.
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Affiliation(s)
- Rattana Pengproh
- Department of Biology, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
| | - Thanwanit Thanyasiriwat
- Plant Genome and Disease Research Unit, Department of Agriculture and Resources, Faculty of Natural Resources and Agro-Industry, Kasetsart University Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon 47000, Thailand
| | - Kusavadee Sangdee
- Preclinical Group, Faculty of Medicine, Mahasarakham University, Muang District, Maha Sarakham 44000, Thailand
| | - Juthaporn Saengprajak
- Department of Biology, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
| | - Praphat Kawicha
- Plant Genome and Disease Research Unit, Department of Agriculture and Resources, Faculty of Natural Resources and Agro-Industry, Kasetsart University Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon 47000, Thailand
| | - Aphidech Sangdee
- Department of Biology, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
- Microbiology and Applied Microbiology Research Unit, Faculty of Science, Mahasarakham University, Kantarawichai District, Maha Sarakham 44150, Thailand
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Vicente-Garcia C, Colomer I. Lipopeptides as tools in catalysis, supramolecular, materials and medicinal chemistry. Nat Rev Chem 2023; 7:710-731. [PMID: 37726383 DOI: 10.1038/s41570-023-00532-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2023] [Indexed: 09/21/2023]
Abstract
Lipopeptides are amphiphilic peptides in which an aliphatic chain is attached to either the C or N terminus of peptides. Their self-assembly - into micelles, vesicles, nanotubes, fibres or nanobelts - leads to applications in nanotechnology, catalysis or medicinal chemistry. Self-organization of lipopeptides is dependent on both the length of the lipid tail and the amino acid sequence, in which the chirality of the peptide sequence can be transmitted into the supramolecular species. This Review describes the use of lipopeptides to design synthetic advanced dynamic supramolecular systems, nanostructured materials or self-responsive delivery systems in the area of medical biotechnology. We examine the influence of external stimuli, the ability of lipopeptide-derived structures to adapt over time and their application as medicinal agents with antibacterial, antifungal, antiviral or anticancer activities. Finally, we discuss the catalytic efficiency of lipopeptides, with the aim of building minimal synthetic enzymes, and recent efforts to incorporate metals into lipopeptide assemblies.
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Affiliation(s)
| | - Ignacio Colomer
- IMDEA-Nanociencia, Madrid, Spain.
- Instituto de Química Orgánica General (IQOG-CSIC), Madrid, Spain.
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Feng Y, Zhang Y, Shah OU, Luo K, Chen Y. Isolation and Identification of Endophytic Bacteria Bacillus sp. ME9 That Exhibits Biocontrol Activity against Xanthomonas phaseoli pv. manihotis. BIOLOGY 2023; 12:1231. [PMID: 37759630 PMCID: PMC10525512 DOI: 10.3390/biology12091231] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023]
Abstract
In recent years, the bacterial blight of cassava has caused substantial economic losses to the Chinese cassava industry. Chemical control methods have become the primary approach to control this disease; however, their widespread usage and harmful residues have raised concerns about environmental pollution. In order to avoid this, it is urgent to seek a green ecological method to prevent and control it. Biological control through the utilization of microorganisms not only effectively inhibits the disease, but also gives consideration to environmental friendliness. Therefore, investigating an endophytic biological control method for cassava bacterial blight is of great importance. In this study, cassava leaf tissues were used as test specimens in order to isolate endophytic bacteria by using dilution and separation methods. Bacillus ME9, derived from cassava endophytic bacteria, exhibits good antagonism against a diverse range of pathogens, including Xpm11. Its genome consists of a series of genes encoding antibacterial lipopeptides, which may be directly related to its antibacterial capabilities. Furthermore, inoculation resulted in a substantial change in the diversity of the endophytic bacterial community, characterized by improved diversity, and displayed an obvious inhibition of pathogenic bacterial growth, demonstrating successful colonization within plants. The results laid a foundation and provided theoretical support for the development and utilization of cassava endophytic bacterial diversity and endogenous disease control strategies.
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Affiliation(s)
- Yating Feng
- Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China (O.U.S.)
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yijie Zhang
- Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China (O.U.S.)
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Obaid Ullah Shah
- Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China (O.U.S.)
- Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, School of Tropical Crops, Hainan University, Haikou 570228, China
| | - Kai Luo
- Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China (O.U.S.)
| | - Yinhua Chen
- Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China (O.U.S.)
