Abstract
Endophytic fungi offer promising alternatives for sustainable plant disease management strategies, often through the production of bioactive secondary metabolites. This study investigated the biocontrol potential of filtrates and extracts, produced under controlled conditions, from Alternaria leptinellae E138 against Pseudomonas syringae in tomato plants under greenhouse conditions. To understand the main mechanisms involved in biocontrol, the direct inhibition of bacterial growth and disruption of quorum sensing activity caused by metabolites were studied in vitro, as well as indirect mechanisms, such as their capacity to produce phytohormone-like substances, nutrient mobilization, and antioxidant activity, which can enhance plant growth and fitness. Moreover, a mass spectrometry analysis was used to tentatively identify the secondary metabolites present in the extract with antimicrobial properties, which could explain the biocontrol effects observed. Mycopriming assays, involving the direct treatment of tomato seeds with the fungal A. leptinellae E138 extracts, produced increased germination rates and seedling vigor in tomato seeds. As another treatment, postemergence application of the extracts in greenhouse conditions significantly improved plant health and resulted in a 41% decrease in disease severity. Overall, this study underscores the potential of A. leptinellae E138 extract as a plant growth promoter with biocontrol capabilities, offering promising avenues for sustainable plant disease management.
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Claims 4
Claim · model-written summary
Seed mycopriming with A. leptinellae E138 extracts increased tomato germination rates.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- direct treatment of tomato seeds with the fungal A. leptinellae E138 extractse0
- Interactor
- A. leptinellae E138Alternaria leptinellaee0symbiont
- Outcome
- germination ratese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycopriming assays, involving the direct treatment of tomato seeds with the fungal A. leptinellae E138 extracts, produced increased germination rates and seedling vigor in tomato seeds.”
Claim · model-written summary
Seed mycopriming with A. leptinellae E138 extracts increased tomato seedling vigor.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- direct treatment of tomato seeds with the fungal A. leptinellae E138 extractse0
- Interactor
- A. leptinellae E138Alternaria leptinellaee0symbiont
- Outcome
- seedling vigore0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycopriming assays, involving the direct treatment of tomato seeds with the fungal A. leptinellae E138 extracts, produced increased germination rates and seedling vigor in tomato seeds.”
Claim · model-written summary
Postemergence extract application significantly improved tomato plant health in greenhouse conditions.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- postemergence application of the extractse0
- Interactor
- Alternaria leptinellae E138Alternaria leptinellaee2symbiont
- Outcome
- plant healthe0
- Direction
- improvede0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postemergence application of the extracts in greenhouse conditions significantly improved plant health”
e1“in tomato plants under greenhouse conditions”
e2“Alternaria leptinellae E138 against Pseudomonas syringae”
Claim · model-written summary
Postemergence extract application decreased tomato disease severity by 41% in greenhouse conditions.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- postemergence application of the extractse0
- Interactor
- Pseudomonas syringae
Pseudomonas syringaee1pathogen - Outcome
- disease severitye0
- Direction
- decreasee0
- Value
- 41%e0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postemergence application of the extracts in greenhouse conditions significantly improved plant health and resulted in a 41% decrease in disease severity.”
e1“against Pseudomonas syringae in tomato plants under greenhouse conditions”
The same questions in other papers
botanical · growth · Solanum lycopersicum (tomato)Positive and negative results
202 papers in the same direction as this paper · 87 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- negative
287 papers more in this group
See all 291 papers →botanical · Pseudomonas syringae · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- 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.