Abstract
The use of microbial inoculant is a promising strategy to improve plant health, but their efficiency often faces challenges due to difficulties in successful microbial colonization in soil environments. To this end, the application of biostimulation products derived from microbes is expected to resolve these barriers via direct interactions with plants or soil pathogens. However, their effectiveness and mechanisms for promoting plant growth and disease resistance remain elusive. In this study, we showed that root irrigation with the extracts of Streptomyces ahygroscopicus strain 769 (S769) solid fermentation products significantly reduced watermelon Fusarium wilt disease incidence by 30% and increased the plant biomass by 150% at a fruiting stage in a continuous cropping field. S769 treatment led to substantial changes in both bacterial and fungal community compositions, and induced a highly interconnected microbial association network in the rhizosphere. The root transcriptome analysis further suggested that S769 treatment significantly improved the expression of the MAPK signalling pathway, plant hormone signal transduction and plant-pathogen interactions, particular those genes related to PR-1 and ethylene, as well as genes associated with auxin production and reception. Together, our study provides mechanistic and empirical evidences for the biostimulation products benefiting plant health through coordinating plant and rhizosphere microbiome interaction.
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Claims 10
Claim · model-written summary
S769 extracts reduced watermelon Fusarium wilt incidence by 30% in a continuous-cropping field.
- Taxon
- watermelon
Citrullus lanatuse0 - Organ / stage
- fruiting stagee0
- Treatment
- root irrigation with the extracts of Streptomyces ahygroscopicus strain 769 (S769) solid fermentation productse0
- Second interactor
- Streptomyces ahygroscopicus strain 769 (S769)Streptomyces ahygroscopicuse0biocontrol_agent
- Outcome
- Fusarium wilt disease incidencee0
- Direction
- reducede0
- Value
- 30%e0
- Setting
- continuous cropping fielde0
FusariumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root irrigation with the extracts of Streptomyces ahygroscopicus strain 769 (S769) solid fermentation products significantly reduced watermelon Fusarium wilt disease incidence by 30% and increased the plant biomass by 150% at a fruiting stage in a continuous cropping field”
Claim · model-written summary
S769 extracts increased watermelon biomass by 150% at fruiting.
- Taxon
- watermelonCitrullus lanatuse0
- Organ / stage
- fruiting stagee0
- Treatment
- root irrigation with the extracts of Streptomyces ahygroscopicus strain 769 (S769) solid fermentation productse0
- Interactor
- Streptomyces ahygroscopicus strain 769 (S769)Streptomyces ahygroscopicuse0biocontrol_agent
- Outcome
- plant biomasse0
- Direction
- increasede0
- Value
- 150%e0
- Setting
- continuous cropping fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root irrigation with the extracts of Streptomyces ahygroscopicus strain 769 (S769) solid fermentation products significantly reduced watermelon Fusarium wilt disease incidence by 30% and increased the plant biomass by 150% at a fruiting stage in a continuous cropping field”
Claim · model-written summary
S769 treatment changed bacterial rhizosphere community composition.
Not reportedTaxonComparator
Verbatim
e0“S769 treatment led to substantial changes in both bacterial and fungal community compositions, and induced a highly interconnected microbial association network in the rhizosphere”
Claim · model-written summary
S769 treatment changed fungal rhizosphere community composition.
- Organ / stage
- rhizospheree0
- Treatment
- S769 treatmente0
- Outcome
- fungal community compositionse0
- Direction
- changese0
Not reportedTaxonComparator
Verbatim
e0“S769 treatment led to substantial changes in both bacterial and fungal community compositions, and induced a highly interconnected microbial association network in the rhizosphere”
Claim · model-written summary
S769 treatment induced a highly interconnected rhizosphere microbial network.
- Organ / stage
- rhizospheree0
- Treatment
- S769 treatmente0
- Outcome
- highly interconnected microbial association networke0
Not reportedTaxonComparatorDirection
Verbatim
e0“S769 treatment led to substantial changes in both bacterial and fungal community compositions, and induced a highly interconnected microbial association network in the rhizosphere”
Claim · model-written summary
S769 treatment increased MAPK signaling pathway expression.
Not reportedTaxonComparator
Verbatim
e0“S769 treatment significantly improved the expression of the MAPK signalling pathway, plant hormone signal transduction and plant-pathogen interactions”
Claim · model-written summary
S769 treatment increased plant hormone signal transduction expression.
Not reportedTaxonComparator
Verbatim
e0“S769 treatment significantly improved the expression of the MAPK signalling pathway, plant hormone signal transduction and plant-pathogen interactions”
Claim · model-written summary
S769 treatment increased plant-pathogen interaction expression.
Not reportedTaxonComparator
Verbatim
e0“S769 treatment significantly improved the expression of the MAPK signalling pathway, plant hormone signal transduction and plant-pathogen interactions”
Claim · model-written summary
The expression response involved PR-1 and ethylene-related genes.
Not reportedTaxon
Verbatim
e0“particular those genes related to PR-1 and ethylene, as well as genes associated with auxin production and reception”
Claim · model-written summary
The expression response involved genes for auxin production and reception.
- Outcome
- genes associated with auxin production and receptione0
Not reportedTaxon
Verbatim
e0“genes associated with auxin production and reception”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.