Short-term UV-B radiation effects on morphology, physiological traits and accumulation of bioactive compounds in <i>Prunella vulgaris</i> L.

Zhang, Xuerong; Chen, Yuhang; Q, Guo; Wang, Wenming; Liu, Li; Fan, Jing; Cao, Liping; Li, Chen

doi:10.1080/17429145.2017.1365179

Cited by 46 publications

(34 citation statements)

References 59 publications

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“…Agati et al [47] demonstrated that PAR favored the flavonoids accumulation especially the quercetin in the crop. UVA + UVB UV light increased phenolic and carotenoid contents in both varieties [25] Prunella vulgaris UV-B UV-B light increased total flavonoid, rosmarinic acid, caffeic acid content [69] In addition to UV light, visible light is another critical factor for vegetables and fruits growth. It is well known that blue light plays an important role in chloroplast development, chlorophyll formation and stomata opening, while red light is crucial to plant growth such as stem elongation, leaf expansion, and photosynthesis [48].…”

Section: Light Spectramentioning

confidence: 99%

Response of Bioactive Phytochemicals in Vegetables and Fruits to Environmental Factors

et al. 2019

EJNFS

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This review focused on the influence of environmental systems and/or factors including high tunnel, UV and visible light, fertilization, and irrigation on bioactive compounds in vegetables and fruits. Most studies reported that high tunnel reduced chicoric acid and luteolin in vegetables including lettuce and pac choi, and fruits including raspberry and tomato versus open field, although a few studies demonstrated that high tunnel did not significantly impact on the bioactive compounds. Light including UV such as photosynthetically active radiation (PAR), UV-A, and UV-B, and visible light especially red and blue light, significantly stimulated biosynthesis of anthocyanins, flavonoids, and phenolics, and promoted their contents in vegetables such as onion and spinach, and fruits for example blueberry and strawberry. The effect of fertilization including nitrogen, phosphorus, and potassium on bioactive phytochemicals (carotenoids, flavonoids, polyphenols) in vegetables (broccoli, kale) or fruits (tomato) varied among the cultivars. Water deficit usually increased anthocyanins, flavonoids, and phenolic acids in vegetables such as lettuce and red beet, and fruits including grape and pomegranate. Taken together, the bioactive compounds in vegetables and fruits in response to environmental factors were species- and varieties- dependent. The negative effect of environmental factors on bioactive compounds in vegetables and fruits can be overcome by selecting appropriate cultivars, while the positive effect can be further manipulated in horticultural production for potential consumer’s health benefits.

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Section: Light Spectramentioning

confidence: 99%

Response of Bioactive Phytochemicals in Vegetables and Fruits to Environmental Factors

et al. 2019

EJNFS

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“…The depletion of the stratospheric ozone layer has become a serious global environmental problem that has led to an increase in the amount of ultraviolet-B radiation (UV-B, 280–320 nm) reaching the Earth’s surface, and the amount of UV-B radiation on the Earth’s surface will continue to increase in the coming decades [ 1 , 2 ]. In general, many studies have reported that UV-B radiation has harmful effects on the growth, physiology and productivity of plants [ 3 , 4 , 5 ]. However, in recent years, some studies have found that UV-B radiation can have beneficial effects on the secondary metabolism of medicinal plants [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of UV-B Radiation on the Content of Bioactive Components and the Antioxidant Activity of Prunella vulgaris L. Spica during Development

Chen

Zhang

et al. 2018

Molecules

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The effects of UV-B radiation on the content of bioactive components and the antioxidant activity of Prunella vulgaris L. spica during development were studied. The experimental design involved two levels of UV-B radiation intensity (0 and 120 μW cm−2 nm−1). The results showed that the contents of total flavonoids, rosmarinic acid, caffeic acid and hyperoside, as well as the antioxidant capacities (DPPH● and ABTS•+ scavenging activities), in the spicas significantly decreased during spica development. The content of salviaflaside in the spicas significantly increased during development. The highest contents of total flavonoids, rosmarinic acid, and caffeic acid and the highest antioxidant activities were found in spicas in the full-flowering stage, while the highest content of hyperoside was found in spicas in the bud stage. In addition, the highest content of salviaflaside was found in spicas in the mature-fruiting stage. UV-B radiation significantly promoted the synthesis of secondary metabolites, increased the contents of the main bioactive components in the three developmental stages of isolated dried spicas, and significantly increased the DPPH● and ABTS•+ scavenging activities of P. vulgaris spicas in the mature-fruiting stage. Moreover, the total flavonoids content was positively correlated with the DPPH● and ABTS•+ scavenging activities, and the correlation with the DPPH● scavenging activity was very strong. This result shows that the highest contents of the main bioactive components in the spicas were not all found in the same developmental stages of P. vulgaris. Our research revealed that the best stage for harvesting P. vulgaris spica was between the bud stage and the full-flowering stage since harvesting at this point provides a higher content of bioactive components and a higher antioxidant capacity, which is relevant for medicinal applications.

