Abstract
As available tools for crop disease management are scarce, new, effective, and eco-friendly solutions are needed. So, this study aimed at assessing the antibacterial activity of a dried leaf Eucalyptus globulus Labill. aqueous extract (DLE) against Pseudomonas syringae pv. tomato (Pst), Xanthomonas euvesicatoria (Xeu), and Clavibacter michiganensis michiganensis (Cmm). For this, the inhibitory activity of different concentrations of DLE (0, 15, 30, 45, 60, 75, 90, 105, 120, 135, and 250 g L−1) was monitored against the type strains of Pst, Xeu, and Cmm through the obtention of their growth curves. After 48 h, results showed that the pathogen growth was strongly inhibited by DLE, with Xeu the most susceptible species (15 g L−1 MIC and IC50), followed by Pst (30 g L−1 MIC and IC50), and Cmm (45 and 35 g L−1 MIC and IC50, respectively). Additionally, using the resazurin assay, it was possible to verify that DLE considerably impaired cell viability by more than 86%, 85%, and 69% after Pst, Xeu, and Cmm were incubated with DLE concentrations equal to or higher than their MIC, respectively. However, only the treatment with DLE at 120 g L−1 did not induce any hypersensitive response in all pathogens when treated bacterial suspensions were infiltrated onto tobacco leaves. Overall, DLE can represent a great strategy for the prophylactic treatment of tomato-associated bacterial diseases or reduce the application of environmentally toxic approaches.
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Claims 8
Claim · model-written summary
Eucalyptus extract inhibited Xeu, with 15 g L−1 MIC and IC50.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Eucalyptus globulust0
- Interactor
- Xeue0pathogen
- Outcome
- Xeu the most susceptible speciese0
- Direction
- most susceptiblee0
- Value
- 15 g L−1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xeu the most susceptible species (15 g L−1 MIC and IC50)”
t0“Eucalyptus globulus Leaf Aqueous Extract Differentially Inhibits the Growth of Three Bacterial Tomato Pathogens”
Claim · model-written summary
Eucalyptus extract inhibited Pst, with 30 g L−1 MIC and IC50.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Eucalyptus globulust0
- Interactor
- Pste0pathogen
- Outcome
- Pste0
- Value
- 30 g L−1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pst (30 g L−1 MIC and IC50)”
t0“Eucalyptus globulus Leaf Aqueous Extract Differentially Inhibits the Growth of Three Bacterial Tomato Pathogens”
Claim · model-written summary
Eucalyptus extract inhibited Cmm, with 45 g L−1 MIC and 35 g L−1 IC50.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Eucalyptus globulust0
- Interactor
- Cmme0pathogen
- Outcome
- Cmme0
- Value
- 45 and 35 g L−1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cmm (45 and 35 g L−1 MIC and IC50, respectively)”
t0“Eucalyptus globulus Leaf Aqueous Extract Differentially Inhibits the Growth of Three Bacterial Tomato Pathogens”
Claim · model-written summary
Extract impaired Pst viability by more than 86%.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- DLE concentrations equal to or higher than their MICe0
- Interactor
- Pste0pathogen
- Outcome
- cell viabilitye0
- Direction
- impairede0
- Value
- more than 86%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DLE considerably impaired cell viability by more than 86%, 85%, and 69% after Pst, Xeu, and Cmm were incubated with DLE concentrations equal to or higher than their MIC, respectively”
t0“Eucalyptus globulus Leaf Aqueous Extract Differentially Inhibits the Growth of Three Bacterial Tomato Pathogens”
Claim · model-written summary
Extract impaired Xeu viability by more than 85%.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- DLE concentrations equal to or higher than their MICe0
- Interactor
- Xeue0pathogen
- Outcome
- cell viabilitye0
- Direction
- impairede0
- Value
- 85%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DLE considerably impaired cell viability by more than 86%, 85%, and 69% after Pst, Xeu, and Cmm were incubated with DLE concentrations equal to or higher than their MIC, respectively”
t0“Eucalyptus globulus Leaf Aqueous Extract Differentially Inhibits the Growth of Three Bacterial Tomato Pathogens”
Claim · model-written summary
Extract impaired Cmm viability by more than 69%.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- DLE concentrations equal to or higher than their MICe0
- Interactor
- Cmme0pathogen
- Outcome
- cell viabilitye0
- Direction
- impairede0
- Value
- 69%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DLE considerably impaired cell viability by more than 86%, 85%, and 69% after Pst, Xeu, and Cmm were incubated with DLE concentrations equal to or higher than their MIC, respectively”
t0“Eucalyptus globulus Leaf Aqueous Extract Differentially Inhibits the Growth of Three Bacterial Tomato Pathogens”
Claim · model-written summary
Extract at 120 g L−1 did not induce a hypersensitive response in tobacco leaves with treated pathogen suspensions.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- DLE at 120 g L−1e0
- Interactor
- pathogense0pathogen
- Outcome
- hypersensitive responsee0
- Direction
- did not inducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the treatment with DLE at 120 g L−1 did not induce any hypersensitive response in all pathogens when treated bacterial suspensions were infiltrated onto tobacco leaves”
Claim · model-written summary
The authors suggest eucalyptus extract for prophylactic tomato disease management.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- prophylactic treatment of tomato-associated bacterial diseasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DLE can represent a great strategy for the prophylactic treatment of tomato-associated bacterial diseases”
The same questions in other papers
Eucalyptus globulus · disease · Solanum lycopersicum (tomato)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.