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  1. Article ; Online: Fish microbiota repel ovipositing mosquitoes.

    Shteindel, Nimrod / Gerchman, Yoram / Silberbush, Alon

    The Journal of animal ecology

    2024  

    Abstract: The mere presence of predators causes prey organisms to display predation-avoidance strategies. Predator presence is often communicated through predator-released chemical signals. Ovipositing female mosquitoes of several species are repelled by unknown ... ...

    Abstract The mere presence of predators causes prey organisms to display predation-avoidance strategies. Predator presence is often communicated through predator-released chemical signals. Ovipositing female mosquitoes of several species are repelled by unknown signals released from larvivorous fish. It was previously suggested that in many cases, a predator's microbiota plays an important role in the release of these signals; however, this mechanism is still poorly understood. In this study, we looked into the effects of the microbiota originating from the larvivorous Gambusia affinis (Baird and Girard) on the oviposition behaviour of gravid female mosquitoes. We used fish with altered microbiota and bacterial isolates in a set of outdoor mesocosm experiments to address this aim. We show that interference with the fish microbiota significantly reduces fish's repellent effect. We further show that the bacterium Pantoea pleuroti, isolated from the skin of the fish, repels oviposition of Culex laticinctus Edwards and Culiseta longiareolata Macquart mosquitoes similarly to the way in which live fish repel them. Our results highlight the importance of bacteria in the interspecies interactions of their hosts. Furthermore, this finding may lead to the development of an ecologically friendly mosquito repellent, that may reduce the use of larvivorous fish for mosquito control.
    Language English
    Publishing date 2024-02-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 3024-7
    ISSN 1365-2656 ; 0021-8790
    ISSN (online) 1365-2656
    ISSN 0021-8790
    DOI 10.1111/1365-2656.14068
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Quantification of bacterial adhesion to tissue in high-throughput kinetics.

    Shteindel, Nimrod / Gutman, Danielle / Atzmon, Gil / Gerchman, Yoram

    Biology methods & protocols

    2023  Volume 8, Issue 1, Page(s) bpad014

    Abstract: Bacterial adhesion to tissue is the starting point for many pathogenic processes and beneficial interactions. The dynamics and speed of adhesion (minutes) make high-resolution temporal kinetic data important, but this capability is absent from the ... ...

    Abstract Bacterial adhesion to tissue is the starting point for many pathogenic processes and beneficial interactions. The dynamics and speed of adhesion (minutes) make high-resolution temporal kinetic data important, but this capability is absent from the current toolset. We present a high-throughput method with a second-to-minute kinetic resolution, testing the adhesion of
    Language English
    Publishing date 2023-07-26
    Publishing country England
    Document type Journal Article
    ISSN 2396-8923
    ISSN (online) 2396-8923
    DOI 10.1093/biomethods/bpad014
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  3. Article ; Online: Effect of Drinking Water Salt Content on the Interaction between Surfactants and Bacteria.

    Shteindel, Nimrod / Silberbush, Alon / Gerchman, Yoram

    Microbiology spectrum

    2023  Volume 11, Issue 4, Page(s) e0101123

    Abstract: Sodium dodecyl sulfate (SDS) is a common surfactant used in various hygienic products. Its interactions with bacteria were studied previously, but the three-way interaction between surfactants, bacteria, and dissolved salts in the context of bacterial ... ...

    Abstract Sodium dodecyl sulfate (SDS) is a common surfactant used in various hygienic products. Its interactions with bacteria were studied previously, but the three-way interaction between surfactants, bacteria, and dissolved salts in the context of bacterial adhesion has not been studied. Here, we examined the combined effects of SDS (at concentrations typical of everyday hygienic activities) and salts, sodium chloride, and calcium chloride (at concentrations typically found in tap water) on the adhesion behavior of the common opportunistic pathogen Pseudomonas aeruginosa. We found that bacterial adhesion in the absence of SDS was dependent on the cation concentration rather than the total ionic strength and that combined treatment with several millimolar NaCl and SDS can increase bacterial adhesion. The addition of low concentrations of SDS (2 mM) to tens to hundreds millimolar concentrations of NaCl, typical of systems that suffer seawater incursion, reduced bacterial adhesion dramatically. Combined treatment with Ca
    MeSH term(s) Surface-Active Agents/pharmacology ; Sodium Dodecyl Sulfate/pharmacology ; Sodium Chloride ; Drinking Water ; Salts ; Bacteria
    Chemical Substances Surface-Active Agents ; Sodium Dodecyl Sulfate (368GB5141J) ; Sodium Chloride (451W47IQ8X) ; Drinking Water ; Salts
    Language English
    Publishing date 2023-07-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2807133-5
    ISSN 2165-0497 ; 2165-0497
    ISSN (online) 2165-0497
    ISSN 2165-0497
    DOI 10.1128/spectrum.01011-23
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  4. Article ; Online: Bacterial Adhesion Kinetics in a High Throughput Setting in Seconds-minutes Time Resolution.

