Abstract
) to investigate how cultivar-specific variation influences rhizosphere microbial communities and their assembly processes. Rhizosphere soil microbiomes (bacterial and fungal communities) and metabolomes were characterized using 16S rRNA and ITS2 amplicon sequencing combined with untargeted metabolomics. Significant differences in rhizosphere metabolite composition, primarily organic acids, fatty acids, and carbohydrates, were observed among cultivars, which corresponded to distinct bacterial and fungal community structures. Redundancy analysis (RDA) revealed that rhizosphere metabolites explained 19.87% of bacterial and 21.63% of fungal community compositional variation, second only to soil physicochemical properties. Neutral community model and modified stochasticity ratio analyses indicated that microbial assembly across cultivars was predominantly deterministic, and rhizosphere metabolite profiles were strongly correlated with microbial community structure. Notably, arbuscular mycorrhizal fungi made up about 11% of the fungal communities in minimally fertilized pot systems, contrasting sharply with their near-absence in conventionally managed systems plantations. These findings demonstrate that tea cultivar genotype significantly shapes rhizosphere microbiome assembly through metabolic differentiation, providing a theoretical foundation for integrating microbiome considerations into tea breeding programs and developing cultivar-specific management strategies.
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Claims 11
Claim · model-written summary
Rhizosphere metabolite composition differed significantly among tea cultivars.
Verbatim
e0“Significant differences in rhizosphere metabolite composition, primarily organic acids, fatty acids, and carbohydrates, were observed among cultivars”
t0“Tea”
Claim · model-written summary
Bacterial community structures differed among cultivars.
Verbatim
e0“which corresponded to distinct bacterial and fungal community structures”
t0“Tea”
Claim · model-written summary
Fungal community structures differed among cultivars.
Verbatim
e0“which corresponded to distinct bacterial and fungal community structures”
t0“Tea”
Claim · model-written summary
Rhizosphere metabolites explained 19.87% of bacterial community composition variation.
- Taxon
- Teat0
- Interactor
- bacteriale0symbiont
- Compound
- rhizosphere metabolitese0
- Outcome
- bacterial and 21.63% of fungal community compositional variatione0
- Value
- 19.87%e0
Not reportedDirection
Verbatim
e0“rhizosphere metabolites explained 19.87% of bacterial and 21.63% of fungal community compositional variation”
t0“Tea”
Claim · model-written summary
Rhizosphere metabolites explained 21.63% of fungal community composition variation.
- Taxon
- Teat0
- Interactor
- fungale0symbiont
- Compound
- rhizosphere metabolitese0
- Outcome
- fungal community compositional variatione0
- Value
- 21.63%e0
Not reportedDirection
Verbatim
e0“rhizosphere metabolites explained 19.87% of bacterial and 21.63% of fungal community compositional variation”
t0“Tea”
Claim · model-written summary
Microbial assembly across cultivars was predominantly deterministic.
Verbatim
e0“microbial assembly across cultivars was predominantly deterministic”
t0“Tea”
Claim · model-written summary
Rhizosphere metabolite profiles were strongly correlated with microbial community structure.
- Taxon
- Teat0
- Interactor
- microbiale0symbiont
- Compound
- rhizosphere metabolite profilese0
- Outcome
- microbial community structuree0
Not reportedDirection
Verbatim
e0“rhizosphere metabolite profiles were strongly correlated with microbial community structure”
t0“Tea”
Claim · model-written summary
Arbuscular mycorrhizal fungi made up about 11% of fungi in minimally fertilized pot systems.
Verbatim
e0“arbuscular mycorrhizal fungi made up about 11% of the fungal communities in minimally fertilized pot systems”
t0“Tea”
Claim · model-written summary
Arbuscular mycorrhizal fungi were nearly absent in conventionally managed plantations.
Verbatim
e0“arbuscular mycorrhizal fungi made up about 11% of the fungal communities in minimally fertilized pot systems, contrasting sharply with their near-absence in conventionally managed systems plantations”
t0“Tea”
Claim · model-written summary
The authors concluded that tea cultivar genotype shapes rhizosphere microbiome assembly through metabolic differentiation.
Verbatim
e0“tea cultivar genotype significantly shapes rhizosphere microbiome assembly through metabolic differentiation”
Claim · model-written summary
The authors propose incorporating microbiome considerations into tea breeding and cultivar-specific management.
Verbatim
e0“integrating microbiome considerations into tea breeding programs and developing cultivar-specific management strategies”
t0“Tea”