Abstract
Auxin signalling and transport participate in plant–microbe interactions as positive or negative regulators of disease resistance. The present study investigated the responses of Arabidopsis thaliana plants impaired in the auxin receptors TIR 1, AFB 1 and AFB 3 and the auxin transporter AXR 4, upon infection by the soilborne root pathogen Verticillium dahliae . Fewer symptoms were recorded in afb1 , afb3 and axr4 plants compared to the wild type (wt). qPCR analysis revealed that the decrease in symptom severity in afb1 , afb3 and axr4 was correlated with reduction in the growth of the pathogen in the plants. Therefore, afb1 , afb3 and axr4 are partially resistant to V. dahliae . Upon V. dahliae infection, the expression of TIR 1 , AFB 1 , AFB 3 and AXR 4 was up‐regulated in roots, while indole‐3‐acetic acid levels were similar to mocks. The partial resistance of afb1 , afb3 and axr4 against V. dahliae can be attributed in part to the up‐regulation of defence‐related genes, as it was observed that afb1 and axr4 had higher PR 1 levels than wt, while afb3 had higher PDF 1.2 levels than wt. The findings of the present study suggest that the auxin signalling defective mutants afb1 , afb3 and axr4 show increased resistance against V. dahliae .
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Claims 10
Claim · model-written summary
Arabidopsis afb1 plants showed fewer symptoms of Verticillium dahliae infection than the wild type.
- Taxon
- Arabidopsis
Arabidopsist0 - Interactor
- Verticillium dahliae
Verticillium dahliaet1pathogen - Gene
- afb1e0
- Outcome
- symptomse0
- Direction
- Fewere0
- Comparator
- the wild type (wt)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
t1“Verticillium dahliae”
e0“Fewer symptoms were recorded in afb1 , afb3 and axr4 plants compared to the wild type (wt)”
Claim · model-written summary
Arabidopsis afb3 plants showed fewer symptoms of Verticillium dahliae infection than the wild type.
- Taxon
- ArabidopsisArabidopsist0
- Interactor
- Verticillium dahliaeVerticillium dahliaet1pathogen
- Gene
- afb3e0
- Outcome
- symptomse0
- Direction
- Fewere0
- Comparator
- the wild type (wt)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
t1“Verticillium dahliae”
e0“Fewer symptoms were recorded in afb1 , afb3 and axr4 plants compared to the wild type (wt)”
Claim · model-written summary
Arabidopsis axr4 plants showed fewer symptoms of Verticillium dahliae infection than the wild type.
- Taxon
- ArabidopsisArabidopsist0
- Interactor
- Verticillium dahliaeVerticillium dahliaet1pathogen
- Gene
- axr4e0
- Outcome
- symptomse0
- Direction
- Fewere0
- Comparator
- the wild type (wt)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
t1“Verticillium dahliae”
e0“Fewer symptoms were recorded in afb1 , afb3 and axr4 plants compared to the wild type (wt)”
Claim · model-written summary
The decrease in symptom severity in afb1, afb3 and axr4 plants was correlated with reduced growth of the pathogen in the plants (qPCR).
- Taxon
- ArabidopsisArabidopsist0
- Interactor
- Verticillium dahliaeVerticillium dahliaet1pathogen
- Gene
- afb1 , afb3 and axr4e0
- Outcome
- growth of the pathogene0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
t1“Verticillium dahliae”
e0“the decrease in symptom severity in afb1 , afb3 and axr4 was correlated with reduction in the growth of the pathogen in the plants”
Claim · model-written summary
Upon V. dahliae infection, expression of TIR1, AFB1, AFB3 and AXR4 was up-regulated in Arabidopsis roots.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- rootse0
- Interactor
- V. dahliaeVerticillium dahliaee0pathogen
- Gene
- TIR 1 , AFB 1 , AFB 3 and AXR 4e0
- Outcome
- expressione0
- Direction
- up‐regulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e0“Upon V. dahliae infection, the expression of TIR 1 , AFB 1 , AFB 3 and AXR 4 was up‐regulated in roots”
Claim · model-written summary
Indole-3-acetic acid levels in Arabidopsis were similar to mock-inoculated plants upon V. dahliae infection.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- V. dahliae infectione0
- Interactor
- V. dahliaeVerticillium dahliaee0pathogen
- Outcome
- indole‐3‐acetic acid levelse0
- Direction
- similar to mockse0
- Comparator
- mockse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e0“Upon V. dahliae infection, the expression of TIR 1 , AFB 1 , AFB 3 and AXR 4 was up‐regulated in roots, while indole‐3‐acetic acid levels were similar to mocks”
Claim · model-written summary
afb1 and axr4 plants had higher PR1 levels than the wild type after infection.
- Taxon
- ArabidopsisArabidopsist0
- Material
- afb1 and axr4e0
- Gene
- PR 1e0
- Outcome
- PR 1 levelse0
- Direction
- highere0
- Comparator
- wte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e0“afb1 and axr4 had higher PR 1 levels than wt”
Claim · model-written summary
afb3 plants had higher PDF1.2 levels than the wild type after infection.
- Taxon
- ArabidopsisArabidopsist0
- Material
- afb3e0
- Gene
- PDF 1.2e0
- Outcome
- PDF 1.2 levelse0
- Direction
- highere0
- Comparator
- wte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e0“afb3 had higher PDF 1.2 levels than wt”
Claim · model-written summary
The afb1, afb3 and axr4 mutants are partially resistant to V. dahliae.
- Taxon
- ArabidopsisArabidopsist0
- Material
- afb1 , afb3 and axr4e0
- Interactor
- V. dahliaeVerticillium dahliaee0pathogen
- Outcome
- partially resistant to V. dahliaee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e0“afb1 , afb3 and axr4 are partially resistant to V. dahliae”
Claim · model-written summary
The authors attribute the partial resistance of afb1, afb3 and axr4 against V. dahliae in part to up-regulation of defence-related genes.
- Taxon
- ArabidopsisArabidopsist0
- Material
- afb1 , afb3 and axr4e0
- Interactor
- V. dahliaeVerticillium dahliaee0pathogen
- Gene
- defence‐related genese0
- Outcome
- partial resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e0“The partial resistance of afb1 , afb3 and axr4 against V. dahliae can be attributed in part to the up‐regulation of defence‐related genes”
The same questions in other papers
infection · physiology: hormones · ArabidopsisResults agree
4 papers in the same direction as this paper
- no effect
- no effect
- no effect
1 paper more in this group
See all 5 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.