Abstract
Plant growth-promoting fungi (PGPF) are effective biocontrol agents for a number of soil-borne diseases and are known for their ability to trigger induced systemic resistance (ISR). In this study, we investigated the mechanisms triggered by PGPF Fusarium equiseti GF19-1, which is known to increase pathogen resistance in plants, by using GF19-1 spores and the culture filtrate (CF) to treat the roots of Arabidopsis thaliana. Subsequently, the leaves were challenged with Pseudomonas syringae pv tomato DC3000 (Pst) bacteria. Arabidopsis plants treated with GF19-1 spores or the CF elicited ISR against the Pst pathogen, resulting in a restriction of disease severity and suppression of pathogen proliferation. Examination of ISR in various signaling mutants and transgenic plants showed that GF19-1-induced protection was observed in the jasmonate response mutant jar1 and the ethylene response mutant etr1, whereas it was blocked in Arabidopsis plants expressing the NahG transgene or demonstrating a disruption of the NPR1 gene (npr1). Analysis of systemic gene expression revealed that GF19-1 modulates the expression of salicylic acid (SA)-responsive PR-1, PR-2, and PR-5 genes. Moreover, transient accumulation of SA was observed in GF19-1-treated plant, whereas the level was further enhanced after Pst infection of GF19-1-pretreated plants, indicating that accumulation of SA was potentiated when Arabidopsis plants were primed for disease resistance by GF19-1. In conclusion, these findings imply that the induced protective effect conferred by F. equiseti GF19-1 against the leaf pathogen Pst requires responsiveness to an SA-dependent pathway.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Arabidopsis plants treated with GF19-1 spores or culture filtrate elicited induced systemic resistance to Pst, restricting disease severity and suppressing pathogen proliferation.
- Taxon
- Arabidopsis
Arabidopsise1 - Treatment
- treated with GF19-1 spores or the CFe1
- Interactor
- Pste1pathogen
- Second interactor
- GF19-1e1biocontrol_agent
- Outcome
- disease severity and suppression of pathogen proliferatione1
- Direction
- restrictione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Arabidopsis plants treated with GF19-1 spores or the CF elicited ISR against the Pst pathogen, resulting in a restriction of disease severity and suppression of pathogen proliferation”
Claim · model-written summary
GF19-1-induced protection was still observed in the jasmonate response mutant jar1.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Material
- jar1e1
- Treatment
- GF19-1e1
- Interactor
- GF19-1e1biocontrol_agent
- Outcome
- protectione1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis thaliana”
e1“GF19-1-induced protection was observed in the jasmonate response mutant jar1”
Claim · model-written summary
GF19-1-induced protection was still observed in the ethylene response mutant etr1.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Material
- etr1e2
- Treatment
- GF19-1e1
- Interactor
- GF19-1e1biocontrol_agent
- Outcome
- protectione1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis thaliana”
e1“GF19-1-induced protection”
e2“the ethylene response mutant etr1”
Claim · model-written summary
GF19-1-induced protection was blocked in Arabidopsis plants expressing the NahG transgene.
- Taxon
- ArabidopsisArabidopsise2
- Treatment
- GF19-1e1
- Interactor
- GF19-1e1biocontrol_agent
- Gene
- NahGe2
- Outcome
- protectione1
- Direction
- blockede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“GF19-1-induced protection”
e2“it was blocked in Arabidopsis plants expressing the NahG transgene”
Claim · model-written summary
GF19-1-induced protection was blocked in Arabidopsis plants with a disruption of the NPR1 gene (npr1).
- Taxon
- ArabidopsisArabidopsise2
- Treatment
- GF19-1e1
- Interactor
- GF19-1e1biocontrol_agent
- Gene
- NPR1e2
- Outcome
- protectione1
- Direction
- blockede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“GF19-1-induced protection”
e2“it was blocked in Arabidopsis plants expressing the NahG transgene or demonstrating a disruption of the NPR1 gene (npr1)”
Claim · model-written summary
GF19-1 modulates the expression of the salicylic acid-responsive genes PR-1, PR-2 and PR-5 systemically in Arabidopsis.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- GF19-1e1
- Interactor
- GF19-1e1biocontrol_agent
- Gene
- PR-1, PR-2, and PR-5e1
- Outcome
- expressione1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis thaliana”
e1“GF19-1 modulates the expression of salicylic acid (SA)-responsive PR-1, PR-2, and PR-5 genes”
Claim · model-written summary
Transient accumulation of salicylic acid was observed in GF19-1-treated Arabidopsis plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- GF19-1-treatede1
- Outcome
- accumulation of SAe1
- Direction
- transient accumulatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis thaliana”
e1“transient accumulation of SA was observed in GF19-1-treated plant”
Claim · model-written summary
The salicylic acid level was further enhanced after Pst infection of GF19-1-pretreated plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- Pst infection of GF19-1-pretreated plantse1
- Interactor
- Pste1pathogen
- Outcome
- accumulation of SAe1
- Direction
- further enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis thaliana”
e1“transient accumulation of SA was observed in GF19-1-treated plant, whereas the level was further enhanced after Pst infection of GF19-1-pretreated plants”
Claim · model-written summary
The authors conclude that the protective effect of F. equiseti GF19-1 against the leaf pathogen Pst requires responsiveness to an SA-dependent pathway.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- F. equiseti GF19-1e1
- Interactor
- Pste1pathogen
- Second interactor
- F. equiseti GF19-1Fusarium equisetie1biocontrol_agent
- Outcome
- induced protective effecte1
- Qualifier
- SA-dependent pathwaye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arabidopsis thaliana”
e1“the induced protective effect conferred by F. equiseti GF19-1 against the leaf pathogen Pst requires responsiveness to an SA-dependent pathway”
The same questions in other papers
pathogen product · disease · ArabidopsisPositive and negative results
2 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
6 papers more in this group
See all 10 papers →infection · molecular: metabolites · Arabidopsis thaliana (thale cress)Positive and negative results
6 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- no effect
- no effect
9 papers more in this group
See all 13 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.