The effects of different UV‐B radiation intensities on morphological and biochemical characteristics in <i>Ocimum basilicum</i> L.

Sakalauskaitė, J.; Viškelis, Pranas; Dambrauskienė, E.; Sakalauskienė, S.; Samuolienė, G.; Brazaitytė, A.; Duchovskis, Pavelas; Urbonavičienė, Dalia

doi:10.1002/jsfa.5879

Cited by 66 publications

(44 citation statements)

References 37 publications

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“…For example, UV-B and UV-C stimulates phenolics, stilbenes and overall antioxidant activity in pigeon pea (Cajanus cajan) leaves (Colquhoun et al 2013, Wei et al 2013. A supplementary UV-B treatment also affects the total antioxidant activity in basil (Sakalauskaitė et al 2013). Carotenoids are responsible for the orange color of vegetables, like carrots, and the color intensity is considered a reliable indicator of a higher nutritive value (Goncalves et al 2010).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Total Phenolic Contents and Antioxidant Activity of Carrot Callus Extracts as Affected by Phenylalanine Precursor

Arafa¹,

Ibrahim²,

Aly³

2016

Plant Tissue Cult. & Biotech.

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Carrot (Daucus carota) is a valuable plant with both therapeutic and horticultural potential. Stem, petiole and root derived calli of carrot were obtained on solid MS supplemented with 1 mg/l BAP + 2 mg/l NAA. Callus cultures supplemented with different L-phenylalanine (PHE) concentrations under light and dark conditions were evaluated for their antioxidant activity and total phenolic contents. The authors showed that PHE supplementation in Daucus carota cultures was necessary to raise the extraction yield percentage. Antioxidant assays such as DPPH scavenging activity and β-carotene bleaching have been carried out. In DPPH system, callus extracts from different explants grown under light conditions displayed lower DPPH radical scavenging activity at all PHE levels compared with that grown under dark conditions. Moreover, under both light and dark conditions callus cultures grown on MS supplemented with 1 mg/l BAP + 2 mg/l NAA plus 1000 mg/l PHE were recorded to yield the maximum values as antioxidant activities. Regarding β-carotene bleaching assay, under light condition the callus extract of stem, root and petiole recorded an inhibition of linolic acid 47.9, 41.43 and 39%) which is lower compared with dark grown cultures, respectively (52.46, 72.71 and 73.26%). Effect of different concentrations of phenylalanine on the total phenolic content of carrot callus extract examined under light conditions varied from 0.33 to 2 mg/g DW and 0.51 to 3.69 mg/g DW under dark conditions as expressed *Authors for correspondence: . 208Arafa et al.by gallic acid equivalent (GAE). Our results have demonstrated that Daucus carota can be further extended to exploit its possible application for the preservation of food products as well as a health supplement and neutraceutical.

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Section: Resultsmentioning

confidence: 99%

Evaluation of Total Phenolic Contents and Antioxidant Activity of Carrot Callus Extracts as Affected by Phenylalanine Precursor

Arafa¹,

Ibrahim²,

Aly³

2016

Plant Tissue Cult. & Biotech.

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“…This is especially true for peanut plants at R7 compared to R1, as trigonelline levels were higher by 54.3 μg·g [39]. Low levels of UV-B can be used as a regulator for inducing the production of secondary metabolites [40]. However, higher levels of trigonelline in peanut plants have been linked to lower seed yield [37].…”

Section: Comparing Stress Responses Across Genotypes and Growth Stagementioning

confidence: 97%

“…Significant positive correlations (r s 0.29 -0.74, P ≤ 0.05) were found for trigonelline concentrations and UV-B exposure times. With longer exposure times of 180 min for plants at R7, trigonelline biosynthesis began as early as 10 days after treatment with 154.6 μg·g −1 DW and remained or increased by up to 71.5 μg•g −1 DW (46.3%) throughout the sampling intervals (10,20,30,40, and 50 days after treatment) to a final value of 226.1 μg•g −1 DW. All four genotypes at R7 exhibited trigonelline concentrations 47.3% to 52.4% (71.6 to 96.5 μg·g −1 DW) higher than individuals at R1.…”

mentioning

confidence: 99%

Stress Responses of Peanut (<i>Arachis hypogaea</i> L.) Genotypes as Measured by Trigonelline Content after Exposure to UV-B Radiation

