Bacterial Symbiont
Bacterial Symbiont - Related Videos
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Transposon-insertion Sequencing as a Tool to Elucidate Bacterial Colonization Factors in a Burkholderia gladioli Symbiont of Lagria villosa Beetles
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Cited by 2 •
2021
This is an adapted method for identifying candidate insect colonization factors in a Burkholderia beneficial symbiont. The beetle host is infected with a random mutant library generated via transposon mutagenesis, and library complexity after colonization is compared to a control grown in vitro.
05:21
Bacterial Transformation - Student Protocol
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2019
Bacterial Transformation ExpandIMPORTANT: In addition to wearing the appropriate personal protective equipment, be sure to take care to keep your face away from suspension cultures, and to avoid inhaling reagents. Do not touch your face while performing the experiment. Always wash your hands before and after every experiment. When you are ready to safely begin, check to make sure you have a tube or tubes of competent E. coli cells in your ice bucket. Then, transfer 50 µL from one of these tubes...
03:57
Bacterial Infection Quantitation Assay: A Method to Quantify Intraocular Bacterial Load in Mouse Model of Bacterial Endophthalmitis
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2025
This video describes the technique of quantifying bacterial infection from eye homogenates obtained from a murine model of bacterial endophthalmitis caused by Bacillus cereus. This technique helps study the host immune response and its dependency on the host and ocular bacterial gene expression in murine models.
14:05
Imaging InlC Secretion to Investigate Cellular Infection by the Bacterial Pathogen Listeria monocytogenes
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Cited by 7 •
2013
Listeria monocytogenes is a Gram positive bacterial pathogen frequently used as a major model for the study of intracellular parasitism. Imaging late L. monocytogenes infection stages within the context of small-interfering RNA screens allows for the global study of cellular pathways required for bacterial infection of target host cells.
03:57
Bacterial Endophthalmitis Mouse Model: A Method for Generating Bacterial Endophthalmitis via Intravitreal Injection of Bacterial Suspension into Eye of Mouse
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2025
This video describes a method for generating a mouse model that mimics bacterial endophthalmitis – an intraocular infection resulting from a bacterial invasion into the eye’s vitreous cavity – via intravitreal injection of a bacterial suspension into the eye. This mouse model helps study the disease mechanism and evaluate therapeutics for it.
FAQs
Nutrient and metabolite exchange provides a material basis for sustained association between bacterial symbionts and their hosts. These exchanges can influence how microbial communities function and how hosts develop or adapt to their environments. Examining what substances move between partners helps explain why a particular association affects host biology, ecosystem performance, or susceptibility to disease.
A bacterial symbiont may be acquired from the surrounding environment or transmitted between generations, creating different routes into the host-associated community. Environmental acquisition connects symbiont composition with local conditions, whereas generational transfer can maintain an association across host lineages. Comparing these routes helps researchers interpret microbiome stability, ecological adaptation, and host development.
Chemical signaling can coordinate interactions between bacterial symbionts and their hosts, while surface colonization establishes the physical location in which those interactions occur. Together, these processes help organize microbial communities and support communication at the host-microbe interface. Their effects are relevant to microbiome function because location and signaling influence how closely partners interact.
Bacterial symbionts can modulate host defenses, changing how the host responds to its associated microbial community and surrounding biological challenges. This influence connects symbiont activity with disease susceptibility rather than limiting its effects to nutrient exchange. Studying defense modulation therefore helps clarify why differences in microbiome composition may be associated with different host health outcomes.
Research on bacterial symbionts can connect microbial activity with host development and ecological adaptation. Because these bacteria participate in signaling, metabolite exchange, colonization, and defense modulation, their associations provide a way to examine how hosts function in changing environments. This perspective also links individual host biology to broader microbiome and ecosystem processes.
Bacterial symbiont research supports efforts to understand and manipulate microbial communities for improved host health or ecosystem performance. In agriculture, biotechnology, and related applications, the central goal is to use knowledge of host-microbe interactions rather than consider bacteria in isolation. Such work can inform strategies that adjust community function, host outcomes, or environmental performance.