Differential Flavonoid Response to Par and Uv-B Light in Chive (Allium Schoenoprasum L.)

Nitz, G.; Grubmuller, E.; Schnitzler, W. H.

doi:10.17660/actahortic.2004.659.107

Cited by 8 publications

(6 citation statements)

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“…Moreover, as shown for Arabidopsis thaliana (Götz et al, 2010), we observed higher concentrations of quercetin in leaves induced by high PAR/+UV-B in comparison to low PAR/+UV-B. Furthermore, studies on various plant species confirmed the promoting effect of high PAR on flavonol accumulation, including quercetin, even in the absence of UV-B radiation (Nitz et al, 2004;Agati et al, 2011;Müller et al, 2013).…”

Section: Discussionsupporting

confidence: 80%

See 1 more Smart Citation

Concentration of hinokinin, phenolic acids and flavonols in leaves and stems of Hydrocotyle leucocephala is differently influenced by PAR and ecologically relevant UV-B level

Müller

Lankes

Albert

et al. 2015

Journal of Plant Physiology

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Section: Discussionsupporting

confidence: 80%

“…though, the presence of UV-B radiation additively promoted flavonoid accumulation in leaves (Nitz et al, 2004;Götz et al, 2010;Agati et al, 2011;Müller et al, 2013).…”

Section: Introductionmentioning

confidence: 91%

Concentration of hinokinin, phenolic acids and flavonols in leaves and stems of Hydrocotyle leucocephala is differently influenced by PAR and ecologically relevant UV-B level

Müller

Lankes

Albert

et al. 2015

Journal of Plant Physiology

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“…However, other kaempferol glycosides found by Olsson et al (1998), such as the kaempferol 3-2"'-sinapoylsophoroside-7-glucoside, were not similarly increased, underlying the differential behavior that different kaempferol glycosides might have toward UV-B exposure also in other plant species. A marked variation in the response to UV-B irradiation among the different flavonols was found also in chive (Allium schoenoprasum L.) cultivated under 15 mol m −2 d −1 PAR supplemented with 2 kJ m −2 d −1 UV-B radiation (Grubmüller et al, 2004). Particularly, the highest increase was observed for quercetins followed by isorhamnetins and kaempferols.…”

Section: Glycosylated Flavonols Were Differently Influences By Uv-b Exposurementioning

confidence: 78%

Beyond the Visible and Below the Peel: How UV-B Radiation Influences the Phenolic Profile in the Pulp of Peach Fruit. A Biochemical and Molecular Study

et al. 2020

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In the last decades, UV-B radiation has attracted attention due to its potential to increase nutraceutical values of fruit and vegetables, especially by inducing the accumulation of phenolics in a structure-dependent way. However, most current studies have investigated the UV-B-driven changes only in the peel or focusing on individual phenolic classes. Adopting an "-omics" approach, this work aimed to deepen the knowledge about the effects of UV-B radiation on the phenolic profile in the pulp of peach fruit. Based on these considerations, melting flesh yellow peaches (Prunus persica L., cv. Fairtime) were subjected to either a 10-or 60-min UV-B treatment (1.39 and 8.33 kJ m −2 , respectively), and sampled at different time points from the exposure. A UHPLC-ESI/QTOF-MS analysis coupled with a phenolics-specific database for the annotation of compounds and a multivariate discriminant analysis revealed a marked effect of UV-B radiation on the phenolic profiles of peach pulp. Particularly, a general, transient increase was observed after 24 h from the irradiation, especially for flavanols, flavonols, and flavones. Such behavior diverges from what was observed in the peel, where an overall increase of phenolics was observed after 36 h from the irradiation. Concerning the flavonols in the pulp, UV-B exposure stimulated a specific accumulation of isorhamnetin and kaempferol derivatives, with variations imposed by the different sugar moiety bound. Anthocyanins, which were the second most abundant flavonoid group after flavonols, displayed a general decrease after 36 h that was not attributable to specific molecules. The UV-B treatments also increased the glycoside/aglycone ratio of flavonols and anthocyanins after 24 h, by increasing the glycoside concentration of both, flavonols and anthocyanins, and decreasing the aglycone concentration of anthocyanins. In support of the biochemical results, targeted gene expression analysis by RT-qPCR revealed an UV-B-induced activation of many genes involved in the flavonoid pathway, e.g., CHS,

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“…The flavonoid content could not represent completely the plant's ability for resistance to UV-B radiation. The composition of flavonoids also plays an important role in the plant resistance to UV-B radiation [18,19]. The UV-absorbing characteristics of flavonoids have long been considered to be evidence for the role of flavonoids in UV protection [2].…”

Section: Discussionmentioning

confidence: 99%

Antioxidant Capacity of Flavonoid in Soybean Seedlings under the Joint Actions of Rare Earth Element La(III) and Ultraviolet-B Stress

Peng

Zhou

2008

Biol Trace Elem Res

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The dynamic state of antioxidant capacity of flavonoid was investigated for a further demonstration of alleviating the damage of the ultraviolet (UV)-B radiation in the La-treated soybean seedlings under UV-B stress. Using hydroponics culture, the effects of lanthanum on the contents of flavonoid and its ability of antioxidant under elevated ultraviolet-B radiation (280-320 nm) was studied. The results showed flavonoid content in soybean seedlings with UV-B treatment during the stress and convalescent period was increased initially and then decreased, compared with control. Membrane permeability and MDA contents increase at first (first to fifth day) and then decrease (6th-11th day). A similar change of flavonoid content and clearance of flavonoid scavenging O2- and *OH in soybean seedlings occurred. Flavonoid content and ability of flavonoid scavenging O2- and *OH in soybean seedlings with La(III) + UV-B treatment were higher than those of UV-B treatment. Meanwhile, membrane permeability and MDA contents in soybean seedlings were lower than those of UV-B treatment. Compared with control, phenylalanine content in soybean seedlings with UV-B treatment is depressed, phenylalanine content in soybean seedlings with La(III) treatment was enhanced. However, phenylalanine content in La(III) + UV-B treatment is not decreased but slightly increased, compared with UV-B treatment. It suggested that the regulative effect of La(III) of the optimum concentration on flavonoid improved the metabolism of ROS, diminished the concentration of MDA and maintained normal plasma membrane permeability, and that its protective effect against low UV-B radiation is superior to that of high UV-B radiation. The defensive effect of La(III) on soybean seedlings under UV-B stress is carried out on the layer of defense system.

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Differential Flavonoid Response to Par and Uv-B Light in Chive (Allium Schoenoprasum L.)

Cited by 8 publications

References 0 publications

Concentration of hinokinin, phenolic acids and flavonols in leaves and stems of Hydrocotyle leucocephala is differently influenced by PAR and ecologically relevant UV-B level

Concentration of hinokinin, phenolic acids and flavonols in leaves and stems of Hydrocotyle leucocephala is differently influenced by PAR and ecologically relevant UV-B level

Beyond the Visible and Below the Peel: How UV-B Radiation Influences the Phenolic Profile in the Pulp of Peach Fruit. A Biochemical and Molecular Study

Antioxidant Capacity of Flavonoid in Soybean Seedlings under the Joint Actions of Rare Earth Element La(III) and Ultraviolet-B Stress

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