An altruistic rhizo-microbiome strategy in crop rotation systems for sustainable management of soil-borne diseases
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View abstract on PubMed
Summary
This summary is machine-generated.Garlic root exudates create a soil microbiome legacy. This process enriches beneficial microbes for other crops but harms garlic by promoting pathogenic Penicillium allii, revealing a self-detrimental crop rotation strategy.
Area Of Science
- Microbiology
- Agronomy
- Plant Science
Background
- Crop rotation influences soil microbiome composition and health.
- Root exudates play a key role in shaping rhizosphere microbial communities.
- The 'altruistic' effects of crops on soil legacy are not fully understood, especially regarding microbial assembly.
Purpose Of The Study
- To investigate the altruistic but self-detrimental phenomena in garlic crop rotation systems.
- To elucidate the role of garlic root exudates in microbial community assembly.
- To understand the mechanism behind the enrichment of specific microbial taxa in the rhizosphere.
Main Methods
- Meta-analysis of crop rotation studies.
- In vivo experiments using a garlic-pepper rotation system.
- Analysis of root exudates and their impact on microbial communities (e.g., diallyl disulfide and ROS stress).
Main Results
- Garlic root exudates, specifically diallyl disulfide (DADS), induce oxidative stress (ROS) in the rhizosphere.
- This stress suppresses ROS-sensitive pathogens while enriching ROS-tolerant beneficial microbes.
- The Penicillium genus, particularly Penicillium allii, accumulates due to its oxidative stress tolerance, benefiting non-Allium crops but harming garlic.
Conclusions
- Garlic's DADS-mediated ROS selection pressure drives an 'altruistic' microbiome succession, enriching stress-tolerant Penicillium allii.
- This mechanism explains the self-detrimental effect in crop rotation, where beneficial microbes for subsequent crops negatively impact the current crop.
- Findings support targeted soil-borne disease management through plant-driven microbial community engineering in sustainable agriculture.
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