Abstract
Pulsed light, as a postharvest technology, is an alternative to traditional fungicides, and can be used on a wide variety of fruit and vegetables for sanitization or pathogen control. In addition to these applications, other effects also are detected in vegetal cells, including changes in metabolism and secondary metabolite production, which directly affect disease control response mechanisms. This study aimed to evaluate pulsed ultraviolet light in controlling postharvest rot, caused by Fusarium pallidoroseum in 'Spanish' melon, in natura, and its implications in disease control as a function of metabolomic variation to fungicidal or fungistatic effects. The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2. Ultra-performance liquid chromatography (UPLC) coupled to a quadrupole-time-of-flight (QTOF) mass analyzer identified 12 compounds based on tandem mass spectrometry (MS/MS) fragmentation patterns. Chemometric analysis by Principal Components Analysis (PCA) and Orthogonal Partial Least Squared Discriminant Analysis (OPLS-DA) and corresponding S-Plot were used to evaluate the changes in fruit metabolism. PL technology provided protection against postharvest disease in melons, directly inhibiting the growth of F. pallidoroseum through the upregulation of specific fruit biomarkers such as pipecolic acid (11), saponarin (7), and orientin (3), which acted as major markers for the defense system against pathogens. PL can thus be proposed as a postharvest technology to prevent chemical fungicides and may be applied to reduce the decay of melon quality during its export and storage.
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Claims 7
Claim · model-written summary
A pulsed light dose of 9 KJ m-2 inhibited F. pallidoroseum growth in melon.
- Taxon
- Cucumis melo
.jpg?width=60)
Cucumis meloe1 - Treatment
- pulsed light (PL)e1
- Interactor
- F. pallidoroseumFusarium incarnatume1pathogen
- Outcome
- F. pallidoroseum growthe1
- Direction
- inhibitede1
- Value
- 9 KJ m-2e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2”
Claim · model-written summary
Pulsed light technology reduced postharvest disease in melons.
- Taxon
- Cucumis meloCucumis meloe1
- Treatment
- PL technologye2
- Outcome
- postharvest diseasee2
- Direction
- decreaseinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2”
e2“PL technology provided protection against postharvest disease in melons”
Claim · model-written summary
Pulsed light upregulated the fruit biomarkers pipecolic acid, saponarin and orientin in melon.
- Taxon
- Cucumis meloCucumis meloe1
- Treatment
- PL technologye2
- Compound
- pipecolic acid (11), saponarin (7), and orientin (3)e3
- Outcome
- specific fruit biomarkerse3
- Direction
- upregulatione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2”
e2“PL technology provided protection against postharvest disease in melons”
e3“directly inhibiting the growth of F. pallidoroseum through the upregulation of specific fruit biomarkers such as pipecolic acid (11), saponarin (7), and orientin (3)”
Claim · model-written summary
The upregulated fruit biomarkers act as major markers of the melon defense system against pathogens.
- Taxon
- Cucumis meloCucumis meloe1
- Compound
- pipecolic acid (11), saponarin (7), and orientin (3)e3
- Outcome
- defense system against pathogense4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2”
e3“directly inhibiting the growth of F. pallidoroseum through the upregulation of specific fruit biomarkers such as pipecolic acid (11), saponarin (7), and orientin (3)”
e4“which acted as major markers for the defense system against pathogens”
Claim · model-written summary
Pulsed light can be proposed as a postharvest technology to prevent chemical fungicide use.
- Taxon
- Cucumis meloCucumis meloe1
- Outcome
- a postharvest technology to prevent chemical fungicidese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2”
e5“PL can thus be proposed as a postharvest technology to prevent chemical fungicides and may be applied to reduce the decay of melon quality during its export and storage”
Claim · model-written summary
Pulsed light may be applied to reduce the decay of melon quality during export and storage.
- Taxon
- Cucumis meloCucumis meloe1
- Outcome
- reduce the decay of melon quality during its export and storagee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2”
e5“PL can thus be proposed as a postharvest technology to prevent chemical fungicides and may be applied to reduce the decay of melon quality during its export and storage”
Claim · model-written summary
UPLC-QTOF analysis identified 12 compounds in melon.
- Taxon
- Cucumis meloCucumis meloe1
- Outcome
- compoundse6
- Value
- 12 compoundse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2”
e6“Ultra-performance liquid chromatography (UPLC) coupled to a quadrupole-time-of-flight (QTOF) mass analyzer identified 12 compounds”
The same questions in other papers
light · molecular: metabolites · Cucumis melo (muskmelon)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
1 paper more in this group
See all 5 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.