Abstract
Induced systemic resistance (ISR) is a process elicited by telluric microbes, referred to as plant growth-promoting rhizobacteria (PGPR), that protect the host plant against pathogen attacks. ISR has been defined from studies using Pseudomonas strains as the biocontrol agent. Here, we show for the first time that a photosynthetic Bradyrhizobium sp. strain, ORS278, also exhibits the ability to promote ISR in Arabidopsis thaliana, indicating that the ISR effect may be a widespread ability. To investigate the molecular bases of this response, we performed a transcriptome analysis designed to reveal the changes in gene expression induced by the PGPR, the pathogen alone, or by both. The results confirm the priming pattern of ISR described previously, meaning that a set of genes, of which the majority was predicted to be influenced by jasmonic acid or ethylene, was induced upon pathogen attack when plants were previously colonized by PGPR. The analysis and interpretation of transcriptome data revealed that 12-oxo-phytodienoic acid, an intermediate of the jasmonic acid biosynthesis pathway, is likely to be an actor in the signaling cascade involved in ISR. In addition, we show that the PGPR counterbalanced the pathogen-induced changes in expression of a series of genes.
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Claims 4
Claim · model-written summary
Bradyrhizobium sp. strain ORS278 promoted induced systemic resistance in Arabidopsis thaliana.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Treatment
- photosynthetic Bradyrhizobium sp. strain, ORS278e0
- Interactor
- Bradyrhizobium sp. strain, ORS278e0biocontrol_agent
- Outcome
- ISRe0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a photosynthetic Bradyrhizobium sp. strain, ORS278, also exhibits the ability to promote ISR in Arabidopsis thaliana”
Claim · model-written summary
In Arabidopsis thaliana previously colonized by PGPR, a set of genes was induced upon pathogen attack, mostly predicted to be influenced by jasmonic acid or ethylene.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat1
- Treatment
- previously colonized by PGPRe1
- Interactor
- Pseudomonas syringae pv. tomato DC3000Pseudomonas syringae pv. tomato str. DC3000t0pathogen
- Second interactor
- PGPRe1biocontrol_agent
- Outcome
- a set of genese1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a set of genes, of which the majority was predicted to be influenced by jasmonic acid or ethylene, was induced upon pathogen attack when plants were previously colonized by PGPR”
t0“Pseudomonas syringae pv. tomato DC3000”
t1“Arabidopsis thaliana”
Claim · model-written summary
12-oxo-phytodienoic acid is likely an actor in the signaling cascade involved in ISR in Arabidopsis thaliana.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat1
- Compound
- 12-oxo-phytodienoic acide2
- Outcome
- ISRe2
- Qualifier
- likely to be an actor in the signaling cascadee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“12-oxo-phytodienoic acid, an intermediate of the jasmonic acid biosynthesis pathway, is likely to be an actor in the signaling cascade involved in ISR”
t1“Arabidopsis thaliana”
Claim · model-written summary
PGPR counterbalanced the pathogen-induced changes in expression of a series of Arabidopsis thaliana genes.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat1
- Treatment
- PGPRe3
- Interactor
- Pseudomonas syringae pv. tomato DC3000Pseudomonas syringae pv. tomato str. DC3000t0pathogen
- Second interactor
- PGPRe3biocontrol_agent
- Outcome
- changes in expression of a series of genese3
- Direction
- counterbalancede3
- Qualifier
- pathogen-induced changese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“the PGPR counterbalanced the pathogen-induced changes in expression of a series of genes”
t0“Pseudomonas syringae pv. tomato DC3000”
t1“Arabidopsis thaliana”
The same questions in other papers
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- positive
inoculation · Pseudomonas syringae pv. tomato str. DC3000 · Arabidopsis thaliana (thale cress)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
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.