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Related Concept Videos

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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.
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The Soil Ecosystem

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Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
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The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
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A Hydroponic Co-cultivation System for Simultaneous and Systematic Analysis of Plant/Microbe Molecular Interactions and Signaling
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Trophic interactions in microbiomes influence plant host population size and ecosystem function.

Jiaqi Tan1, Na Wei2, Martin M Turcotte3

  • 1Department of Biological Sciences, Louisianan State University, Baton Rouge, LA 70803, USA.

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|May 21, 2024
PubMed
Summary

Microbial trophic interactions, like predation and parasitism, significantly impact plant health and ecosystem services. Understanding these complex plant-microbiome relationships is crucial for predicting ecological outcomes.

Keywords:
ecosystem functionsparasitismplant–microbiome interactionspredation

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Area of Science:

  • Microbiology
  • Ecology
  • Plant Science

Background:

  • Plant microbiomes are crucial for plant health and ecosystem functions.
  • Microbial trophic interactions within plant microbiomes are poorly understood.
  • These interactions can involve diverse microorganisms across different domains.

Purpose of the Study:

  • To investigate the effects of predation and parasitism within microbiomes on plant population size.
  • To examine the impact of these microbial interactions on ecosystem phosphorus removal.
  • To elucidate the mechanisms by which trophic interactions mediate plant-microbiome symbiosis.

Main Methods:

  • Experimental manipulation of predator (protist) and parasite (bacteriophage) addition in duckweed ( *Lemna minor* ) microcosms.
  • Quantification of plant population size and ecosystem phosphorus removal rates.
  • Structural equation modeling to analyze the indirect effects of trophic interactions via the microbiome.

Main Results:

  • Predator addition led to increased plant population size and enhanced phosphorus removal.
  • Parasite addition resulted in decreased plant population size and reduced phosphorus removal.
  • Trophic interactions influenced plant and ecosystem parameters through distinct, microbiome-mediated pathways.

Conclusions:

  • Microbial trophic interactions are key drivers of plant population dynamics and ecosystem functions.
  • Understanding these interactions is essential for predicting the ecological consequences of plant-microbiome symbiosis.
  • The study underscores the importance of considering multi-domain microbial interactions in ecological research.