Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Defenses Against Pathogens and Herbivores02:26

Defenses Against Pathogens and Herbivores

29.2K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
29.2K
Gene Flow02:39

Gene Flow

37.0K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
37.0K
Development of Antibiotic Resistance01:30

Development of Antibiotic Resistance

889
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
889
Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

325
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
325
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

2.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
2.4K
Antibiotic Selection00:57

Antibiotic Selection

58.4K
Overview
58.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Foliar pathogens and drought drive plant-soil feedback between two co-occurring herbaceous plant species.

Philosophical transactions of the Royal Society of London. Series B, Biological sciences·2026
Same author

Timber and trails: Low-intensity selective logging and elephant trails shape seedling dynamics in an Afrotropical forest.

Ecological applications : a publication of the Ecological Society of America·2026
Same author

Integrating belowground recovery into tropical forest restoration design and monitoring.

Bioscience·2025
Same author

Local gene duplications drive extensive NLR copy number variation across multiple genotypes of Theobroma cacao.

G3 (Bethesda, Md.)·2025
Same author

Seed Production and 22 Years of Climatic Changes in an Everwet Neotropical Forest.

Ecology letters·2025
Same author

Putting seedlings on the map: Trade-offs in demographic rates between ontogenetic size classes in five tropical forests.

Ecology·2025

Related Experiment Video

Updated: Dec 8, 2025

Bacterial Leaf Infiltration Assay for Fine Characterization of Plant Defense Responses using the Arabidopsis thaliana-Pseudomonas syringae Pathosystem
11:50

Bacterial Leaf Infiltration Assay for Fine Characterization of Plant Defense Responses using the Arabidopsis thaliana-Pseudomonas syringae Pathosystem

Published on: October 1, 2015

22.5K

Resistance Genes Affect How Pathogens Maintain Plant Abundance and Diversity.

Simon Maccracken Stump, James H Marden, Noelle G Beckman

    The American Naturalist
    |September 24, 2020
    PubMed
    Summary

    Specialized pathogens can maintain plant diversity, but their impact depends on plant resistance genes (R-genes). The study models how R-genes influence pathogen effects on plant community diversity.

    Keywords:
    Janzen-Connell hypothesiscost of resistancegene-for-gene modelmodern coexistence theoryplant-soil feedbackresistance genes

    More Related Videos

    High-Throughput Identification of Resistance to Pseudomonas syringae pv. Tomato in Tomato using Seedling Flood Assay
    06:41

    High-Throughput Identification of Resistance to Pseudomonas syringae pv. Tomato in Tomato using Seedling Flood Assay

    Published on: March 10, 2020

    10.0K
    VIGS-Mediated Forward Genetics Screening for Identification of Genes Involved in Nonhost Resistance
    08:17

    VIGS-Mediated Forward Genetics Screening for Identification of Genes Involved in Nonhost Resistance

    Published on: August 23, 2013

    17.5K

    Related Experiment Videos

    Last Updated: Dec 8, 2025

    Bacterial Leaf Infiltration Assay for Fine Characterization of Plant Defense Responses using the Arabidopsis thaliana-Pseudomonas syringae Pathosystem
    11:50

    Bacterial Leaf Infiltration Assay for Fine Characterization of Plant Defense Responses using the Arabidopsis thaliana-Pseudomonas syringae Pathosystem

    Published on: October 1, 2015

    22.5K
    High-Throughput Identification of Resistance to Pseudomonas syringae pv. Tomato in Tomato using Seedling Flood Assay
    06:41

    High-Throughput Identification of Resistance to Pseudomonas syringae pv. Tomato in Tomato using Seedling Flood Assay

    Published on: March 10, 2020

    10.0K
    VIGS-Mediated Forward Genetics Screening for Identification of Genes Involved in Nonhost Resistance
    08:17

    VIGS-Mediated Forward Genetics Screening for Identification of Genes Involved in Nonhost Resistance

    Published on: August 23, 2013

    17.5K

    Area of Science:

    • Ecology
    • Plant Pathology
    • Evolutionary Biology

    Background:

    • Specialized pathogens are hypothesized to maintain plant community diversity.
    • Most ecological studies overlook the specific mechanisms of pathogen-plant interactions.
    • Plant resistance genes (R-genes) are known to mediate susceptibility to pathogens.

    Purpose of the Study:

    • To develop a theoretical model investigating how R-genes affect the impact of specialized pathogens on plant community diversity.
    • To synthesize the gene-for-gene model of pathogen resistance and the Janzen-Connell hypothesis.
    • To explore different scenarios of R-gene mediated susceptibility and their consequences for plant coexistence.

    Main Methods:

    • Development of a theoretical model.
    • Examination of three distinct scenarios involving R-genes and pathogen interactions.
    • Analysis of how R-gene diversity and costs of resistance influence plant survival and community dynamics.

    Main Results:

    • Pathogens promote diversity when R-genes do not affect seedling survival.
    • If resistance is not costly, pathogens may be less effective at promoting diversity due to R-gene diversity loss and potential exclusion of susceptible populations.
    • Costly resistance allows populations to avoid extinction by losing resistance alleles, altering pathogen impact.

    Conclusions:

    • The influence of specialized pathogens on plant diversity is contingent upon the specific mechanisms of plant-pathogen interactions mediated by R-genes.
    • The interplay between R-genes, pathogen susceptibility, and resistance costs significantly shapes plant community structure.
    • Further empirical research is needed to validate these theoretical scenarios in real-world plant-pathogen systems.