For Publishers
DiscoveryMetadataPeer reviewHostingPublishing
For Researchers
JoinPublishReviewCollect
Register
Blog
About
Search
Advanced search
My ScienceOpen
Search
For Publishers
For Researchers
Blog
About
59
views
50
references
 Top references
cited by
107
    
0 reviews
 Review
0
comments
 Comment
0
recommends
+1 Recommend
0 collections
    0
    shares
      822
      similar
       All similar
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Antagonism of Two Plant-Growth Promoting Bacillus velezensis Isolates Against Ralstonia solanacearum and Fusarium oxysporum

      research-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Plant growth promoting rhizobacteria (PGPR) provide an effective and environmentally sustainable method to protect crops against pathogens. The spore-forming Bacilli are attractive PGPR due to their ease of storage and application. Here, we characterized two rhizosphere-associated Bacillus velezensis isolates (Y6 and F7) that possess strong antagonistic activity against Ralstonia solanacearum and Fusarium oxysporum under both laboratory and greenhouse conditions. We identified three lipopeptide (LP) compounds (surfactin, iturin and fengycin) as responsible for the antimicrobial activity of these two strains. We further dissected the contribution of LPs to various biological processes important for rhizosphere colonization. Although either iturin or fengycin is sufficient for antibacterial activity, cell motility and biofilm formation, only iturin plays a primary role in defense against the fungal pathogen F. oxysporum. Additionally, we found that LP production is significantly stimulated during interaction with R. solanacearum. These results demonstrate the different roles of LPs in the biology of B. velezensis and highlight the potential of these two isolates as biocontrol agents against phytopathogens.

          Related collections

          Most cited references50

          • Record: found
          • Abstract: found
          • Article: not found

          Bacillus lipopeptides: versatile weapons for plant disease biocontrol.

          Marc Ongena, Philippe Jacques (2008)
          In the context of biocontrol of plant diseases, the three families of Bacillus lipopeptides - surfactins, iturins and fengycins were at first mostly studied for their antagonistic activity for a wide range of potential phytopathogens, including bacteria, fungi and oomycetes. Recent investigations have shed light on the fact that these lipopeptides can also influence the ecological fitness of the producing strain in terms of root colonization (and thereby persistence in the rhizosphere) and also have a key role in the beneficial interaction of Bacillus species with plants by stimulating host defence mechanisms. The different structural traits and physico-chemical properties of these effective surface- and membrane-active amphiphilic biomolecules explain their involvement in most of the mechanisms developed by bacteria for the biocontrol of different plant pathogens.
          Article 0 comments Cited 600 times – based on 0 reviews     Review now
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Plant-microbe interactions promoting plant growth and health: perspectives for controlled use of microorganisms in agriculture.

            Gabriele Berg (2009)
            Plant-associated microorganisms fulfill important functions for plant growth and health. Direct plant growth promotion by microbes is based on improved nutrient acquisition and hormonal stimulation. Diverse mechanisms are involved in the suppression of plant pathogens, which is often indirectly connected with plant growth. Whereas members of the bacterial genera Azospirillum and Rhizobium are well-studied examples for plant growth promotion, Bacillus, Pseudomonas, Serratia, Stenotrophomonas, and Streptomyces and the fungal genera Ampelomyces, Coniothyrium, and Trichoderma are model organisms to demonstrate influence on plant health. Based on these beneficial plant-microbe interactions, it is possible to develop microbial inoculants for use in agricultural biotechnology. Dependent on their mode of action and effects, these products can be used as biofertilizers, plant strengtheners, phytostimulators, and biopesticides. There is a strong growing market for microbial inoculants worldwide with an annual growth rate of approximately 10%. The use of genomic technologies leads to products with more predictable and consistent effects. The future success of the biological control industry will benefit from interdisciplinary research, e.g., on mass production, formulation, interactions, and signaling with the environment, as well as on innovative business management, product marketing, and education. Altogether, the use of microorganisms and the exploitation of beneficial plant-microbe interactions offer promising and environmentally friendly strategies for conventional and organic agriculture worldwide.
            Article 0 comments Cited 480 times – based on 0 reviews     Review now
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Fruiting body formation by Bacillus subtilis.

              S S Branda, J González-Pastor, S Ben-Yehuda … (2001)
              Spore formation by the bacterium Bacillus subtilis has long been studied as a model for cellular differentiation, but predominantly as a single cell. When analyzed within the context of highly structured, surface-associated communities (biofilms), spore formation was discovered to have heretofore unsuspected spatial organization. Initially, motile cells differentiated into aligned chains of attached cells that eventually produced aerial structures, or fruiting bodies, that served as preferential sites for sporulation. Fruiting body formation depended on regulatory genes required early in sporulation and on genes evidently needed for exopolysaccharide and surfactin production. The formation of aerial structures was robust in natural isolates but not in laboratory strains, an indication that multicellularity has been lost during domestication of B. subtilis. Other microbial differentiation processes long thought to involve only single cells could display the spatial organization characteristic of multicellular organisms when studied with recent natural isolates.
              Article 0 comments Cited 341 times – based on 0 reviews     Review now
                Bookmark
                All references

                Author and article information

                Contributors
                John D. Helmann: jdh9@cornell.edu
                Yanfei Cai: yanfeicai@scau.edu.cn
                Journal
                Journal ID (nlm-ta): Sci Rep
                Journal ID (iso-abbrev): Sci Rep
                Title: Scientific Reports
                Publisher: Nature Publishing Group UK (London )
                ISSN (Electronic): 2045-2322
                Publication date (Electronic): 12 March 2018
                Publication date PMC-release: 12 March 2018
                Publication date Collection: 2018
                Volume: 8
                Electronic Location Identifier: 4360
                Affiliations
                [1 ]ISNI 0000 0000 9546 5767, GRID grid.20561.30, College of Natural Resources and Environment, , South China Agricultural University, ; Guangzhou, 510642 PR China
                [2 ]ISNI 000000041936877X, GRID grid.5386.8, Department of Microbiology, , Cornell University, ; Ithaca, NY 14853-8101 USA
                [3 ]ISNI 0000 0001 0067 3588, GRID grid.411863.9, College of Environmental Science and Engineering, , Guangzhou University, ; Guangzhou, 510006 PR China
                [4 ]Guangzhou Daodong New Energy Co. Ltd, Guangzhou, 510670 PR China
                Article
                Publisher ID: 22782
                DOI: 10.1038/s41598-018-22782-z
                PMC ID: 5847583
                PubMed ID: 29531357
                SO-VID: 4dedaf7d-9c1d-45cb-9461-a4810f8cfd00
                Copyright © © The Author(s) 2018
                License:

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                Date received : 15 January 2018
                Date accepted : 28 February 2018
                Categories
                Subject: Article
                Custom metadata
                issue-copyright-statement © The Author(s) 2018

                ScienceOpen disciplines: Uncategorized
                Data availability:
                ScienceOpen disciplines: Uncategorized

                Comments

                Comment on this article

                scite_

                Similar content822

                See all similar

                Cited by107

                See all cited by

                Most referenced authors920

                See all reference authors