Related Experiment Video
Updated: Aug 2, 2026

09:02
Visualizing Bacteria in Nematodes using Fluorescent Microscopy
Published on: October 19, 2012
19.3K
Special Issue: Insects, Nematodes, and Their Symbiotic Bacteria
Ulrich Theopold1, Alexis Dziedziech1, Pavel Hyrsl2
1Department of Molecular Biosciences, Wenner-Gren Institute, Stockholm University, Svante Arrhenius Väg 20C, 10691 Stockholm, Sweden.
Insects
|September 3, 2020
Summary
Insect pathogenic nematodes (EPNs) offer new tools and insights into host interactions and innate immunity. Advanced studies reveal infection dynamics and evolutionary processes.
Area of Science:
- Entomology and Nematology
- Evolutionary Biology
- Immunology
Background:
- Insect pathogenic nematodes (EPNs) are valuable models for studying host-parasite interactions.
- Understanding EPNs contributes to evolutionary dynamics of innate immune responses.
- This special issue highlights advancements in EPN research.
Discussion:
- EPNs expand the available tools for biological control and research.
- Mutualistic interactions between EPNs and their hosts are explored.
- Innate immunity, including emerging aspects, is investigated through EPN infection models.
Key Insights:
- New insights into the kinetics of EPN infections are provided.
- Advanced transcriptome studies offer high spatiotemporal resolution.
- Live imaging techniques enhance the understanding of EPN-host dynamics.
Outlook:
- Continued exploration of EPNs as research tools and in biological control.
- Further elucidation of innate immune system evolution and function.
- Integration of advanced imaging and transcriptomics for future discoveries.
Related Concept Videos
Symbiosis
Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
The Roles of Bacteria and Fungi in Plant Nutrition
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
Epiphytes, Parasites, and Carnivores
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the biosynthesis of the...
Microbial Interactions: Cooperation
Microbial cooperation involves beneficial interactions in which different species work together for individual or mutual advantage. These interactions can profoundly influence ecological dynamics and evolutionary processes, and they are essential to many pathogenic and symbiotic relationships.Nematode–Bacteria CooperationA striking example is the relationship between the Gram-negative bacterium Xenorhabdus nematophila and the parasitic nematode Steinernema carpocapsae. Juvenile nematodes...
Microbial Interactions: Parasitism
Parasitism is a form of microbial interaction in which parasitic microbes exploit a host organism for nutrients and shelter, often at the host's expense. Unlike mutualistic relationships, where both organisms benefit, parasitism benefits only the parasite and harms the host.Classification of ParasitesMicrobial parasites are broadly classified based on their location relative to the host.Ectoparasites remain on the host’s surface, such as the skin or outer tissues, drawing nutrients...
Microbe-Plant Interactions
Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...

