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Updated: Sep 8, 2025

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
Published on: March 12, 2013
Microbial dynamics across tri-trophic systems: insights from plant-herbivore-predator interactions
Hong Yan1,2, Endong Wang2,3, Guo-Shu Wei1
1College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China.
Microbial communities in plant-herbivore-predator systems are dynamic and rarely inherited across trophic levels. Specific microbes like Methylobacterium and Stenotrophomonas enhance predatory mite fitness, influencing ecological interactions.
Area of Science:
- Ecology
- Microbiology
- Evolutionary Biology
Background:
- Microbes critically regulate tri-trophic interactions, impacting ecological and evolutionary processes.
- Understanding these food chain dynamics requires well-defined tri-trophic systems.
Purpose of the Study:
- To investigate microbial dynamics in a plant-herbivore-predator system.
- To analyze microbial inheritance and community assembly across trophic levels.
Main Methods:
- Utilized 16S rRNA gene sequencing to profile microbial communities.
- Employed source tracking analysis to determine microbial origins.
- Conducted biomarker selection and correlation analyses.
Main Results:
- Significant microbial variations observed across plant, herbivore, and predator trophic levels.
- Microbiota were rarely inherited between trophic levels; deterministic processes shaped communities.
- Predatory mite microbiota differed significantly on eggplants compared to other plants.
- Methylobacterium and Stenotrophomonas abundance correlated with improved predatory mite fitness.
Conclusions:
- Microbial communities in tri-trophic systems are complex and dynamic.
- Deterministic processes significantly influence microbial community structure.
- Specific microbes can enhance the fitness of higher trophic levels, impacting ecosystem function.
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