A comparison of low intensity UV-C and high intensity pulsed polychromatic sources as elicitors of hormesis in tomato fruit

Scott, George A.; Rupar, Matevž; Fletcher, Arnetta; Dickinson, Matthew; Shama, Gilbert

doi:10.1016/j.postharvbio.2016.10.012

Cited by 19 publications

(27 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hormesis is a phenomenon in which low levels of potentially damaging radiation elicit beneficial responses, i.e., the physiological stimulation of beneficial responses in plants by low levels of stressors that otherwise elicit harmful responses. Hormetic doses of UV light (UV-continuous) radiation are involved in plant susceptibility toward diseases, and are capable of eliciting plant-resistance mechanisms such as the production of anti-fungal compounds [12,36,37]. UV-continuous radiation might also have a fungistatic effect promoted by phenolic compounds; they act as a barrier against both pathogenic attack and the diffusion of water and nutrients, which is important in pathogen growth [38].…”

Section: Growth Of F Pallidoroseum Under Pl Treatmentmentioning

confidence: 99%

See 1 more Smart Citation

Effect of pulsed light on postharvest disease control-related metabolomic variation in melon (Cucumis melo) artificially inoculated with Fusarium pallidoroseum

et al. 2020

View full text Add to dashboard Cite

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.

show abstract

Section: Growth Of F Pallidoroseum Under Pl Treatmentmentioning

confidence: 99%

“…Some studies show the efficiency of pulsed light (PL) treatment applied in the control of microorganism growth in different fruits [7][8][9][10][11]. However, studies involving PL as radiation from the perspective of inducing resistance mechanisms are still scarce [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of pulsed light on postharvest disease control-related metabolomic variation in melon (Cucumis melo) artificially inoculated with Fusarium pallidoroseum

et al. 2020

View full text Add to dashboard Cite

show abstract

“…physiological stimulation of beneficial responses in plants by low levels of stressors that otherwise elicit harmful responses. Hormetic doses of ultraviolet light (UV-C) radiation are involved in plant susceptibility towards diseases, and are capable of elicit plant resistance mechanisms including production of anti-fungal compounds such as specific phenolics including phytoalexins that act both as light quenchers that absorb damaging wavelengths of light, and antioxidants that prevent reactive oxygen species (ROS) mediated cellular damage [7, 24, 25]. The UV-C radiation might also have fungistatic effect promoted by phenolic compounds which plays a barrier role physically against pathogens attacks and the same barrier reduce water and nutrients diffusion important to the growth pathogen [26].…”

Section: Resultsmentioning

confidence: 99%

“…However, a recent study compared the application of low-intensity UV-C and high-intensity PL sources as elicitors of hormesis in tomato fruit ( Solanum lycopersicum cv. Mecano) [7]. Curiously, these authors showed that postharvest hormetic treatment with 16 pulses of PL (7.4 KJ m -2 ) with a spectral range (240 – 1050 nm) significantly delayed ripening along with inducing disease resistance to Botrytis cinerea in tomato fruit with 41.7% reduction in disease progression compared to 38.1% reduction with the conventional low-intensity UV-C (254 nm) at 0.37 KJ m -2 .…”

Section: Resultsmentioning

confidence: 99%

“…Ultraviolet light (UV-C) is a continuous radiation that is widely reported in the induction of resistance mechanisms and control of postharvest diseases, thus extending the shelf-life of fruit and vegetables [5, 6]. However, studies involving pulsed light (PL) as radiation from the perspective of inducing resistance mechanisms are still discreet [7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of pulsed light on postharvest disease control-related metabolomic variation in melon (Cucumis melo) artificially inoculated with Fusarium pallidoroseum

Filho

Silva

Lopes

et al. 2019

Preprint

View full text Add to dashboard Cite

AbstractPulsed 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 production of secondary metabolites, which directly affect disease control response mechanisms. This study aimed to evaluate the possible applications of pulsed ultraviolet light in controlling postharvest rot, mainly caused by Fusarium pallidoroseum in yellow melon ‘Goldex’, in natura, and its implications in the disease control as a function of metabolomic expression to effect fungicidal or fungistatic. 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 the MS/MS fragmentation patterns. Chemometric analysis by Principal Components Analysis (PCA) and Orthogonal Partial Least Squared Discriminant Analysis (OPLS-DA and 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 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 avoid chemical fungicides and may be applied to reduce the decay of melon quality during its export and storage.

show abstract

Challenges in Capsaicin Production Due to Abiotic Factors

Chapa-Oliver,

Guevara-González,

Mejía-Teniente

2024

Capsaicinoids

View full text Add to dashboard Cite

A comparison of low intensity UV-C and high intensity pulsed polychromatic sources as elicitors of hormesis in tomato fruit

Cited by 19 publications

References 38 publications

Effect of pulsed light on postharvest disease control-related metabolomic variation in melon (Cucumis melo) artificially inoculated with Fusarium pallidoroseum

Effect of pulsed light on postharvest disease control-related metabolomic variation in melon (Cucumis melo) artificially inoculated with Fusarium pallidoroseum

Effect of pulsed light on postharvest disease control-related metabolomic variation in melon (Cucumis melo) artificially inoculated with Fusarium pallidoroseum

Challenges in Capsaicin Production Due to Abiotic Factors

Contact Info

Product

Resources

About