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Biome | Pseudomonas sensing

Biome | Pseudomonas sensing | Quorum sensing | Scoop.it
Computational modelling of the quorum sensing systems of Pseudomonas aeruginosa provide insights into the anti-bacterial drug targets | Research published by BioMed Central

Via Mel Melendrez-Vallard
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Quorum sensing
Topics related to bacteria and eukaryotes communitcation
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Researchers Find Possible Cancer Cure Through Quorum Sensing | Information Society

Researchers Find Possible Cancer Cure Through Quorum Sensing | Information Society | Quorum sensing | Scoop.it
Researchers Find Possible Cancer Cure Through Quorum Sensing - http://t.co/aTj11KPTgf http://t.co/84hhoQXdEe
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Revealing a world of biofilms [mdash] the pioneering research of Bill Costerton : Nature Reviews Microbiology : Nature Publishing Group

Revealing a world of biofilms [mdash] the pioneering research of Bill Costerton : Nature Reviews Microbiology : Nature Publishing Group | Quorum sensing | Scoop.it
RT @McCarthy_Ronan: Interesting essay on the pioneer of biofilm research, Bill Costerton http://t.co/hM5SdwqaDw #biofilm
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N-acyl-homoserine lactones-producing bacteria protect plants against plant and human pathogens -

N-acyl-homoserine lactones-producing bacteria protect plants against plant and human pathogens - | Quorum sensing | Scoop.it

The implementation of beneficial microorganisms for plant protection has a long history. Many rhizobia bacteria are able to influence the immune system of host plants by inducing resistance towards pathogenic microorganisms. In this report, we present a translational approach in which we demonstrate the resistance-inducing effect of Ensifer meliloti (Sinorhizobium meliloti) on crop plants that have a significant impact on the worldwide economy and on human nutrition. Ensifer meliloti is usually associated with root nodulation in legumes and nitrogen fixation. Here, we suggest that the ability of S. meliloti to induce resistance depends on the production of the quorum-sensing molecule, oxo-C14-HSL. The capacity to enhanced resistance provides a possibility to the use these beneficial bacteria in agriculture. Using the Arabidopsis-Salmonella model, we also demonstrate that the application of N-acyl-homoserine lactones-producing bacteria could be a successful strategy to prevent plant-originated infections with human pathogens.


Via Christophe Jacquet
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Using bacterial biofilms to create new materials - DigitalJournal.com

Using bacterial biofilms to create new materials - DigitalJournal.com | Quorum sensing | Scoop.it
DigitalJournal.com Using bacterial biofilms to create new materials DigitalJournal.com According to Wyss Institute Core Faculty member Neel Joshi, Ph.D: “Most biofilm-related research today focuses on how to get rid of biofilms, but we demonstrate...
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Density-dependent fitness benefits ... [Proc Natl Acad Sci U S A. 2012] - PubMed - NCBI

PubMed comprises more than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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The hierarchy quorum sensing network in Pseudom... [Protein Cell. 2014] - PubMed - NCBI

PubMed comprises more than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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Quorum-Sensing: Bacteria's Deadly Form of Communication - Design & Trend

Quorum-Sensing: Bacteria's Deadly Form of Communication - Design & Trend | Quorum sensing | Scoop.it
Design & Trend Quorum-Sensing: Bacteria's Deadly Form of Communication Design & Trend Helen Blackwell, a professor of chemistry at the University of Wisconsin-Madison, has been making artificial compounds that mimic the natural quorum-sensing...
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Quorum sensing peptides mediating interspecies bacterial cell death as a novel class of antimicrobial agents

Quorum sensing peptides mediating interspecies bacterial cell death as a novel class of antimicrobial agents #COiM
http://t.co/9JlEODHvjB
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Education and Technology News: Quorum-sensing signals control when bacteria turn deadly

Check this out! Quorum-sensing signals control when bacteria turn deadly http://t.co/FC8nulp10b #scichat #science
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Mechanisms of quorum sensing and strategies for q... [J Fish Dis. 2014] - PubMed - NCBI

PubMed comprises more than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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Guava Leaf Extract Inhibits Quorum-Sensing and Chro... [PLoS One. 2014] - PubMed - NCBI

PubMed comprises more than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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Emerging Microbes & Infections - The vaccine potential of Bordetella pertussis biofilm-derived membrane proteins

Emerging Microbes & Infections - The vaccine potential of Bordetella pertussis biofilm-derived membrane proteins | Quorum sensing | Scoop.it
Emerging Microbes and Infections (EMI) is a new open access, fully peer-reviewed journal that will publish the best and most interesting research in emerging microbes and infectious disease.
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Frontiers | An Evolving Perspective on the Pseudomonas aeruginosa Orphan Quorum Sensing Regulator QscR | Frontiers in Cellular and Infection Microbiology

Many Proteobacteria govern responses to changes in cell density by using acyl-homoserine lactone (AHL) quorum-sensing (QS) signaling. Similar to the LuxI-LuxR system described in Vibrio fischeri, a...
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Cooperation, quorum sensing, and evolution of v... [Infect Immun. 2014] - PubMed - NCBI

PubMed comprises more than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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Rescooped by María L. Burgos-Garay from Plant pathogens and pests
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Resistance Inducers Modulate Pseudomonas syringae pv. Tomato Strain DC3000 Response in Tomato Plants

Resistance Inducers Modulate Pseudomonas syringae pv. Tomato Strain DC3000 Response in Tomato Plants | Quorum sensing | Scoop.it

The efficacy of hexanoic acid (Hx) as an inducer of resistance in tomato plants against Pseudomonas syringae pv. tomato DC3000 was previously demonstrated, and the plant response was characterized. Because little is known about the reaction of the pathogen to this effect, the goal of the present work was to determine whether the changes in the plant defence system affect the pathogen behaviour. This work provides the first demonstration of the response of the pathogen to the changes observed in plants after Hx application in terms of not only the population size but also the transcriptional levels of genes involved in quorum sensing establishment and pathogenesis. Therefore, it is possible that Hx treatment attenuates the virulence and survival of bacteria by preventing or diminishing the appearance of symptoms and controlling the growth of the bacteria in the mesophyll. It is interesting to note that the gene transcriptional changes in the bacteria from the treated plants occur at the same time as the changes in the plants. Hx is able to alter bacteria pathogenesis and survival only when it is applied as a resistance inducer because the changes that it promotes in plants affect the bacteria.


