UV-C light and pulsed light as alternatives to chemical and biological elicitors for stimulating plant natural defenses against fungal diseases

@article{Urban2018UVCLA,
  title={UV-C light and pulsed light as alternatives to chemical and biological elicitors for stimulating plant natural defenses against fungal diseases},
  author={Laurent Urban and Daoudi Chabane Sari and Bernard P. Orsal and M{\^o}nica Maria de Almeida Lopes and R. Miranda and Jawad Aarrouf},
  journal={Scientia Horticulturae},
  year={2018},
  volume={235},
  pages={452-459}
}
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Flashes of UV-C light: An innovative method for stimulating plant defences
TLDR
The results confirmed that UV-C light stimulates plant resistance; they show that irradiation for one second is more effective than irradiated for 60 s, and that repetition of treatments is moreeffective than single light treatments.
UV Lighting in Horticulture: A Sustainable Tool for Improving Production Quality and Food Safety
Ultraviolet (UV) is a component of solar radiation that can be divided into three types defined by waveband: UV-A (315–400 nm), UV-B (280–315 nm), and UV-C (<280 nm). UV light can influence the…
Hormetic doses of UV‐C light decrease the susceptibility of tomato plants to Botrytis cinerea infection
TLDR
Treatment with single doses of 0.85 kJ/m² of UV‐C light were found to significantly increase plant defences against B. cinerea, and this decrease in susceptibility was associated with increased PAL activity and the amount of bound phenolics compared to levels in control plants.
Low doses of UV-C irradiation affects growth, fruit yield and photosynthetic activity of tomato plants
Inducing fungal resistance of spinach treated with preharvest hormetic doses of UV-C
Application of UV-C Irradiation to Rosa x hybrida Plants as a Tool to Minimise Macrosiphum rosae Populations
UV-C irradiation is known to enhance plant resistance against insect pests. In the present study, we evaluated the effects of low doses of UV-C on Macrosiphum rosae infesting greenhouse rose (Rosa x…
UV-C mediated accumulation of pharmacologically significant phytochemicals under light regimes in in vitro culture of Fagonia indica (L.)
TLDR
It is suggested that light and UV can synergistically improve the metabolism of F. indica and could be used to produce such valuable metabolites on commercial scale.
222 nm ultraviolet radiation C causes more severe damage to guard cells and epidermal cells of Arabidopsis plants than does 254 nm ultraviolet radiation
TLDR
It is suggested that 222-UVC severely damages guard cells and epidermal cells and that such damage might have resulted in growth inhibition.
Xenon lamps used for fruit surface sterilization can increase the content of total flavonols in leaves of Lactuca sativa L. without any negative effect on net photosynthesis
TLDR
The observations suggest that PL could be used on field or greenhouse crops to increase their phytochemical content and some observations even suggest that certain treatments could result in an additional positive effect.
UV-C irradiation compromises conidial germination, formation of appressoria, and induces transcription of three putative photolyase genes in the barley powdery mildew fungus, Blumeria graminis f. sp. hordei.
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References

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TLDR
Recently, molecular studies have revealed genes involved in response to UV exposure, with respect to programmed cell death (PCD), that help the plant in providing tolerance against UV radiation.
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TLDR
UV-C treated tomatoes were firmer in texture and less red in color than the control tomatoes, indicating a delay in ripening, and resistance to storage rots of tomatoes are probably related.
UVR8 mediates UV-B-induced Arabidopsis defense responses against Botrytis cinerea by controlling sinapate accumulation.
TLDR
It is shown that ecologically meaningful doses of UV-B radiation increase Arabidopsis resistance to the necrotrophic fungus Botrytis cinerea and that this effect is mediated by the photoreceptor UVR8, indicating that UVR 8 plays an important role in mediating the effects of UV -B radiation on pathogen resistance by controlling the expression of the sinapate biosynthetic pathway.
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Pre-harvest hormetic doses of UV-C radiation can decrease susceptibility of lettuce leaves (Lactuca sativa L.) to Botrytis cinerea L.
EFFECT OF ULTRAVIOLET-C LIGHT ON POSTHARVEST DECAY OF STRAWBERRY
TLDR
The overall results from these investigations indicate that treatment with low u.v.-C doses produces a reduction in postharvest decay of strawberries related to induced resistance mechanisms, and a germicidal effect of reducing external contaminating pathogens cannot be excluded.
Alternations in VaSTS gene cytosine methylation and t-resveratrol production in response to UV-C irradiation in Vitis amurensis Rupr. cells
TLDR
Exposure of V. amurensis cells to UV of C type significantly increased t-resveratrol production and certain STS and PAL expression, while methylation level of constitutively expressed VaSTS1 gene did not changed significantly.
UV-B and UV-C induction of NADP-malic enzyme in tissues of different cultivars of Phaseolus vulgaris (bean)
TLDR
The effects of the treatment of different tissues of three bean cultivars with ultra-violet (UV) UV-B and UV-C radiation and red light on the activity, quantity and RNA levels of NADP-malic enzyme (NADP-ME) were determined, showing that the regulation of the expression of this enzyme is phytocrome-independent.
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