Roots: metabolic architects of beneficial microbiome assembly

Area of Science:

• Agricultural Science
• Microbiology
• Plant Biology

Background:

• Sustainable agriculture seeks to enhance crop production while minimizing environmental impact.
• Plant-microbiome interactions are crucial for plant health, nutrient uptake, and stress tolerance.
• Root exudates, a diverse array of plant metabolites, play a significant role in shaping the root microbiome.

Purpose of the Study:

• To review the role of plant metabolites in root microbiome assembly.
• To highlight the regulation of these metabolites by plant genotype, environment, and immunity.
• To propose a framework for understanding roots as metabolic architects of their microbiomes.

Main Methods:

• Literature review of plant-metabolite-microbiome interactions.
• Analysis of the co-evolution of plant immunity, nutrient acquisition, and microbiome assembly.
• Synthesis of current knowledge on metabolite-driven microbial selection.

Main Results:

• Plant metabolites act as nutrients, signals, and antimicrobials, influencing microbial recruitment and function.
• Root microbiome assembly is dynamically regulated by plant genotype, environmental factors, and plant immune responses.
• Plant-metabolite-microbiome interactions are intertwined with essential plant life-support systems.

Conclusions:

• Roots are metabolic architects that actively shape their associated microbiomes.
• Elucidating metabolite-driven microbial selection mechanisms can guide the development of crops with enhanced microbiome recruitment.
• This understanding is vital for advancing sustainable agriculture and crop resilience.