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“…Phenolic compounds may play an important role as antioxidants by scavenging the free radicals produced under oxidative stress (Giorgi et al, 2009 andBernal et al, 2013). It is widely accepted that the metabolism of phenolic compounds is up-regulated by a wide range of environmental stresses, such as the UV-B radiation (Luis et al, 2007;Bernal et al, 2015;Shen et al, 2015;Zhang et al, 2017)…”

Section: Total Phenolic Compounds (Tpc)mentioning

confidence: 99%

“…UV-B radiation increased biomass in Ocimum basilicum L (Sakalauskaite et al, 2013),. Laurus nobilis L.(Bernal et al, 2015) and Prunella vulgaris L (Zhang et al, 2017). whereas, in Catharanthus roseus L (Guo et al, 2014),.…”

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confidence: 99%

Physiological and Biochemical Changes Induced by UV-B Radiation in Rosemary Plants Grown Under Salinity Stress

Moghaddam¹,

Arouiee²,

Moshtaghi³

et al. 2019

J. Ecol. Eng.

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Plants are exposed to solar ultraviolet radiation due to use of sunlight for photosynthesis. Additionally, salinity in soil or water influences the plant productivity and quality considerably. Moreover, when plants are simultaneously exposed to multiple stresses, one form of stress can affect the response to other stress. Particularly, it has been shown that they can benefit from dual tolerance as salinity and UV-B radiation are applied together. In order to understand the effects of UV-B radiation and salinity stress on some physiological and biochemical parameters, one-year-old cuttings of rosemary plants were grown under different levels of ultraviolet B radiation (0, 4.32 and 6.05 kJ m-2 d-1) and salinity stress (control, 50, 100 and 150 mM NaCl). The results showed that 4.32 kJ m-2 d-1 UV-B treatment significantly increased plant biomass up to 17.9% as compared to control. However, by increasing salinity to 150 mM, plant biomass significantly decreased up to 18.1%, as compared to control. Regardless of UV-B treatments, plants, grown under 100 mM salinity stress, had produced 2.8 times higher total phenolic compounds (TPC) and also have greater antioxidant activity (33.1%) in comparison to control. Both treatments, enhanced UV-B radiation and salinity stress, significantly increased the concentration of proline, hydrogen peroxide (H 2 O 2) and malondealdehyde (MDA). In relation of total soluble sugar (TSS) and ion content, both treatments acted in an opposing manner. In turn, the enhanced UV-B radiation decreased concentration of TSS and the Na + content in leaves, salinity stress increased the concentration of TSS, as well as the Na + content in leaves and root. The plants grown under 150 mM salinity level accumulated 5.32 and 2.83 times higher Na + ions in leaves and roots, respectively, than control. In addition, salinity significantly decreased the relative water content (RWC), photosynthetic pigments and K + content in leaves and roots. The interaction between UV-B irradiation and salinity showed that the UV-B radiation improved the K + content in leaves, RWC and membrane stability and consequently resulted in a better tolerance of rosemary to salinity.

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Short-term UV-B radiation effects on morphology, physiological traits and accumulation of bioactive compounds in Prunella vulgaris L.

Cited by 46 publications

References 59 publications

Response of Bioactive Phytochemicals in Vegetables and Fruits to Environmental Factors

Response of Bioactive Phytochemicals in Vegetables and Fruits to Environmental Factors

Effects of UV-B Radiation on the Content of Bioactive Components and the Antioxidant Activity of Prunella vulgaris L. Spica during Development

Physiological and Biochemical Changes Induced by UV-B Radiation in Rosemary Plants Grown Under Salinity Stress

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