An effluent pump family distributed across plant commensal bacteria conditions host- and organ-specific glucosinolate detoxification
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View abstract on PubMed
Summary
This summary is machine-generated.Plant colonization involves many bacterial genes, with most being host-specific. An efflux pump aids Arabidopsis shoot colonization by detoxifying plant compounds, protecting bacteria from plant defenses.
Area Of Science
- Microbiology
- Plant Science
- Genomics
Background
- Plants host distinct microbial communities, the plant microbiome, differing from soil microbes.
- Understanding microbial traits is crucial for characterizing plant microbiome assembly.
Purpose Of The Study
- Identify bacterial genes contributing to plant colonization in monocot and eudicot hosts.
- Characterize specific microbial adaptations for plant-organ association.
Main Methods
- Utilized barcoded mutant libraries to screen for colonization genes.
- Employed genomic diversity within Arabidopsis thaliana to investigate host-microbe interactions.
Main Results
- Dozens of bacterial genes influence plant colonization.
- Most colonization genes are specific to a single host plant or organ.
- Identified an efflux pump critical for Arabidopsis shoot colonization.
- This efflux pump detoxifies glucosinolate breakdown products in specific Arabidopsis accessions.
Conclusions
- Bacterial colonization is shaped by a combination of shared and highly specific genes.
- An efflux pump provides protection against plant-derived toxins, facilitating commensalism.
- This mechanism highlights bacterial adaptation to plant defense compounds, particularly glucosinolates.
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