Abstract
BACKGROUND: Soil nutrient status and soil-borne diseases are pivotal factors impacting modern intensive agricultural production. The interplay among plants, soil microbiome, and nutrient regimes in agroecosystems is essential for developing effective disease management. However, the influence of nutrient availability on soil-borne disease suppression and associated plant-microbe interactions remains to be fully explored. T his study aims to elucidate the mechanistic understanding of nutrient impacts on disease suppression, using phosphorous as a target nutrient. RESULTS: A 6-year field trial involving monocropping of tomatoes with varied fertilizer manipulations demonstrated that phosphorus availability is a key factor driving the control of bacterial wilt disease caused by Ralstonia solanacearum. Subsequent greenhouse experiments were then conducted to delve into the underlying mechanisms of this phenomenon by varying phosphorus availability for tomatoes challenged with the pathogen. Results showed that the alleviation of phosphorus stress promoted the disease-suppressive capacity of the rhizosphere microbiome, but not that of the bulk soil microbiome. This appears to be an extension of the plant trade-off between investment in disease defense mechanisms versus phosphorus acquisition. Adequate phosphorus levels were associated with elevated secretion of root metabolites such as L-tryptophan, methoxyindoleacetic acid, O-phosphorylethanolamine, or mangiferin, increasing the relative density of microbial biocontrol populations such as Chryseobacterium in the rhizosphere. On the other hand, phosphorus deficiency triggered an alternate defense strategy, via root metabolites like blumenol A or quercetin to form symbiosis with arbuscular mycorrhizal fungi, which facilitated phosphorus acquisition as well. CONCLUSION: Overall, our study shows how phosphorus availability can influence the disease suppression capability of the soil microbiome through plant-microbial interactions. These findings highlight the importance of optimizing nutrient regimes to enhance disease suppression, facilitating targeted crop management and boosting agricultural productivity. Video Abstract.
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Claims 7
Claim · model-written summary
Phosphorus availability was a key factor in control of tomato bacterial wilt caused by Ralstonia solanacearum.
- Taxon
- tomatoes
Solanum lycopersicume1 - Treatment
- phosphorus availabilitye0
- Interactor
- Ralstonia solanacearum
Ralstonia solanacearume0pathogen - Outcome
- control of bacterial wilt diseasee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“monocropping of tomatoes”
e0“phosphorus availability is a key factor driving the control of bacterial wilt disease caused by Ralstonia solanacearum.”
Claim · model-written summary
Alleviating phosphorus stress increased disease suppressive capacity of the tomato rhizosphere microbiome.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- alleviation of phosphorus stresse0
- Outcome
- disease-suppressive capacity of the rhizosphere microbiomee0
- Direction
- promotede0
- Comparator
- bulk soil microbiomee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“monocropping of tomatoes”
e0“the alleviation of phosphorus stress promoted the disease-suppressive capacity of the rhizosphere microbiome, but not that of the bulk soil microbiome.”
Claim · model-written summary
Alleviating phosphorus stress did not promote disease suppressive capacity of the bulk soil microbiome.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- alleviation of phosphorus stresse0
- Outcome
- that of the bulk soil microbiomee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“monocropping of tomatoes”
e0“the alleviation of phosphorus stress promoted the disease-suppressive capacity of the rhizosphere microbiome, but not that of the bulk soil microbiome.”
Claim · model-written summary
Adequate phosphorus was associated with elevated secretion of four named tomato root metabolites.
- Taxon
- tomatoesSolanum lycopersicume1
- Organ / stage
- roote0
- Treatment
- Adequate phosphorus levelse0
- Outcome
- elevated secretion of root metabolites such as L-tryptophan, methoxyindoleacetic acid, O-phosphorylethanolamine, or mangiferine0
- Direction
- elevatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“monocropping of tomatoes”
e0“Adequate phosphorus levels were associated with elevated secretion of root metabolites such as L-tryptophan, methoxyindoleacetic acid, O-phosphorylethanolamine, or mangiferin, increasing the relative density of microbial biocontrol populations such as Chryseobacterium in the rhizosphere.”
Claim · model-written summary
Adequate phosphorus and root metabolite secretion were associated with increased Chryseobacterium density in the tomato rhizosphere.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- Adequate phosphorus levelse0
- Interactor
- Chryseobacterium
Chryseobacteriume0biocontrol_agent - Outcome
- relative density of microbial biocontrol populations such as Chryseobacteriume0
- Direction
- increasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“monocropping of tomatoes”
e0“Adequate phosphorus levels were associated with elevated secretion of root metabolites such as L-tryptophan, methoxyindoleacetic acid, O-phosphorylethanolamine, or mangiferin, increasing the relative density of microbial biocontrol populations such as Chryseobacterium in the rhizosphere.”
Claim · model-written summary
Phosphorus deficiency induced a tomato defense strategy involving blumenol A or quercetin and arbuscular mycorrhizal symbiosis.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- phosphorus deficiencye0
- Interactor
- arbuscular mycorrhizal fungie0symbiont
- Outcome
- alternate defense strategye0
- Qualifier
- root metabolites like blumenol A or quercetine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“monocropping of tomatoes”
e0“phosphorus deficiency triggered an alternate defense strategy, via root metabolites like blumenol A or quercetin to form symbiosis with arbuscular mycorrhizal fungi, which facilitated phosphorus acquisition as well.”
Claim · model-written summary
Arbuscular mycorrhizal symbiosis facilitated phosphorus acquisition under deficiency.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- phosphorus deficiencye0
- Interactor
- arbuscular mycorrhizal fungie0symbiont
- Outcome
- phosphorus acquisitione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“monocropping of tomatoes”
e0“phosphorus deficiency triggered an alternate defense strategy, via root metabolites like blumenol A or quercetin to form symbiosis with arbuscular mycorrhizal fungi, which facilitated phosphorus acquisition as well.”
The same questions in other papers
phosphorus · soil: biology · Solanum lycopersicum (tomato)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
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.