Ultraviolet-B radiation applied to detached peach fruit: A study of free radical generation by EPR spin trapping

Sgherri, Cristina; Scattino, Claudia; Pinzino, Calogero; Tonutti, Pietro; Ranieri, Annamaria

doi:10.1016/j.plaphy.2015.07.031

Cited by 21 publications

(20 citation statements)

References 31 publications

(38 reference statements)

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“…Similar to previous reports in peach, strawberry and lettuce 53 54 55 , compared with white light and dark, UV-B considerably increased the anthocyanin accumulation in the hypocotyls of radish sprouts ( Fig. 1A ).…”

Section: Discussionsupporting

confidence: 91%

Hydrogen peroxide, nitric oxide and UV RESISTANCE LOCUS8 interact to mediate UV-B-induced anthocyanin biosynthesis in radish sprouts

Zhang

et al. 2016

Sci Rep

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The cross talk among hydrogen peroxide (H2O2), nitric oxide (NO) and UV RESISTANCE LOCUS8 (UVR8) in UV-B-induced anthocyanin accumulation in the hypocotyls of radish sprouts was investigated. The results showed that UV-B irradiation significantly increased the anthocyanin accumulation and the expression of UVR8, and a similar trend appeared in radish sprouts subjected to cadmium, chilling and salt stresses regardless of light source. However, these responses disappeared under dark exposure. These results suggest that abiotic stress-induced anthocyanin accumulation and UVR8 expression were light-dependent. Moreover, abiotic stresses all enhanced the production of H2O2 and exogenous H2O2 addition significantly increased the anthocyanin concentration and UVR8 transcription, while these increases were severely inhibited by addition of dimethylthiourea (DMTU, a chemical trap for H2O2). It seems to suggest that H2O2 played an important role in the anthocyanin biosynthesis. Furthermore, addition of 0.5 mM sodium nitroprusside (SNP, a NO-releasing compound) substantially induced the anthocyanin accumulation, and H2O2-induced anthocyanin accumulation and UVR8 expression were significantly suppressed by co-treatment with 2-phenyl-4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl (PTIO, a NO scavenger), which was parallel with the expression of anthocyanin biosynthesis-related transcription factors and structural genes. All these results demonstrate that both H2O2 and NO are involved in UV-B-induced anthocyanin accumulation, and there is a crosstalk between them as well as a classical UVR8 pathway.

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Section: Discussionsupporting

confidence: 91%

Hydrogen peroxide, nitric oxide and UV RESISTANCE LOCUS8 interact to mediate UV-B-induced anthocyanin biosynthesis in radish sprouts

Zhang

et al. 2016

Sci Rep

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“…In this study, we found that CRY3 and UVR3 were up‐0‐regulated by light and the expression pattern of CRY3 was similar with CRY1 and CRY2 reported in Jiang et al () and consistent with the anthocyanin accumulation. Previous studies found that UV‐B increased anthocyanin accumulation and the UVR8 expression level (Sgherri, Scattino, Pinzino, Tonutti, & Ranieri, ; Wu et al, ). In addition, although the nuclear accumulation of UVR8 was specific to UV‐B, ~40% of nuclei have detectable green fluorescent protein (GFP) fluorescence under white light lacking UV‐B (Brown et al, ; Kaiserli & Jenkins, ).…”

Section: Discussionmentioning

confidence: 87%

Combined transcriptomic and proteomic analysis constructs a new model for light‐induced anthocyanin biosynthesis in eggplant (Solanum melongena L.)

