Abstract
Given the substantial costs of plant defenses against pathogens, there should be corresponding benefits that prevent resistance from being lost in natural plant populations. Here, we present evidence that systemic acquired resistance (SAR) benefits plants attacked by pathogenic bacteria in nature. In a large field experiment, we found that Arabidopsis thaliana treated with salicylic acid exhibited reduced titers of bacteria in their leaves and elevated fitness relative to controls. Most common members of the culturable bacterial community suffered this decrease, consistent with the role of SAR as a broad spectrum defense. We found no evidence of negative interactions between SAR and jasmonate-dependent resistance. Plants treated with jasmonic acid received significantly lower insect damage to their siliques, but exhibited no differences in bacterial growth or fitness relative to controls. Collectively, these data suggest a likely role of pathogenic bacteria in the maintenance of SAR, but not jasmonate-dependent resistance, in nature.
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Claims 7
Claim · model-written summary
Salicylic acid treatment reduced bacterial titers in the leaves of Arabidopsis thaliana in a large field experiment.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae1 - Treatment
- salicylic acide1
- Interactor
- pathogenic bacteriae2pathogen
- Outcome
- titers of bacteria in their leavese1
- Direction
- reducede1
- Comparator
- controlse1
- Setting
- large field experimente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In a large field experiment, we found that Arabidopsis thaliana treated with salicylic acid exhibited reduced titers of bacteria in their leaves and elevated fitness relative to controls”
e2“benefits plants attacked by pathogenic bacteria in nature”
Claim · model-written summary
Salicylic acid treatment increased the fitness of Arabidopsis thaliana relative to controls in a large field experiment.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- salicylic acide1
- Outcome
- fitnesse1
- Direction
- elevatede1
- Comparator
- controlse1
- Setting
- large field experimente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In a large field experiment, we found that Arabidopsis thaliana treated with salicylic acid exhibited reduced titers of bacteria in their leaves and elevated fitness relative to controls”
Claim · model-written summary
Salicylic acid decreased the most common members of the culturable bacterial community on Arabidopsis thaliana.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- salicylic acide1
- Interactor
- culturable bacterial communitye3other
- Outcome
- Most common members of the culturable bacterial communitye3
- Direction
- decreasee3
- Comparator
- controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In a large field experiment, we found that Arabidopsis thaliana treated with salicylic acid exhibited reduced titers of bacteria in their leaves and elevated fitness relative to controls”
e3“Most common members of the culturable bacterial community suffered this decrease”
Claim · model-written summary
No evidence of negative interactions between SAR and jasmonate-dependent resistance was found in Arabidopsis thaliana.
- Taxon
- ARABIDOPSIS THALIANAArabidopsis thalianat1
- Compound
- jasmonatee4
- Outcome
- negative interactions between SAR and jasmonate-dependent resistancee4
- Direction
- no_changeinferrede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“ARABIDOPSIS THALIANA”
e4“We found no evidence of negative interactions between SAR and jasmonate-dependent resistance”
Claim · model-written summary
Jasmonic acid treatment significantly lowered insect damage to the siliques of Arabidopsis thaliana relative to controls.
- Taxon
- ARABIDOPSIS THALIANAArabidopsis thalianat1
- Treatment
- jasmonic acide5
- Interactor
- insecte5pest
- Outcome
- insect damage to their siliquese5
- Direction
- lowere5
- Comparator
- controlse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“ARABIDOPSIS THALIANA”
e5“Plants treated with jasmonic acid received significantly lower insect damage to their siliques, but exhibited no differences in bacterial growth or fitness relative to controls”
Claim · model-written summary
Jasmonic acid treatment showed no differences in bacterial growth or fitness relative to controls.
- Taxon
- ARABIDOPSIS THALIANAArabidopsis thalianat1
- Treatment
- jasmonic acide5
- Outcome
- bacterial growth or fitnesse5
- Direction
- no differencese5
- Comparator
- controlse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“ARABIDOPSIS THALIANA”
e5“Plants treated with jasmonic acid received significantly lower insect damage to their siliques, but exhibited no differences in bacterial growth or fitness relative to controls”
Claim · model-written summary
Pathogenic bacteria likely help maintain SAR, but not jasmonate-dependent resistance, in Arabidopsis thaliana in nature.
- Taxon
- ARABIDOPSIS THALIANAArabidopsis thalianat1
- Interactor
- pathogenic bacteriae6pathogen
- Outcome
- maintenance of SARe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“ARABIDOPSIS THALIANA”
e6“Collectively, these data suggest a likely role of pathogenic bacteria in the maintenance of SAR, but not jasmonate-dependent resistance, in nature”
The same questions in other papers
jasmonic acid · disease · Arabidopsis thaliana (thale cress)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
salicylic acid · soil: biology · Arabidopsis thaliana (thale cress)Results agree
1 paper in the same direction as this paper
- positive
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.