    Shteindel, Nimrod / Gerchman, Yoram

    Bio-protocol

    2021  Volume 10, Issue 23, Page(s) e3844

    Abstract: Bacterial surface adhesion, the first step in many important processes including biofilm formation and tissue invasion, is a fast process that occurs on a time scale of seconds. Adhesion patterns tend to be stochastic and spatially heterogeneous, ... ...

    Abstract Bacterial surface adhesion, the first step in many important processes including biofilm formation and tissue invasion, is a fast process that occurs on a time scale of seconds. Adhesion patterns tend to be stochastic and spatially heterogeneous, especially when bacteria are present in low population densities and at early stages of adhesion to the surface. Thus, in order to observe this process, a high degree of temporal resolution is needed across a large surface area in a way that allows several replicates to be monitored. Some of the current methods used to measure bacterial adhesion include microscopy, staining-based microtiter assays, spectroscopy, and PCR. Each of these methods has advantages in assaying aspects of bacterial surface adhesion, but none can capture all features of the process. In the protocol presented here, adapted from Shteindel
    Language English
    Publishing date 2021-01-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2833269-6
    ISSN 2331-8325 ; 2331-8325
    ISSN (online) 2331-8325
    ISSN 2331-8325
    DOI 10.21769/BioProtoc.3844
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Electrochemical Detection of Waterborne Bacteria Using Bi-Functional Magnetic Nanoparticle Conjugates.

    Gunasekaran, Dharanivasan / Gerchman, Yoram / Vernick, Sefi

    Biosensors

    2022  Volume 12, Issue 1

    Abstract: Detection of microbial contamination in water is imperative to ensure water quality. We have developed an electrochemical method for the detection ... ...

    Abstract Detection of microbial contamination in water is imperative to ensure water quality. We have developed an electrochemical method for the detection of
    MeSH term(s) Electrochemical Techniques ; Escherichia coli ; Magnetite Nanoparticles ; Metallocenes/chemistry
    Chemical Substances Magnetite Nanoparticles ; Metallocenes
    Language English
    Publishing date 2022-01-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662125-3
    ISSN 2079-6374 ; 2079-6374
    ISSN (online) 2079-6374
    ISSN 2079-6374
    DOI 10.3390/bios12010036
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  6. Article ; Online: Pseudomonas aeruginosa Mobbing-Like Behavior against Acanthamoeba castellanii Bacterivore and Its Rapid Control by Quorum Sensing and Environmental Cues.

    Shteindel, Nimrod / Gerchman, Yoram

    Microbiology spectrum

    2021  Volume 9, Issue 3, Page(s) e0064221

    Abstract: Mobbing, group attack of prey on predator, is a behavior seen in many animal species in which prey animals use numbers and coordination to counter individually superior predators. We studied attack behavior of Pseudomonas aeruginosa toward the ... ...

    Abstract Mobbing, group attack of prey on predator, is a behavior seen in many animal species in which prey animals use numbers and coordination to counter individually superior predators. We studied attack behavior of Pseudomonas aeruginosa toward the bacterivore Acanthamoeba castellanii. This behavior consists of directed motility toward and specific adhesion to the predator cells, enacted in seconds and responding to both prey and predator population densities. Attack coordination relies on remote sensing of the predator and the use of the Pseudomonas quinolone signal (PQS), a P. aeruginosa species-specific quorum sensing molecule. Mutants unable to produce the PQS show unspecific adhesion and reduced survival, and a corresponding increase in predator population occurs as a result of predation. The addition of an external PQS restored some predator-specific adherence within seconds, suggesting a novel response mechanism to this quorum sensing (QS) signal. Fast behavioral response of P. aeruginosa to PQS is also supported by the rate of signal accumulation in the culture, reaching relevant concentrations within minutes, enabling bacteria response to self population density in these short timescales. These results portray a well-regulated group attack of the bacteria against their predator, reacting within seconds to environmental cues and species-specific signaling, which is analogous in many ways to animal mobbing behavior.
    MeSH term(s) Acanthamoeba castellanii/growth & development ; Acanthamoeba castellanii/microbiology ; Acanthamoeba castellanii/physiology ; Bacterial Adhesion ; Host-Pathogen Interactions ; Kinetics ; Population Dynamics ; Pseudomonas aeruginosa/chemistry ; Pseudomonas aeruginosa/physiology ; Quorum Sensing
    Language English
    Publishing date 2021-12-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2807133-5
    ISSN 2165-0497 ; 2165-0497
    ISSN (online) 2165-0497
    ISSN 2165-0497
    DOI 10.1128/Spectrum.00642-21
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  7. Article ; Online: Bacterial detoxification of plant defence secondary metabolites mediates the interaction between a shrub and frugivorous birds.

