Abstract
Host-associated fungi can help protect plants from pathogens, and empirical evidence suggests that such microorganisms can be manipulated by introducing probiotic to increase disease suppression. However, we still generally lack the mechanistic knowledge of what determines the success of probiotic application, hampering the development of reliable disease suppression strategies. We conducted a three-season consecutive microcosm experiment in which we amended banana Fusarium wilt disease-conducive soil with Trichoderma-amended biofertilizer or lacking this inoculum. High-throughput sequencing was complemented with cultivation-based methods to follow changes in fungal microbiome and explore potential links with plant health. Trichoderma application increased banana biomass by decreasing disease incidence by up to 72%, and this effect was attributed to changes in fungal microbiome, including the reduction in Fusarium oxysporum density and enrichment of pathogen-suppressing fungi (Humicola). These changes were accompanied by an expansion in microbial carbon resource utilization potential, features that contribute to disease suppression. We further demonstrated the disease suppression actions of Trichoderma-Humicola consortia, and results suggest niche overlap with pathogen and induction of plant systemic resistance may be mechanisms driving the observed biocontrol effects. Together, we demonstrate that fungal inoculants can modify the composition and functioning of the resident soil fungal microbiome to suppress soilborne disease.
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Claims 8
Claim · model-written summary
Trichoderma application increased banana biomass.
- Taxon
- bananae0
- Treatment
- Trichoderma applicatione0
- Interactor
- Trichoderma
Trichodermae0biocontrol_agent - Outcome
- banana biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trichoderma application increased banana biomass by decreasing disease incidence by up to 72%”
Claim · model-written summary
Trichoderma application decreased banana disease incidence by up to 72%.
- Taxon
- bananae0
- Treatment
- Trichoderma applicatione0
- Second interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- disease incidencee0
- Direction
- decreasinge0
- Value
- up to 72%e0
FusariumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trichoderma application increased banana biomass by decreasing disease incidence by up to 72%”
e1“banana Fusarium wilt disease-conducive soil”
Claim · model-written summary
Trichoderma application was associated with reduced Fusarium oxysporum density.
- Taxon
- bananae0
- Treatment
- Trichoderma applicatione0
- Interactor
- Fusarium oxysporum
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=60)
Fusarium oxysporume0pathogen - Second interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- Fusarium oxysporum densitye0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=500)
Verbatim
e0“Trichoderma application increased banana biomass by decreasing disease incidence by up to 72%, and this effect was attributed to changes in fungal microbiome, including the reduction in Fusarium oxysporum density”
Claim · model-written summary
Trichoderma application enriched pathogen-suppressing Humicola fungi.
- Taxon
- bananae0
- Treatment
- Trichoderma applicatione0
- Second interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- pathogen-suppressing fungi (Humicola)e0
- Direction
- enrichmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trichoderma application increased banana biomass by decreasing disease incidence by up to 72%, and this effect was attributed to changes in fungal microbiome, including the reduction in Fusarium oxysporum density and enrichment of pathogen-suppressing fungi (Humicola)”
Claim · model-written summary
Fungal-community changes accompanied an expansion of microbial carbon resource utilization potential.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These changes were accompanied by an expansion in microbial carbon resource utilization potential”
e1“banana Fusarium wilt disease-conducive soil”
Claim · model-written summary
Trichoderma-Humicola consortia suppressed banana disease.
- Taxon
- bananae1
- Second interactor
- Trichoderma-Humicola consortiae0biocontrol_agent
- Outcome
- disease suppression actionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“demonstrated the disease suppression actions of Trichoderma-Humicola consortia”
e1“banana Fusarium wilt disease-conducive soil”
Claim · model-written summary
The authors suggest niche overlap with the pathogen and induction of plant systemic resistance as possible biocontrol mechanisms.
- Taxon
- bananae1
- Outcome
- observed biocontrol effectse0
- Qualifier
- niche overlap with pathogen and induction of plant systemic resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“results suggest niche overlap with pathogen and induction of plant systemic resistance may be mechanisms driving the observed biocontrol effects”
e1“banana Fusarium wilt disease-conducive soil”
Claim · model-written summary
Fungal inoculants modified resident soil fungal microbiome composition and functioning to suppress soilborne disease.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fungal inoculants can modify the composition and functioning of the resident soil fungal microbiome to suppress soilborne disease”
e1“banana Fusarium wilt disease-conducive soil”
The same questions in other papers
Trichoderma · Fusarium · MusaResults agree
1 paper in the same direction as this paper
- positive
Trichoderma · growth · MusaResults agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →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.