Short-term UV-B radiation affects photosynthetic performance and antioxidant gene expression in highbush blueberry leaves

Inostroza‐Blancheteau, Claudio; Acevedo, Patricio; Loyola, Rodrigo; Arce‐Johnson, Patricio; Alberdi, Miren; Reyes‐Díaz, Marjorie

doi:10.1016/j.plaphy.2016.06.019

Cited by 41 publications

(21 citation statements)

References 62 publications

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“…In this study, the total phenolic contents of P. vulgaris spicas under UV solar exclusion were significantly higher than those under control treatment. Similar results were previously obtained in other plants [50, 51]. P. vulgaris under UV exclusion treatment had a significantly higher H 2 O 2 content than plants grown under the control treatment.…”

Section: Discussionsupporting

confidence: 89%

Plant morphology, physiological characteristics, accumulation of secondary metabolites and antioxidant activities of Prunella vulgaris L. under UV solar exclusion

Chen

Xue-rong

et al. 2019

Biol Res

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Background Prunella vulgaris L. has been an important medicinal plant for the treatment of thyroid gland malfunction and mastitis in China for over 2000 years. There is an urgent need to select effective wavelengths for greenhouse cultivation of P. vulgaris as light is a very important factor in P. vulgaris growth. Here, we described the effects of natural light (control) and UV solar exclusion on the morphological and physiological traits, secondary metabolites contents and antioxidant activities of P. vulgaris . Results The results showed that UV solar exclusion resulted in remarkable alterations to morphological and biomass traits; significantly reduced the chlorophyll a, chlorophyll b and total chlorophyll contents; significantly enhanced the ratio of chlorophyll a to b; and significantly increased the carotenoid and anthocyanin contents in P. vulgaris . UV solar exclusion significantly increased the catalase (CAT) and peroxidase (POD) activities, increased superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities and slightly decreased the glutathione (GSH) content. UV solar exclusion significantly increased the soluble sugar and H 2 O 2 contents and increased the soluble protein content but significantly decreased the proline content and slightly decreased the MDA content. The secondary metabolite contents (total phenolics, rosmarinic acid, caffeic acid, hyperoside, ursolic acid and oleanolic acid) and in vitro antioxidative properties (DPPH· and ABTS· + scavenging activities) were significantly increased in P. vulgaris spicas under UV solar exclusion. Additionally, the total polysaccharide and total flavonoids contents were slightly increased by UV solar exclusion. The salviaflaside content was significantly reduced by UV solar exclusion. Conclusion Our study demonstrated that P. vulgaris activates several antioxidant defence systems against oxidative damage caused by UV solar exclusion.

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Section: Discussionsupporting

confidence: 89%

Plant morphology, physiological characteristics, accumulation of secondary metabolites and antioxidant activities of Prunella vulgaris L. under UV solar exclusion

Chen

Xue-rong

et al. 2019

Biol Res

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“…These represent new measurement and diagnosis technology in vivo [11,38]. The fluorescence parameters of the stress-tolerant cultivars of blueberry were higher or more stable than those of the sensitive cultivars under stressful environments, such as high temperature [39], aluminum exposure [40], ultraviolet radiation [41], and high pH [7]. In this study, the Fv/Fm and Y(II) values of the two blueberry cultivars showed a downward trend with increasing soil pH, indicating that the activity of PSII and the carbon fixation ability decreased.…”

Section: Discussionmentioning

confidence: 99%

Growth, Fruit Yield, Photosynthetic Characteristics, and Leaf Microelement Concentration of Two Blueberry Cultivars under Different Long-Term Soil pH Treatments