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
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Chang PE, Wu YH, Tai CY, Lin IH, Wang WD, Tseng TS, Chuang HW. Examining the Transcriptomic and Biochemical Signatures of Bacillus subtilis Strains: Impacts on Plant Growth and Abiotic Stress Tolerance. Int J Mol Sci 2023; 24:13720. [PMID: 37762026 PMCID: PMC10531026 DOI: 10.3390/ijms241813720] [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: 08/10/2023] [Revised: 09/03/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Rhizobacteria from various ecological niches display variations in physiological characteristics. This study investigates the transcriptome profiling of two Bacillus subtilis strains, BsCP1 and BsPG1, each isolated from distinct environments. Gene expression linked to the synthesis of seven types of antibiotic compounds was detected in both BsCP1 and BsPG1 cultures. Among these, the genes associated with plipastatin synthesis were predominantly expressed in both bacterial strains. However, genes responsible for the synthesis of polyketide, subtilosin, and surfactin showed distinct transcriptional patterns. Additionally, genes involved in producing exopolysaccharides (EPS) showed higher expression levels in BsPG1 than in BsCP1. Consistently with this, a greater quantity of EPS was found in the BsPG1 culture compared to BsCP1. Both bacterial strains exhibited similar effects on Arabidopsis seedlings, promoting root branching and increasing seedling fresh weight. However, BsPG1 was a more potent enhancer of drought, heat, and copper stress tolerance than BsCP1. Treatment with BsPG1 had a greater impact on improving survival rates, increasing starch accumulation, and stabilizing chlorophyll content during the post-stress stage. qPCR analysis was used to measure transcriptional changes in Arabidopsis seedlings in response to BsCP1 and BsPG1 treatment. The results show that both bacterial strains had a similar impact on the expression of genes involved in the salicylic acid (SA) and jasmonic acid (JA) signaling pathways. Likewise, genes associated with stress response, root development, and disease resistance showed comparable responses to both bacterial strains. However, treatment with BsCP1 and BsPG1 induced distinct activation of genes associated with the ABA signaling pathway. The results of this study demonstrate that bacterial strains from different ecological environments have varying abilities to produce beneficial metabolites for plant growth. Apart from the SA and JA signaling pathways, ABA signaling triggered by PGPR bacterial strains could play a crucial role in building an effective resistance to various abiotic stresses in the plants they colonize.
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Affiliation(s)
| | | | | | | | | | - Tong-Seung Tseng
- Department of Agricultural Biotechnology, National Chiayi University, Chiayi 600355, Taiwan (C.-Y.T.); (I.-H.L.)
| | - Huey-wen Chuang
- Department of Agricultural Biotechnology, National Chiayi University, Chiayi 600355, Taiwan (C.-Y.T.); (I.-H.L.)
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Abstract
Plant disease control requires novel approaches to mitigate the spread of and losses caused by current, emerging, and re-emerging diseases and to adapt plant protection to global climate change and the restrictions on the use of conventional pesticides. Currently, disease management relies mainly on biopesticides, which are required for the sustainable use of plant-protection products. Functional peptides are candidate biopesticides because they originate from living organisms or are synthetic analogs and provide novel mechanisms of action against plant pathogens. Hundreds of compounds exist that cover an extensive range of activities against viruses, bacteria and phytoplasmas, fungi and oomycetes, and nematodes. Natural sources, chemical synthesis, and biotechnological platforms may provide peptides at large scale for the industry and growers. The main challenges for their use in plant disease protection are (a) the requirement of stability in the plant environment and counteracting resistance in pathogen populations, (b) the need to develop suitable formulations to increase their shelf life and methods of application, (c) the selection of compounds with acceptable toxicological profiles, and (d) the high cost of production for agricultural purposes. In the near future, it is expected that several functional peptides will be commercially available for plant disease control, but more effort is needed to validate their efficacy at the field level and fulfill the requirements of the regulatory framework.
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Affiliation(s)
- Emilio Montesinos
- Institute of Food and Agricultural Technology, Plant Pathology-CIDSAV, University of Girona, Girona, Spain;
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Tsumori C, Matsuo S, Murai Y, Kai K. Quorum Sensing-Dependent Invasion of Ralstonia solanacearum into Fusarium oxysporum Chlamydospores. Microbiol Spectr 2023; 11:e0003623. [PMID: 37367297 PMCID: PMC10433826 DOI: 10.1128/spectrum.00036-23] [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: 01/03/2023] [Accepted: 06/02/2023] [Indexed: 06/28/2023] Open
Abstract
Strains of the Ralstonia solanacearum species complex (RSSC), although known as the causative agent of bacterial wilt disease in plants, induce the chlamydospores of many fungal species and invade them through the spores. The lipopeptide ralstonins are the chlamydospore inducers produced by RSSC and are essential for this invasion. However, no mechanistic investigation of this interaction has been conducted. In this study, we report that quorum sensing (QS), which is a bacterial cell-cell communication, is important for RSSC to invade the fungus Fusarium oxysporum (Fo). ΔphcB, a deletion mutant of QS signal synthase, lost the ability to both produce ralstonins and invade Fo chlamydospores. The QS signal methyl 3-hydroxymyristate rescued these disabilities. In contrast, exogenous ralstonin A, while inducing Fo chlamydospores, failed to rescue the invasive ability. Gene-deletion and -complementation experiments revealed that the QS-dependent production of extracellular polysaccharide I (EPS I) is essential for this invasion. The RSSC cells adhered to Fo hyphae and formed biofilms there before inducing chlamydospores. This biofilm formation was not observed in the EPS I- or ralstonin-deficient mutant. Microscopic analysis showed that RSSC infection resulted in the death of Fo chlamydospores. Altogether, we report that the RSSC QS system is important for this lethal endoparasitism. Among the factors regulated by the QS system, ralstonins, EPS I, and biofilm are important parasitic factors. IMPORTANCE Ralstonia solanacearum species complex (RSSC) strains infect both plants and fungi. The phc quorum-sensing (QS) system of RSSC is important for parasitism on plants, because it allows them to invade and proliferate within the hosts by causing appropriate activation of the system at each infection step. In this study, we confirm that ralstonin A is important not only for Fusarium oxysporum (Fo) chlamydospore induction but also for RSSC biofilm formation on Fo hyphae. Extracellular polysaccharide I (EPS I) is also essential for biofilm formation, while the phc QS system controls these factors in terms of production. The present results advocate a new QS-dependent mechanism for the process by which a bacterium invades a fungus.
