Journal
MICROBIOME
Volume 10, Issue 1, Pages -Publisher
BMC
DOI: 10.1186/s40168-022-01375-z
Keywords
Microbial community assembly; Phylogenetic pattern; Rhizosphere metabolomics; Fusarium wilt disease; Integration analysis metadata
Categories
Funding
- Natural Science Foundation of China [42277297, 42090060]
- Natural Science Foundation of Jiangsu Province [BK20211577]
- Jiangsu Funding Program for Excellent Postdoctoral Talent [2022ZB325]
- Innovative Research Team Development Plan of the Ministry of Education of China [IRT_17R56]
- Qing Lan Project of Jiangsu Province
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This study investigated the characteristics of rhizosphere microbiomes related to Fusarium wilt disease and assessed their assembly process. Results showed that metabolite-mediated microbial community assembly is strongly linked to the occurrence of wilt disease.
Background: Process and function that underlie the assembly of a rhizosphere microbial community may be strongly linked to the maintenance of plant health. However, their assembly processes and functional changes in the deterioration of soilborne disease remain unclear. Here, we investigated features of rhizosphere microbiomes related to Fusarium wilt disease and assessed their assembly by comparison pair of diseased/healthy sequencing data. The untargeted metabolomics was employed to explore potential community assembly drivers, and shotgun metagenome sequencing was used to reveal the mechanisms of metabolite-mediated process after soil conditioning. Results: Results showed the deterministic assembly process associated with diseased rhizosphere microbiomes, and this process was significantly correlated to five metabolites (tocopherol acetate, citrulline, galactitol, octadecylglycerol, and behenic acid). Application of the metabolites resulted in a deterministic assembly of microbiome with the high morbidity of watermelon. Furthermore, metabolite conditioning was found to weaken the function of autotoxin degradation undertaken by specific bacterial group (Bradyrhizobium, Streptomyces, Variovorax, Pseudomonas, and Sphingomonas) while promoting the metabolism of small-molecule sugars and acids initiated from another bacterial group (Anaeromyxobacter, Bdellovibrio, Conexibacter, Flavobacterium, and Gemmatimonas). Conclusion: These findings strongly suggest that shifts in a metabolite-mediated microbial community assembly process underpin the deterministic establishment of soilborne Fusarium wilt disease and reveal avenues for future research focusing on ameliorating crop loss due to this pathogen.
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