    Trabelcy, Beny / Shteindel, Nimrod / Lalzar, Maya / Izhaki, Ido / Gerchman, Yoram

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 1821

    Abstract: Many plants produce fleshy fruits, attracting fruit-eating animals that disperse the seeds in their droppings. Such seed dispersal results in a conflict between the plant and the animal, as digestion of seeds can be highly beneficial to the animal but ... ...

    Abstract Many plants produce fleshy fruits, attracting fruit-eating animals that disperse the seeds in their droppings. Such seed dispersal results in a conflict between the plant and the animal, as digestion of seeds can be highly beneficial to the animal but reduces plant fitness. The plant Ochradenus baccatus uses the myrosinase-glucosinolates system to protect its seeds. We show that hydrolysis of the O. baccatus fruit glucosinolates by the myrosinase enzyme inhibited digestive enzymes and hampered digestion in naïve individuals of the bird Pycnonotus xanthopygos. However, digestion in birds regularly feeding on O. baccatus fruits was unaffected. We find that Pantoea bacteria, dominating the gut of these experienced birds as well as the fruits, thrive on glucosinolates hydrolysis products in culture. Augmentation of Pantoea protects both naïve birds and plant seedlings from the effects of glucosinolates hydrolysis products. Our findings demonstrate a tripartite interaction, where the plant-bird mutually beneficial interactions are mediated by a communal bacterial tenant.
    MeSH term(s) Animals ; Feeding Behavior ; Glucosinolates/metabolism ; Seeds/metabolism ; Fruit/metabolism ; Passeriformes ; Seed Dispersal
    Chemical Substances Glucosinolates
    Language English
    Publishing date 2023-03-31
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-37525-6
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  8. Article ; Online: Olive Mill Wastewater Extract as a Potential Mosquito Larvicide.

    Silberbush, Alon / Halabi, Maram / Shteindel, Nimrod / Gerchman, Yoram / Azaizeh, Hassan / Shahar, Ben / Kurzbaum, Eyal

    Journal of vector ecology : journal of the Society for Vector Ecology

    2023  Volume 48, Issue 2, Page(s) 141–144

    MeSH term(s) Animals ; Wastewater ; Olea ; Plant Extracts
    Chemical Substances Wastewater ; Plant Extracts
    Language English
    Publishing date 2023-10-16
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2212806-2
    ISSN 1948-7134 ; 1081-1710
    ISSN (online) 1948-7134
    ISSN 1081-1710
    DOI 10.52707/1081-1710-48.2.141
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  9. Article ; Online: Bacterial detoxification of plant defence secondary metabolites mediates the interaction between a shrub and frugivorous birds

    Beny Trabelcy / Nimrod Shteindel / Maya Lalzar / Ido Izhaki / Yoram Gerchman

    Nature Communications, Vol 14, Iss 1, Pp 1-

    2023  Volume 11

    Abstract: The interactions between plants and frugivores are mediated by plants’ secondary metabolites. Here the authors demonstrate that specific bacteria, capable of consuming these metabolites, can alter these interactions, benefiting both plants and fruit ... ...

    Abstract The interactions between plants and frugivores are mediated by plants’ secondary metabolites. Here the authors demonstrate that specific bacteria, capable of consuming these metabolites, can alter these interactions, benefiting both plants and fruit consumers.
    Keywords Science ; Q
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Evaluation of the biocontrol activity of

    Naama-Amar, Alaa / Gerchman, Yoram / Iasur Kruh, Lilach / Naor, Vered

    Plant signaling & behavior

    2022  Volume 17, Issue 1, Page(s) 2070355

    Abstract: Frateuria ... ...

    Abstract Frateuria defendens
    MeSH term(s) Bacteria ; Capsules ; Phytoplasma ; Plant Diseases/microbiology ; Plant Diseases/prevention & control ; Plants ; Tenericutes
    Chemical Substances Capsules
    Language English
    Publishing date 2022-04-29
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1559-2324
    ISSN (online) 1559-2324
    DOI 10.1080/15592324.2022.2070355
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