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Related Concept Videos

Predator-Prey Interactions02:39

Predator-Prey Interactions

Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
Microbe-Plant Interactions01:09

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...
The Roles of Bacteria and Fungi in Plant Nutrition02:11

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.
Microbial Interactions: Predation01:28

Microbial Interactions: Predation

Microbial predation refers to the process by which one microorganism kills and consumes another to obtain nutrients and energy. It encompasses both bacterial and protozoan predators. This interaction plays a crucial role in shaping microbial communities and regulating nutrient cycling.Bacterial Predators: Epibiotic vs. EndobioticBacterial predators are classified based on their mode of attack as either epibiotic or endobiotic. Epibiotic predators, such as Vampirococcus, attach to the surface of...
Epiphytes, Parasites, and Carnivores02:40

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...
Symbiosis00:58

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...

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Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
10:20

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Published on: March 12, 2013

Root herbivore effects on aboveground multitrophic interactions: patterns, processes and mechanisms.

Roxina Soler1, Wim H Van der Putten, Jeffrey A Harvey

  • 1Laboratory of Entomology, Wageningen University, P.O. Box 8031, 6700 EH, Wageningen, The Netherlands. roxina.soler@wur.nl

Journal of Chemical Ecology
|April 3, 2012
PubMed
Summary
This summary is machine-generated.

Belowground organisms impact aboveground insect herbivores and carnivores by altering plant chemistry. Understanding these above-belowground interactions is crucial for ecosystem functioning and species evolution.

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Area of Science:

  • Ecology
  • Soil Biology
  • Food Web Dynamics

Background:

  • Traditional studies of terrestrial food webs focused on aboveground interactions.
  • Recent research highlights the critical role of belowground organisms in influencing aboveground plant-herbivore dynamics.
  • Understanding these above-belowground connections is essential for a comprehensive view of ecological communities.

Purpose of the Study:

  • To review the effects of root feeders on aboveground insect herbivores and their natural enemies (parasitoids).
  • To explore the mechanisms mediating these above-belowground interactions, including plant nutritional and chemical changes.
  • To advocate for a more dynamic, community-level framework for studying these interactions.

Main Methods:

  • Literature synthesis and review of existing studies on above-belowground interactions.
  • Analysis of mechanisms such as changes in plant nutritional quality, secondary chemistry, and defense signaling.
  • Discussion of how to integrate community variation (species, densities, space, time) into ecological frameworks.

Main Results:

  • Root feeders significantly influence the performance of aboveground insect herbivores and parasitoids.
  • Plant responses, including altered nutritional content and defense compounds, mediate these effects.
  • The field is moving towards incorporating higher trophic levels and non-herbivorous organisms.

Conclusions:

  • Above-belowground interactions are fundamental to understanding terrestrial ecosystem functioning.
  • A community-based approach is necessary to capture the complexity of these interactions.
  • Further research is needed to integrate species, density, space, and time dynamics.