Abstract
The chemical structures and accumulation kinetics of several major soluble as well as wall-bound, alkali-hydrolyzable compounds induced upon infection of Arabidopsis thaliana leaves with Pseudomonas syringae pathovar tomato were established. All identified accumulating products were structurally related to tryptophan. Most prominent among the soluble substances were tryptophan, beta-d-glucopyranosyl indole-3-carboxylic acid, 6-hydroxyindole-3-carboxylic acid 6-O-beta-d-glucopyranoside, and the indolic phytoalexin camalexin. The single major accumulating wall component detectable under these conditions was indole-3-carboxylic acid. All of these compounds increased more rapidly, and camalexin as well as indole-3-carboxylic acid reached much higher levels, in the incompatible than in the compatible P. syringae/A. thaliana interaction. The only three prominent phenylpropanoid derivatives present in the soluble extract behaved differently. Two kaempferol glycosides remained largely unaffected, and sinapoyl malate decreased strongly upon bacterial infection with a time course inversely correlated with that of the accumulating tryptophan-related products. The accumulation patterns of both soluble and wall-bound compounds, as well as the disease resistance phenotypes, were essentially the same for infected wild-type and tt4 (no kaempferol glycosides) or fah1 (no sinapoyl malate) mutant plants. Largely different product combinations accumulated in wounded or senescing A. thaliana leaves. It seems unlikely that any one of the infection-induced compounds identified so far has a decisive role in the resistance response to P. syringae.
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 15
Claim · model-written summary
Infected Arabidopsis leaves accumulated major soluble tryptophan-related products.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Organ / stage
- leavese0
- Interactor
- Pseudomonas syringae pathovar tomato
Pseudomonas syringaee0pathogen - Outcome
- tryptophan, beta-d-glucopyranosyl indole-3-carboxylic acid, 6-hydroxyindole-3-carboxylic acid 6-O-beta-d-glucopyranosidee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infection of Arabidopsis thaliana leaves with Pseudomonas syringae pathovar tomato”
e1“Most prominent among the soluble substances were tryptophan, beta-d-glucopyranosyl indole-3-carboxylic acid, 6-hydroxyindole-3-carboxylic acid 6-O-beta-d-glucopyranoside, and the indolic phytoalexin camalexin”
Claim · model-written summary
Camalexin was a prominent soluble substance in infected Arabidopsis leaves.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Interactor
- Pseudomonas syringae pathovar tomatoPseudomonas syringaee0pathogen
- Outcome
- indolic phytoalexin camalexine1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infection of Arabidopsis thaliana leaves with Pseudomonas syringae pathovar tomato”
e1“the indolic phytoalexin camalexin”
Claim · model-written summary
Indole-3-carboxylic acid was the single major accumulating wall component.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Interactor
- Pseudomonas syringae pathovar tomatoPseudomonas syringaee0pathogen
- Outcome
- indole-3-carboxylic acide1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infection of Arabidopsis thaliana leaves with Pseudomonas syringae pathovar tomato”
e1“The single major accumulating wall component detectable under these conditions was indole-3-carboxylic acid”
Claim · model-written summary
Identified indolic products rose faster in incompatible than compatible interactions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Interactor
- P. syringaePseudomonas syringaee0pathogen
- Outcome
- All of these compoundse0
- Direction
- increased more rapidlye0
- Comparator
- the compatible P. syringae/A. thaliana interactione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“All of these compounds increased more rapidly, and camalexin as well as indole-3-carboxylic acid reached much higher levels, in the incompatible than in the compatible P. syringae/A. thaliana interaction”
Claim · model-written summary
Camalexin reached higher levels in incompatible than compatible interactions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Interactor
- P. syringaePseudomonas syringaee0pathogen
- Outcome
- camalexine0
- Direction
- much highere0
- Comparator
- the compatible P. syringae/A. thaliana interactione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“camalexin as well as indole-3-carboxylic acid reached much higher levels, in the incompatible than in the compatible P. syringae/A. thaliana interaction”
Claim · model-written summary
Indole-3-carboxylic acid reached higher levels in incompatible than compatible interactions.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Interactor
- P. syringaePseudomonas syringaee0pathogen
- Outcome
- indole-3-carboxylic acide0
- Direction
- much highere0
- Comparator
- the compatible P. syringae/A. thaliana interactione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“camalexin as well as indole-3-carboxylic acid reached much higher levels, in the incompatible than in the compatible P. syringae/A. thaliana interaction”