Ren

Gao

et al. 2017

Plant Cell & Environment

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Light is a key environmental factor affecting anthocyanin biosynthesis. Our previous study demonstrated that "Lanshan Hexian" is a light-sensitive eggplant cultivar, but its regulatory mechanism is unknown. Here, delphinidin-3-[4-(cis-p-coumaroyl)-rhamnosyl-glucopyranoside]-5-glucopyranoside and delphinidin-3-[4-(trans-p-coumaroyl)-rhamnosyl-glucopyranoside]-5-glucopyranoside were identified as the main anthocyanin components in Lanshan Hexian by ultra-performance liquid chromatography-tandem mass spectrometry. Three time points of anthocyanin accumulation, including the start point (0 day), fastest point (5 days), and highest point (12 day), were investigated by using ribonucleic acid sequencing and iTRAQ technology. The corresponding correlation coefficients of differentially expressed genes, and differentially expressed proteins were 0.6936, 0.2332, and 0.6672. Anthocyanin biosynthesis was a significantly enriched pathway, and CHI, F3H, 3GT, 5GT, and HY5 were regulated at both transcriptional and translational levels. Moreover, some transcription factors and photoreceptors may participate in light-induced anthocyanin biosynthesis like the known transcription factors MYB113 and TT8. The transient expression assay indicated that SmMYB35, SmMYB44, and a SmMYB86 isoform might involve in the light-induced anthocyanin biosynthesis pathway. Finally, a regulatory model for light-induced anthocyanin biosynthesis in eggplant was constructed. Our work provides a new direction for the study of the molecular mechanisms of light-induced anthocyanin biosynthesis in eggplant.

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“…Particularly in peaches, it was found that the effectiveness of the treatment with UV-B in the modulation of the concentration of phenolic compounds and the expression of the genes involved in the synthesis of phenylpropanoids was genotype-dependent ( Scattino et al., 2014 ; Zhao et al., 2017 ). UV-A and UV-B treatment increased the content of flavonoids, ascorbate, and cyanidin-3-O-glucoside, and thus, it increased the antioxidant activity of treated peach ( Sgherri et al., 2015 ). In line with these results, bagging also affects the accumulation of nutraceutic compounds.…”

Section: Pre- and Postharvest Treatments Affecting The Phytochemical mentioning

confidence: 99%

Stone Fruit as Biofactories of Phytochemicals With Potential Roles in Human Nutrition and Health

et al. 2020

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Phytochemicals or secondary metabolites present in fruit are key components contributing to sensory attributes like aroma, taste, and color. In addition, these compounds improve human nutrition and health. Stone fruits are an important source of an array of secondary metabolites that may reduce the risk of different diseases. The first part of this review is dedicated to the description of the main secondary organic compounds found in plants which include (a) phenolic compounds, (b) terpenoids/isoprenoids, and (c) nitrogen or sulfur containing compounds, and their principal biosynthetic pathways and their regulation in stone fruit. Then, the type and levels of bioactive compounds in different stone fruits of the Rosaceae family such as peach ( Prunus persica ), plum ( P. domestica , P. salicina and P. cerasifera) , sweet cherries ( P. avium ), almond kernels ( P. dulcis , syn. P. amygdalus ), and apricot ( P. armeniaca ) are presented. The last part of this review encompasses pre- and postharvest treatments affecting the phytochemical composition in stone fruit. Appropriate management of these factors during pre- and postharvest handling, along with further characterization of phytochemicals and the regulation of their synthesis in different cultivars, could help to increase the levels of these compounds, leading to the future improvement of stone fruit not only to enhance organoleptic characteristics but also to benefit human health.

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Ultraviolet-B radiation applied to detached peach fruit: A study of free radical generation by EPR spin trapping

Cited by 21 publications

References 31 publications

Hydrogen peroxide, nitric oxide and UV RESISTANCE LOCUS8 interact to mediate UV-B-induced anthocyanin biosynthesis in radish sprouts

Hydrogen peroxide, nitric oxide and UV RESISTANCE LOCUS8 interact to mediate UV-B-induced anthocyanin biosynthesis in radish sprouts

Combined transcriptomic and proteomic analysis constructs a new model for light‐induced anthocyanin biosynthesis in eggplant (Solanum melongena L.)

Stone Fruit as Biofactories of Phytochemicals With Potential Roles in Human Nutrition and Health

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