Abstract
In previous investigations an ethanolic plant extract from Glycyrrhiza glabra (2.5% w/v) showed 100% efficacy against late blight (Phytophthora infestans) on detached tomato leaves. Based on these findings, the objective of this work was to investigate the effect of this extract against different important plant pathogenic fungi. Tests were carried out on potted plants. Against P. infestans, efficacies of 75% and 58% were achieved on tomato and potato plants with 5% extract concentration, respectively. Against another Oomycete, Pseudoperonospora cubensis, on cucumber, application of a 2.5% extract led to an efficacy of above 90%. The EC50-value was calculated to be 0.5% In a trial on beans against bean rust (Uromyces appendiculatus), G. glabra extract (5% concentration) showed 92% efficacy. In contrast, against powdery mildew on cucumber (Podosphaera xanthii), no disease reduction was found. Overall, the results indicate a high potential for the extract of G. glabra to control a number of important plant pathogens.
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Claims 6
Claim · model-written summary
A 5% extract gave 75% efficacy against P. infestans on tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- 5% extract concentratione0
- Interactor
- P. infestans
Phytophthora infestanse0pathogen - Outcome
- efficaciese0
- Value
- 75%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Against P. infestans, efficacies of 75% and 58% were achieved on tomato and potato plants with 5% extract concentration, respectively”
e1“Glycyrrhiza glabra extract”
Claim · model-written summary
A 5% extract gave 58% efficacy against P. infestans on potato.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- 5% extract concentratione0
- Interactor
- P. infestansPhytophthora infestanse0pathogen
- Outcome
- efficaciese0
- Value
- 58%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Against P. infestans, efficacies of 75% and 58% were achieved on tomato and potato plants with 5% extract concentration, respectively”
Claim · model-written summary
A 2.5% extract gave above 90% efficacy against Pseudoperonospora cubensis on cucumber.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- 2.5% extracte0
- Interactor
- Pseudoperonospora cubensis
Pseudoperonospora cubensise0pathogen - Outcome
- efficacye0
- Value
- above 90%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pseudoperonospora cubensis, on cucumber, application of a 2.5% extract led to an efficacy of above 90%”
Claim · model-written summary
The extract EC50 was 0.5% in the cucumber trial.
- Taxon
- cucumberCucumis sativuse1
- Interactor
- Pseudoperonospora cubensisPseudoperonospora cubensise1pathogen
- Outcome
- EC50-valuee0
- Value
- 0.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The EC50-value was calculated to be 0.5%”
e1“Pseudoperonospora cubensis, on cucumber”
Claim · model-written summary
A 5% G. glabra extract gave 92% efficacy against bean rust.
- Taxon
- beanse0
- Treatment
- G. glabra extract (5% concentration)e0
- Interactor
- Uromyces appendiculatus
.jpg?width=60)
Uromyces appendiculatuse0pathogen - Outcome
- efficacye0
- Value
- 92%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“on beans against bean rust (Uromyces appendiculatus), G. glabra extract (5% concentration) showed 92% efficacy”
Claim · model-written summary
The extract did not reduce powdery mildew on cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- G. glabra extracte1
- Interactor
- Podosphaera xanthii
Podosphaera xanthiie0pathogen - Outcome
- powdery mildewe0
- Direction
- no disease reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“against powdery mildew on cucumber (Podosphaera xanthii), no disease reduction was found”
e1“G. glabra extract”
The same questions in other papers
botanical · Podosphaera xanthii · Cucumis sativus (cucumber)Positive and negative results
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botanical · Phytophthora infestans · Solanum tuberosum (potato)Positive and negative results
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See all 25 papers →botanical · Uromyces appendiculatus · Phaseolus vulgaris (common bean)Results agree
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botanical · Pseudoperonospora cubensis · Cucumis sativus (cucumber)Results agree
6 papers in the same direction as this paper
- positive
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See all 7 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.