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Evaluating Leaf Responses to Microbial Secondary Metabolites Using A High-Throughput Format

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Beyond pathogens: microbiota interactions with the plant immune system.

Paulo José Pl Teixeira¹, Nicholas R Colaianni², Connor R Fitzpatrick¹

¹Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Howard Hughes Medical Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.

Current Opinion in Microbiology

|September 29, 2019

Summary

Plants use their immune systems to control beneficial microbes, not just pathogens. This interaction shapes the plant microbiome, which in turn enhances plant immunity against disease.

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Area of Science:

Plant immunity
Microbiome assembly
Host-microbe interactions

Background:

Plant immune receptors detect microbial molecules, triggering defenses against pathogens.
The plant immune system's role in managing commensal microbes is less understood.
Commensal microbes can evade or suppress plant immune responses, similar to pathogens.

Purpose of the Study:

To explore the interplay between plant immunity and the plant microbiome.
To investigate how plant immunity influences microbiome composition.
To understand how the microbiome contributes to plant defense.

Main Methods:

Literature review on plant immune responses and microbiome dynamics.
Analysis of recent research findings on host-microbe interactions.
Synthesis of current knowledge to propose a new model.

Main Results:

Plant immunity actively shapes the plant microbiome.
The plant immune system regulates microbial homeostasis under environmental changes.
Commensals, like pathogens, can modulate host immunity.

Conclusions:

The plant immune system is a key factor in assembling and maintaining the plant microbiome.
The plant microbiome can act as an extended layer of plant defense against pathogens.
Reciprocal interactions between plant immunity and the microbiome are crucial for plant health.