Via Christophe Jacquet
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5th ASM Conference on Cell-Cell Communication in Bacteria

5th ASM Conference on Cell-Cell Communication in Bacteria | Quorum sensing | Scoop.it
Cell-Cell Communication - Scope (@yodacomplex Will probably go to EEID. Heading to this quorum sensing one next month too: http://t.co/OntyeNj7nP)
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Teaching Bacteria to Tell Cancer Cells to Stop Spreading - Genetic Engineering & Biotechnology News

Teaching Bacteria to Tell Cancer Cells to Stop Spreading - Genetic Engineering & Biotechnology News | Quorum sensing | Scoop.it
Teaching Bacteria to Tell Cancer Cells to Stop Spreading
Genetic Engineering & Biotechnology News
"During an infection, bacteria release molecules which allow them to 'talk' to each other," said Dr.
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Quorum sensing and the confusion about diff... [Trends Microbiol. 2012] - PubMed - NCBI

PubMed comprises more than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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Recruiting Bacteria to be Technology Innovation Partners - Infection Control Today

Recruiting Bacteria to be Technology Innovation Partners Infection Control Today "Most biofilm-related research today focuses on how to get rid of biofilms, but we demonstrate here that we can engineer these super tough natural materials to perform...
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Mutational Analysis of the Quorum-Sensing Receptor... [Chem Biol. 2014] - PubMed - NCBI

PubMed comprises more than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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Bacteria's on/off switch: Scientists target quorum sensing to 'tame...

Bacteria's on/off switch: Scientists target quorum sensing to 'tame... | Quorum sensing | Scoop.it
Scientist looking for the 'off switch' to keep bacteria from turning deadly in the human body. Research suggests alternative to antibiotics.
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Biofilms Hold Promise for Designer Nanomaterials to Clean up Polluted Rivers - AZoNano.com

Biofilms Hold Promise for Designer Nanomaterials to Clean up Polluted Rivers - AZoNano.com | Quorum sensing | Scoop.it
AZoNano.com Biofilms Hold Promise for Designer Nanomaterials to Clean up Polluted Rivers AZoNano.com "Most biofilm-related research today focuses on how to get rid of biofilms, but we demonstrate here that we can engineer these super tough natural...
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Xylella fastidiosa outer membrane vesicles modulate plant colonization by blocking attachment to surfaces

Xylella fastidiosa outer membrane vesicles modulate plant colonization by blocking attachment to surfaces | Quorum sensing | Scoop.it

Significance

Release of outer membrane vesicles (OMVs) is a general feature of Gram-negative bacteria. Most studies have addressed the mechanisms of their formation or the cargo they can carry, but other roles remain to be explored further. Here we provide evidence for a novel role for OMVs in Xylella fastidiosa, a bacterial pathogen that colonizes the xylem of important crop plants. OMVs, whose production is suppressed by a quorum-sensing system, serve as an autoinhibitor of cell adhesion to surfaces, thereby blocking attachment-driven biofilm formation that would restrict movement within the xylem and thus colonization of plants. The ubiquity of OMV formation in the bacterial world suggests that these extracellular products may have alternative roles that might modulate movement and biofilm formation.

 Next SectionAbstract

Outer membrane vesicles (OMVs) of Gram-negative bacteria have been studied intensively in recent years, primarily in their role in delivering virulence factors and antigens during pathogenesis. However, the near ubiquity of their production suggests that they may play other roles, such as responding to envelope stress or trafficking various cargoes to prevent dilution or degradation by other bacterial species. Here we show that OMVs produced by Xylella fastidiosa, a xylem-colonizing plant pathogenic bacterium, block its interaction with various surfaces such as the walls of xylem vessels in host plants. The release of OMVs was suppressed by the diffusible signal factor-dependent quorum-sensing system, and a X. fastidiosa ΔrpfF mutant in which quorum signaling was disrupted was both much more virulent to plants and less adhesive to glass and plant surfaces than the WT strain. The higher virulence of the ΔrpfF mutant was associated with fivefold higher numbers of OMVs recovered from xylem sap of infected plants. The frequency of attachment of X. fastidiosa to xylem vessels was 20-fold lower in the presence of OMVs than in their absence. OMV production thus is a strategy used by X. fastidiosa cells to adjust attachment to surfaces in its transition from adhesive cells capable of insect transmission to an “exploratory” lifestyle for systemic spread within the plant host which would be hindered by attachment. OMV production may contribute to the movement of other bacteria in porous environments by similarly reducing their contact with environmental constituents.


Via Christophe Jacquet
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Investigation of quorum sensing-depen... [J Microbiol Biotechnol. 2014] - PubMed - NCBI

PubMed comprises more than 23 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
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Plastics from bacteria natural functions and applications (microbiology monographs volume 14)

Bacteriology, microbiology, biologists.

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