et al. 2019

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Soil pH is a key factor affecting the growth of blueberries. Understanding the response mechanism of blueberries to different pH values and selecting suitable evaluation indexes are the basis of breeding new blueberry cultivars with high pH tolerances. The effects of different soil pH treatments for 17 months on the plant growth, fruit yield, photosynthetic characteristics, and leaf microelement concentration of Vaccinium ashei Reade ‘Climax’ and V. corymbosum hybrid ‘Chaoyue No. 1′ were studied. Plant height, main stem diameter, branch number per plant, leaf dry weight, stem dry weight, root dry weight, and total dry weight decreased with increasing soil pH. With an increase in soil pH, the first flowering date, 50% flowering date, first ripening date, and 50% ripening date of the two cultivars were postponed, and the flower bud numbers per plant, the floret numbers per bud, and yield per plant showed a downward trend. Moreover, the fruit quality decreased, which was reflected in the increase in the titratable acid content (TA) and the decrease in the total soluble solids content (TSS) and the TSS:TA ratio in the high pH treatment. With increasing soil pH, the chlorophyll content index (CCI), maximal photochemical efficiency of the PSII (Fv/Fm), quantum photosynthetic yield of the PSII (Y(II)) and net photosynthetic rate (Pn) of the two cultivars showed a downward trend, and some microelement concentrations in the leaves were imbalanced. Under high pH treatment, ‘Chaoyue No. 1′ had a relatively higher plant biomass and fruit yield, so it had a stronger tolerance to high pH than ‘Climax’ did. More strongly acidified rhizosphere soil capacity, as well as higher CCI, Fv/Fm, Y(II), and Pn values were the main reasons for the high pH tolerance of ‘Chaoyue No. 1′. Compared with destructive biomass indicators such as plant weight, nondestructive indicators such as CCI, Fv/Fm, and Y(II) can be more valuable indicators for fast and accurate evaluation of blueberry tolerance to high pH at early stages of treatment.

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“…More recently, the induction of plant GST activity and/or gene expression by UV-B, UV-A, or UV-C stress was verified in several other higher plant species: Brassica rapa L. (Zhou et al, 2007), Vitis vinifera L. (Kobayashi et al, 2010; Pontin et al, 2010), Brassica oleracea L. var. italica (Mewis et al, 2012), Miscanthus sinensis Andersson (Seong et al, 2015), Vaccinium corymbosum L. (Inostroza-Blancheteau et al, 2016), and Azolla sp. plants (Prasad et al, 2016).…”

Section: Gst Gene Expression and Enzyme Activity Are Affected By Lighmentioning

confidence: 99%

Plant Glutathione Transferases and Light

et al. 2019

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The activity and expression of glutathione transferases (GSTs) depend on several less-known endogenous and well-described exogenous factors, such as the developmental stage, presence, and intensity of different stressors, as well as on the absence or presence and quality of light, which to date have received less attention. In this review, we focus on discussing the role of circadian rhythm, light quality, and intensity in the regulation of plant GSTs. Recent studies demonstrate that diurnal regulation can be recognized in GST activity and gene expression in several plant species. In addition, the content of one of their co-substrates, reduced glutathione (GSH), also shows diurnal changes. Darkness, low light or shade mostly reduces GST activity, while high or excess light significantly elevates both the activity and expression of GSTs and GSH levels. Besides the light-regulated induction and dark inactivation of GSTs, these enzymes can also participate in the signal transduction of visible and UV light. For example, red light may alleviate the harmful effects of pathogens and abiotic stressors by increasing GST activity and expression, as well as GSH content in leaves of different plant species. Based on this knowledge, further research on plants (crops and weeds) or organs and temporal regulation of GST activity and gene expression is necessary for understanding the complex regulation of plant GSTs under various light conditions in order to increase the yield and stress tolerance of plants in the changing environment.

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Short-term UV-B radiation affects photosynthetic performance and antioxidant gene expression in highbush blueberry leaves

Cited by 41 publications

References 62 publications

Plant morphology, physiological characteristics, accumulation of secondary metabolites and antioxidant activities of Prunella vulgaris L. under UV solar exclusion

Plant morphology, physiological characteristics, accumulation of secondary metabolites and antioxidant activities of Prunella vulgaris L. under UV solar exclusion

Growth, Fruit Yield, Photosynthetic Characteristics, and Leaf Microelement Concentration of Two Blueberry Cultivars under Different Long-Term Soil pH Treatments

Plant Glutathione Transferases and Light

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