Abstract
In grapevine (Vitis vinifera L.), defense responses after microbial infection or treatment with elicitors involve accumulation of phytoalexins, oxidative burst, and the synthesis of pathogenesis-related proteins. Oligosaccharide fractions from fungal or algal cell walls efficiently induce the defense responses, but a detailed analysis of the elicitor-plant cell surface interaction at the molecular level is precluded by the lack of chemically pure oligosaccharide elicitors. A grapevine liquid cell culture system was used to examine the properties of cyclodextrins (CDs) as inducers of defense responses. This work shows that the chemically pure heptakis(2,6-di-O-methyl)-betaCD caused a dramatic extracellular accumulation of the phytoalexin resveratrol and changes in peroxidase activity and isoenzymatic pattern. Other modified CDs tested on several grapevine cell lines resulted in different eliciting capacities of CDs and different sensibilities of the cell lines. The spent medium of elicited cultures was shown to disturb Botrytis cinerea growth in a plate assay.
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Claims 4
Claim · model-written summary
Heptakis(2,6-di-O-methyl)-betaCD caused dramatic extracellular resveratrol accumulation in grapevine cells.
- Treatment
- heptakis(2,6-di-O-methyl)-betaCDe0
- Outcome
- extracellular accumulation of the phytoalexin resveratrole0
- Direction
- dramatice0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chemically pure heptakis(2,6-di-O-methyl)-betaCD caused a dramatic extracellular accumulation of the phytoalexin resveratrol”
t0“grapevine”
Claim · model-written summary
The same cyclodextrin changed peroxidase activity and isoenzyme patterns.
- Treatment
- heptakis(2,6-di-O-methyl)-betaCDe0
- Gene
- peroxidasee0
- Outcome
- changes in peroxidase activity and isoenzymatic patterne0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“heptakis(2,6-di-O-methyl)-betaCD caused a dramatic extracellular accumulation of the phytoalexin resveratrol and changes in peroxidase activity and isoenzymatic pattern”
t0“grapevine”
Claim · model-written summary
Modified cyclodextrins and grapevine cell lines differed in eliciting capacity and sensitivity.
- Material
- grapevine cell linese0
- Treatment
- modified CDse0
- Outcome
- different eliciting capacities of CDs and different sensibilities of the cell linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Other modified CDs tested on several grapevine cell lines resulted in different eliciting capacities of CDs and different sensibilities of the cell lines”
Claim · model-written summary
Spent medium of elicited grapevine cultures disturbed Botrytis cinerea growth in a plate assay.
- Treatment
- spent medium of elicited culturese0
- Interactor
- Botrytis cinerea
Botrytis cinereae0pathogen - Outcome
- Botrytis cinerea growthe0
- Direction
- disturbe0
- Setting
- plate assaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The spent medium of elicited cultures was shown to disturb Botrytis cinerea growth in a plate assay”
t0“grapevine”
The same questions in other papers
beta-cyclodextrin · molecular: metabolites · VitisResults agree
1 paper in the same direction as this paper
- positive
in vitro · Botrytis cinerea · VitisResults agree
3 papers in the same direction as this paper
- positive
- positive
- 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.