Claim · model-written summary
Two kaempferol glycosides were largely unaffected by bacterial infection.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- bacterial infectione0
- Outcome
- Two kaempferol glycosidese0
- Direction
- remained largely unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Two kaempferol glycosides remained largely unaffected, and sinapoyl malate decreased strongly upon bacterial infection”
Claim · model-written summary
Sinapoyl malate decreased strongly after bacterial infection.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- bacterial infectione0
- Interactor
- Pseudomonas syringae pathovar tomatoPseudomonas syringaet1pathogen
- Outcome
- sinapoyl malatee0
- Direction
- decreased stronglye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
t1“Pseudomonas syringae pathovar tomato”
e0“sinapoyl malate decreased strongly upon bacterial infection with a time course inversely correlated with that of the accumulating tryptophan-related products”
Claim · model-written summary
Sinapoyl malate had a time course inversely correlated with accumulating tryptophan-related products.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- sinapoyl malatee0
- Comparator
- accumulating tryptophan-related productse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“sinapoyl malate decreased strongly upon bacterial infection with a time course inversely correlated with that of the accumulating tryptophan-related products”
Claim · model-written summary
Metabolite accumulation patterns were essentially the same in infected wild-type and tt4 mutant plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- tt4e0
- Outcome
- accumulation patterns of both soluble and wall-bound compoundse0
- Direction
- essentially the samee0
- Comparator
- wild-typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“The accumulation patterns of both soluble and wall-bound compounds, as well as the disease resistance phenotypes, were essentially the same for infected wild-type and tt4 (no kaempferol glycosides) or fah1 (no sinapoyl malate) mutant plants”
Claim · model-written summary
Metabolite accumulation patterns were essentially the same in infected wild-type and fah1 mutant plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- fah1e0
- Outcome
- accumulation patterns of both soluble and wall-bound compoundse0
- Direction
- essentially the samee0
- Comparator
- wild-typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“The accumulation patterns of both soluble and wall-bound compounds, as well as the disease resistance phenotypes, were essentially the same for infected wild-type and tt4 (no kaempferol glycosides) or fah1 (no sinapoyl malate) mutant plants”
Claim · model-written summary
Disease resistance phenotypes were essentially the same in infected wild-type and tt4 mutant plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- tt4e0
- Outcome
- disease resistance phenotypese0
- Direction
- essentially the samee0
- Comparator
- wild-typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“The accumulation patterns of both soluble and wall-bound compounds, as well as the disease resistance phenotypes, were essentially the same for infected wild-type and tt4 (no kaempferol glycosides) or fah1 (no sinapoyl malate) mutant plants”
Claim · model-written summary
Disease resistance phenotypes were essentially the same in infected wild-type and fah1 mutant plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Material
- fah1e0
- Outcome
- disease resistance phenotypese0
- Direction
- essentially the samee0
- Comparator
- wild-typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“The accumulation patterns of both soluble and wall-bound compounds, as well as the disease resistance phenotypes, were essentially the same for infected wild-type and tt4 (no kaempferol glycosides) or fah1 (no sinapoyl malate) mutant plants”
Claim · model-written summary
Wounded and senescing leaves accumulated different product combinations.
- Taxon
- A. thalianaArabidopsis thalianae0
- Organ / stage
- leavese0
- Outcome
- Largely different product combinationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Largely different product combinations accumulated in wounded or senescing A. thaliana leaves”
Claim · model-written summary
The authors judged a decisive resistance role for any one identified infection-induced compound unlikely.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Interactor
- P. syringaePseudomonas syringaee0pathogen
- Outcome
- resistance response to P. syringaee0
- Qualifier
- any one of the infection-induced compounds identified so fare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“It seems unlikely that any one of the infection-induced compounds identified so far has a decisive role in the resistance response to P. syringae”
The same questions in other papers
infection · molecular: metabolites · Arabidopsis thaliana (thale cress)Positive and negative results
5 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
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.