Abstract
Summary Below‐ground microbes can induce systemic resistance against foliar pests and pathogens on diverse plant hosts. The prevalence of induced systemic resistance (ISR) among plant‐microbe‐pest systems raises the question of host specificity in microbial induction of ISR. To test whether ISR is limited by plant host range , we tested the ISR‐inducing ectomycorrhizal fungus Laccaria bicolor on the nonmycorrhizal plant Arabidopsis thaliana . We used the cabbage looper Trichoplusia ni and bacterial pathogen Pseudomonas syringae pv. tomato DC3000 ( Pto ) as readouts for ISR on Arabidopsis . We found that root inoculation with L. bicolor triggered ISR against T. ni and induced systemic susceptibility (ISS) against the bacterial pathogen Pto . We found that L. bicolor‐ triggered ISR against T. ni was dependent on jasmonic acid signaling and salicylic acid biosynthesis and signaling. Heat‐killed L. bicolor and chitin were sufficient to trigger ISR against T. ni and ISS against Pto . The chitin receptor CERK1 was necessary for L. bicolor‐ mediated effects on systemic immunity. Collectively our findings suggest that some ISR responses might not require intimate symbiotic association, but rather might be the result of root perception of conserved microbial signals.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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
Root inoculation with L. bicolor induced resistance to T. ni in Arabidopsis.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- root inoculation with L. bicolore0
- Interactor
- T. nie0pest
- Second interactor
- L. bicolor
_P.D._Orton_270921_crop.jpg?width=60)
Laccaria bicolore0symbiont - Outcome
- ISR against T. nie0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_P.D._Orton_270921_crop.jpg?width=500)
Verbatim
e0“root inoculation with L. bicolor triggered ISR against T. ni”
t0“nonmycorrhizal plant Arabidopsis thaliana”
Claim · model-written summary
Root inoculation with L. bicolor induced susceptibility to Pto.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- root inoculation with L. bicolore0
- Interactor
- Ptoe0pathogen
- Second interactor
- L. bicolorLaccaria bicolore0symbiont
- Outcome
- systemic susceptibility (ISS) against the bacterial pathogen Ptoe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root inoculation with L. bicolor triggered ISR against T. ni and induced systemic susceptibility (ISS) against the bacterial pathogen Pto”
t0“nonmycorrhizal plant Arabidopsis thaliana”
Claim · model-written summary
L. bicolor induced resistance to T. ni depended on jasmonic acid signaling and salicylic acid biosynthesis and signaling.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Interactor
- T. nie0pest
- Second interactor
- L. bicolorLaccaria bicolore0symbiont
- Compound
- jasmonic acide0
- Outcome
- ISR against T. nie0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“L. bicolor‐ triggered ISR against T. ni was dependent on jasmonic acid signaling and salicylic acid biosynthesis and signaling”
t0“nonmycorrhizal plant Arabidopsis thaliana”
Claim · model-written summary
Heat-killed L. bicolor triggered resistance to T. ni.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Heat‐killed L. bicolore0
- Interactor
- T. nie0pest
- Second interactor
- L. bicolorLaccaria bicolore0symbiont
- Outcome
- ISR against T. nie0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat‐killed L. bicolor and chitin were sufficient to trigger ISR against T. ni”
t0“nonmycorrhizal plant Arabidopsis thaliana”
Claim · model-written summary
Chitin triggered resistance to T. ni.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- chitine0
- Interactor
- T. nie0pest
- Outcome
- ISR against T. nie0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat‐killed L. bicolor and chitin were sufficient to trigger ISR against T. ni”
t0“nonmycorrhizal plant Arabidopsis thaliana”
Claim · model-written summary
Heat-killed L. bicolor triggered susceptibility to Pto.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Heat‐killed L. bicolore0
- Interactor
- Ptoe0pathogen
- Second interactor
- L. bicolorLaccaria bicolore0symbiont
- Outcome
- ISS against Ptoe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat‐killed L. bicolor and chitin were sufficient to trigger ISR against T. ni and ISS against Pto”
t0“nonmycorrhizal plant Arabidopsis thaliana”
Claim · model-written summary
Chitin triggered susceptibility to Pto.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- chitine0
- Interactor
- Ptoe0pathogen
- Outcome
- ISS against Ptoe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat‐killed L. bicolor and chitin were sufficient to trigger ISR against T. ni and ISS against Pto”
t0“nonmycorrhizal plant Arabidopsis thaliana”
Claim · model-written summary
CERK1 was necessary for L. bicolor mediated systemic immunity.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Interactor
- L. bicolorLaccaria bicolore0symbiont
- Gene
- CERK1e0
- Outcome
- systemic immunitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chitin receptor CERK1 was necessary for L. bicolor‐ mediated effects on systemic immunity”
t0“nonmycorrhizal plant Arabidopsis thaliana”
Claim · model-written summary
The authors infer that some induced resistance can arise from root perception of conserved microbial signals without intimate symbiosis.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- ISR responsese0
- Qualifier
- root perception of conserved microbial signalse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some ISR responses might not require intimate symbiotic association, but rather might be the result of root perception of conserved microbial signals”
t0“nonmycorrhizal plant Arabidopsis thaliana”
The same questions in other papers
resistance inducer · disease · Arabidopsis thaliana (thale cress)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
2 papers more in this group
See all 6 papers →heat · disease · Arabidopsis thaliana (thale cress)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- no effect
4 papers more in this group
See all 8 papers →inoculation · disease · Arabidopsis thaliana (thale cress)Positive and negative results
12 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
15 papers more in this group
See all 19 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.