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Affiliation(s)
- Chiaki Tsumori
- Graduate School of Agriculture, Osaka Metropolitan University, Osaka, Japan
| | - Shoma Matsuo
- Graduate School of Agriculture, Osaka Metropolitan University, Osaka, Japan
| | - Yuta Murai
- Graduate School of Agriculture, Osaka Metropolitan University, Osaka, Japan
| | - Kenji Kai
- Graduate School of Agriculture, Osaka Metropolitan University, Osaka, Japan
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50
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Ciurko D, Chebbi A, Kruszelnicki M, Czapor-Irzabek H, Urbanek AK, Polowczyk I, Franzetti A, Janek T. Production and characterization of lipopeptide biosurfactant from a new strain of Pseudomonas antarctica 28E using crude glycerol as a carbon source. RSC Adv 2023; 13:24129-24139. [PMID: 37577095 PMCID: PMC10415746 DOI: 10.1039/d3ra03408a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/07/2023] [Indexed: 08/15/2023] Open
Abstract
Pseudomonas is a cosmopolitan genus of bacteria found in soil, water, organic matter, plants and animals and known for the production of glycolipid and lipopeptide biosurfactants. In this study bacteria (laboratory collection number 28E) isolated from soil collected in Spitsbergen were used for biosurfactant production. 16S rRNA sequencing and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF) revealed that this isolate belongs to the species Pseudomonas antarctica. In the present study, crude glycerol, a raw material obtained from several industrial processes, was evaluated as a potential low-cost carbon source to reduce the costs of lipopeptide production. Among several tested glycerols, a waste product of stearin production, rich in nitrogen, iron and calcium, ensured optimal conditions for bacterial growth. Biosurfactant production was evidenced by a reduction of surface tension (ST) and an increase in the emulsification index (E24%). According to Fourier-transform infrared spectroscopy (FTIR) and electrospray ionization mass spectrometry (ESI-MS), the biosurfactant was identified as viscosin. The critical micelle concentration (CMC) of lipopeptide was determined to be 20 mg L-1. Interestingly, viscosin production has been reported previously for Pseudomonas viscosa, Pseudomonas fluorescens and Pseudomonas libanensis. To the best of our knowledge, this is the first report on viscosin production by a P. antarctica 28E. The results indicated the potential of crude glycerol as a low-cost substrate to produce a lipopeptide biosurfactant with promising tensioactive and emulsifying properties.
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Affiliation(s)
- Dominika Ciurko
- Department of Biotechnology and Food Microbiology, Wrocław University of Environmental and Life Sciences 51-630 Wrocław Poland +48-71-320-7734
| | - Alif Chebbi
- Department of Science, Roma Tre University 00146 Rome Italy
| | - Mateusz Kruszelnicki
- Department of Process Engineering and Technology of Polymers and Carbon Materials, Wroclaw University of Science and Technology 50-370 Wrocław Poland
| | - Hanna Czapor-Irzabek
- Laboratory of Elemental Analysis and Structural Research, Wroclaw Medical University 50-556 Wroclaw Poland
| | - Aneta K Urbanek
- Faculty of Biotechnology, University of Wroclaw 50-383 Wroclaw Poland
| | - Izabela Polowczyk
- Department of Process Engineering and Technology of Polymers and Carbon Materials, Wroclaw University of Science and Technology 50-370 Wrocław Poland
| | - Andrea Franzetti
- Department of Earth and Environmental Sciences - DISAT, University of Milano-Bicocca 20126 Milano Italy
| | - Tomasz Janek
- Department of Biotechnology and Food Microbiology, Wrocław University of Environmental and Life Sciences 51-630 Wrocław Poland +48-71-320-7734
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