Willmon¹,

Devireddy²,

Inupakutika³

et al. 2017

AJPS

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UV-B radiation has been widely documented as a stressor for plants that can cause decreased biomass, reduction in photosynthesis, and oxidative stress. Trigonelline is a secondary metabolite that is biosynthesized in some plants in response to abiotic stress such as UV-B irradiation. The objectives of this study were to examine biochemical stress responses for peanut plants (Arachis hypogaea L.) of four different genotypes (Spanish, Valencia, Virginia, and Runner) after exposure at various lengths to UV-B radiation and to examine the alteration of trigonelline biosynthesis due to the age of the plants. Peanut plants from the genotypes were exposed to UV-B radiation at three exposure times (60, 120, and 180 min); plants from two growth stages, the flowering (R1) and early maturity (R7), were used. Significant positive correlations (r s 0.29 -0.74, P ≤ 0.05) were found for trigonelline concentrations and UV-B exposure times. With longer exposure times of 180 min for plants at R7, trigonelline biosynthesis began as early as 10 days after treatment with 154.6 μg·g −1 DW and remained or increased by up to 71.5 μg•g −1 DW (46.3%) throughout the sampling intervals (10,20,30,40, and 50 days after treatment) to a final value of 226.1 μg•g −1 DW. All four genotypes at R7 exhibited trigonelline concentrations 47.3% to 52.4% (71.6 to 96.5 μg·g −1 DW) higher than individuals at R1. Trigonelline biosynthesis at R7 was significantly (P < 0.05) affected by all levels of UV-B exposure, whereas trigonelline concentrations at R1 were significantly influenced (P < 0.05) by only the longer exposure times (120 and 180 min). No statistically significant difference was found in trigonelline concentration among the four different genotypes. UV-B irradiation had the greatest effect on plants at R7 after 120 and 180 min of exposure, as 15 out of 20 (75%) individuals had significantly higher (P < 0.05) trigonelline

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“…However, variations are seen in the morphological parameters depending on the plant variety and exposure time (Sakalauskaite et al 2013 ). UV radiations have negative effects on germinating pollen tubes leading to lowered crop yields (Gao et al 2004 ;Koti et al 2004 ).…”

Section: Effect Of Uv-b On Plants and Their Damage Control Mechanismsmentioning

confidence: 99%

UV-B Photoreceptors, Their Role in Photosignaling, Physiological Responses, and Abiotic Stress in Plants

Choudhury

Veetil

Kateriya

2015

Elucidation of Abiotic Stress Signaling in Plants

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Light is a major developmental cue that infl uences critical aspects of the development, morphology, and metabolism in plants. Hence, the need arose for the evolution of a class of molecule solely responsible for "sensing" light. Photoreceptors are commonly classifi ed based on their chemical nature and photochemistry of their chromophore, and at present, six distinct classes of the photoreceptors are known in the nature. Two putative families have been identifi ed more recently. The electromagnetic spectrum reaching the earth's surface also comprises of ultraviolet radiation, a form of abiotic stress, in the wavelength range from 100 to 400 nm. This chapter mainly deals with the various classes of plant photoreceptors known, the evolution of a UV-B-specifi c photoreceptor, and the signaling pathways involved to effectively bring about the UV-B-specifi c stress responses in plants. Importance of "omics"-based approaches would also be discussed for deciphering photoreceptormediated cellular signaling and its relevance to stress response in plants.

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The effects of different UV‐B radiation intensities on morphological and biochemical characteristics in Ocimum basilicum L.

Abstract: These results indicate that the application of short-exposure UV-B radiation beneficially influenced both growth parameters and biochemical constituents in young and mature basil plants.

Cited by 66 publications

References 37 publications

Evaluation of Total Phenolic Contents and Antioxidant Activity of Carrot Callus Extracts as Affected by Phenylalanine Precursor

Evaluation of Total Phenolic Contents and Antioxidant Activity of Carrot Callus Extracts as Affected by Phenylalanine Precursor

Stress Responses of Peanut (<i>Arachis hypogaea</i> L.) Genotypes as Measured by Trigonelline Content after Exposure to UV-B Radiation

UV-B Photoreceptors, Their Role in Photosignaling, Physiological Responses, and Abiotic Stress in Plants

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The effects of different UV‐B radiation intensities on morphological and biochemical characteristics in Ocimum basilicum L.

Abstract: These results indicate that the application of short-exposure UV-B radiation beneficially influenced both growth parameters and biochemical constituents in young and mature basil plants.

Cited by 66 publications

References 37 publications

Evaluation of Total Phenolic Contents and Antioxidant Activity of Carrot Callus Extracts as Affected by Phenylalanine Precursor

Evaluation of Total Phenolic Contents and Antioxidant Activity of Carrot Callus Extracts as Affected by Phenylalanine Precursor

Stress Responses of Peanut (&lt;i&gt;Arachis hypogaea&lt;/i&gt; L.) Genotypes as Measured by Trigonelline Content after Exposure to UV-B Radiation

UV-B Photoreceptors, Their Role in Photosignaling, Physiological Responses, and Abiotic Stress in Plants

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Stress Responses of Peanut (<i>Arachis hypogaea</i> L.) Genotypes as Measured by Trigonelline Content after Exposure to UV-B Radiation