Abstract
Abstract Interspecific interactions including plant–plant, plant–microbe, and plant–insect are the important elements to drive the positive plant–soil feedback for maintaining ecosystem stability in biodiversity ecosystems. Yet, the role of diversified foliar pathogens in biodiversity system in influencing the plant–soil feedback (PSF) has often been underestimated. Here, we assessed the effects of foliar Alternaria panax pathogenicity diversity from agroforestry system on PSF and rhizosphere microbial community. We show that a moderate intensity of foliar pathogen infection by A. panax could activate jasmonic acid (JA)-mediated defense from shoots to roots. This activation enhanced the synthesis and secretion of 2-aminoethanesulfonic acid into the rhizosphere for a disease-suppressive rhizo-microbiota assembly, contributing to positive PSF. However, excessive foliar pathogen infection allocated JA-mediated defense only in leaf and disrupted this rhizomicrobial enrichment, resulting negative PSF. This study enhances the understanding of the ecological roles of foliar pathogen within agroforestry systems and provides an insight into agricultural sustainability.
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Claims 6
Claim · model-written summary
Moderate A. panax foliar infection could activate JA-mediated shoot-to-root defense.
- Taxon
- plantt0
- Interactor
- A. panaxAlternaria panaxe0pathogen
- Outcome
- defense from shoots to rootse0
- Qualifier
- jasmonic acid (JA)-mediatede0
Verbatim
t0“plant–soil feedbacks”
e0“a moderate intensity of foliar pathogen infection by A. panax could activate jasmonic acid (JA)-mediated defense from shoots to roots.”
Claim · model-written summary
The defense activation enhanced synthesis and secretion of 2-aminoethanesulfonic acid into the rhizosphere.
Verbatim
t0“plant–soil feedbacks”
e0“This activation enhanced the synthesis and secretion of 2-aminoethanesulfonic acid into the rhizosphere for a disease-suppressive rhizo-microbiota assembly, contributing to positive PSF.”
Claim · model-written summary
The secretion contributed to disease-suppressive rhizomicrobiota and positive plant–soil feedback.
Verbatim
t0“plant–soil feedbacks”
e0“This activation enhanced the synthesis and secretion of 2-aminoethanesulfonic acid into the rhizosphere for a disease-suppressive rhizo-microbiota assembly, contributing to positive PSF.”
Claim · model-written summary
Excessive foliar infection confined JA-mediated defense to leaves.
Verbatim
t0“plant–soil feedbacks”
e0“excessive foliar pathogen infection allocated JA-mediated defense only in leaf and disrupted this rhizomicrobial enrichment, resulting negative PSF.”
Claim · model-written summary
Excessive foliar infection disrupted rhizomicrobial enrichment.
Verbatim
t0“plant–soil feedbacks”
e0“excessive foliar pathogen infection allocated JA-mediated defense only in leaf and disrupted this rhizomicrobial enrichment, resulting negative PSF.”
Claim · model-written summary
Excessive foliar infection resulted in negative plant–soil feedback.
Verbatim
t0“plant–soil feedbacks”
e0“excessive foliar pathogen infection allocated JA-mediated defense only in leaf and disrupted this rhizomicrobial enrichment, resulting negative PSF.”