LED light quality intensifies leaf pigmentation in ornamental pot plants

Keyser, Ellen De; Dhooghe, Emmy; Christiaens, Annelies; Labeke, Marie-Christine Van; Huylenbroeck, Johan Van

doi:10.1016/j.scienta.2019.04.006

Cited by 39 publications

(27 citation statements)

References 20 publications

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“…They are located in plant cells mainly in peripheral tissues, such as the upper mesophyll, which is most susceptible to HIL (Trojak and Skowron 2017). In plants, anthocyanins, similar to all flavonoids, are among the protective compounds that function as an optical filter, which prevents increased ROS production in the photosynthetic electron transport chain (Mierziak et al 2014, Khan et al 2018, De Keyser et al 2019. The anthocyanin content varies significantly in different plant species, and their protection depends on various factors (Shoji et al 2010, Ali and Abbasi 2014, Rodriguez-Amaya 2019.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the anthocyanin-rich Arabidopsis thaliana mutant pap1-D was less susceptible to PA damage than WT plants when exposed to HIL [800 μmol(photon) m -2 s -1 , 2 h] at 10°C (Gould et al 2018). Anthocyanins are believed to be active in photoprotection when plants are subjected to prolonged exposure to the intense light of fluorescent lamps or natural sunlight at low temperatures when the capacities of other photoprotective mechanisms are exhausted (Berry and Björkman 1980, Gould et al 2018, De Keyser et al 2019. The anthocyanin content depends on the spectral characteristics of the light.…”

Section: Introductionmentioning

confidence: 99%

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Role of anthocyanin and carotenoids in the adaptation of the photosynthetic apparatus of purple- and green-leaved cultivars of sweet basil (Ocimum basilicum) to high-intensity light

Стеценко¹,

Pashkovsky²,

Voloshin³

et al. 2020

Photosynt.

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Comparative studies of the adaptation of green-and purple-leaved Ocimum basilicum varieties, which differ in carotenoid and anthocyanin contents, to high-intensity light have been carried out. The plants were grown for 21 d under white lightemitting diode providing different light intensities [300, 550, and 1,350 µmol(photon) m-2 s-1 ]. During the experiment, fresh mass and relative water content, photosynthetic pigment and anthocyanin content, amount of total free phenolic compounds, and the contents of thiobarbituric acid reactive substances and H2O2 were analysed. The fluorescent parameters, which characterized the PSII activity in the leaves (Fv/Fm, Y(II)), as well as the efficiency of dissipation of absorbed energy into heat (Y(NPQ),Y(NO)) and the fraction of the PSII open centres (qL), were determined. The obtained results are consistent with the concept of the important role of not only anthocyanin but also carotenoids in plant adaptation to high-intensity light.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Role of anthocyanin and carotenoids in the adaptation of the photosynthetic apparatus of purple- and green-leaved cultivars of sweet basil (Ocimum basilicum) to high-intensity light

Стеценко¹,

Pashkovsky²,

Voloshin³

et al. 2020

Photosynt.

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“…Nowadays, a large number of studies have shown that different LED lights trigger a cascade of responses to plant morphology, physiology, and metabolite accumulation in plants [18,19]. Reportedly, stem length and leaf area in tomato seedlings were both restricted under the higher BL to RL proportion [20,21].…”

Section: Introductionmentioning

confidence: 99%

Transcriptome and mebabolomic profiling: the effect of LED light quality on morphological traits, and phenylpropanoid-derived compounds accumulation in Sarcandra glabra seedlings

Xie

Chen

Zhou

et al. 2020

Preprint

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Background Sarcandra glabra is an evergreen and traditional Chinese herb, having medicinal significance as anti-oxidant, anti-bacterial, anti-inflammatory, and anti-tumor. Recently, China has initiated to establish cultivation of this plant in greenhouse under artificial light-emitting diodes (LED). However, little is known regarding the effects of the different LED lights on plant growth, accumulation pattern of secondary metabolites, and the molecular mechanism of Sarcandra glabra. Results Compared to white light (WL), the red light (RL) increased the height and decreased the stem diameter and leaf area, while blue light (BL) suppressed the height and leaf area. According to our transcriptome profiling, some differentially expressed genes (DEGs) were enriched in the phenylpropanoid biosynthesis. We identified 46 unigenes encoding for almost all known enzymes involved in phenylpropanoid biosynthesis, while the expression level of RNA-seq and qPCR were largely consistent. Meanwhile, we found 53 unigenes encoding R2R3-MYB proteins and 53 unigenes encoding bHLH proteins that several of them were related to flavonoids biosynthesis. Based on metabolomic profiling, a total of 454 metabolites were detected and the distribution of chemicals varied significantly. While flavonoids, phenolic acids, and tannins were mainly located in leaves; Organic acids, lignans and coumarins, and terpenoids were much more abundant in WG (root tissue under WL). Meanwhile, the yields of most flavonoids from BY (leaf tissue under BL) and the synthesis of primarily targeted compounds was lower than in WY (leaf tissue under WL) and RY (leaf tissue under RL). Instead, the leaves grown under RL exhibited a greater production of bioactive phytochemicals such as esculetin, fraxetin, esculin, and scopoletin. Conclusion These results provide further insight into the molecular mechanism of metabolites accumulation patterns in S. glabra under different light conditions, enabling the development of optimum breeding conditions for this plant.

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“…Recently, a large number of studies have shown that speci c LED lights have a signi cant effect on plant morphogenesis [18,19,21]. For instance, both the stem length and the leaf area of the tomato seedlings were signi cantly restricted at the higher BL/RL ratio [20,21].…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic and metabolomic profiling reveals the effect of LED light quality on morphological traits, and phenylpropanoid-derived compounds accumulation in Sarcandra glabra seedlings

Xie

Chen

Zhou

et al. 2020

Preprint

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Background: Sarcandra glabra is an evergreen and traditional Chinese herb with anti-oxidant, anti-bacterial, anti-inflammatory, and anti-tumor effects. Light is one of the most influential factor affecting the growth and quality of herbs. In recent times, the introduction of Light Emission Diode (LED) technology has been widely used for plants in greenhouse. However, the impact of such lights on plant growth and the regulatory mechanism of phenylpropanoid-derived compounds in S. glabra remain unclear. Results: The red LED light (RL) substantially increased the plant height and decreased the stem diameter and leaf area relative to the white LED light (WL), while the blue LED light (BL) significantly reduced the height and leaf area of S. glabra. According to transcriptomic profiling, 861, 378, 47, 10,033, 7917, and 6379 differentially expressed genes (DEGs) were identified among the groups of leaf tissue under BL (BY) vs. leaf tissue under RL (RY), BY vs. leaf tissue under WL (WY), RY vs. WY, root tissue under WL (WG) vs. WY, stem tissue under WL (WJ) vs. WG, and WJ vs. WY, respectively. We identified 46 genes encoding for almost all known enzymes involved in phenylpropanoid biosynthesis, e.g., phenylalanine ammonia lyase (PAL), chalcone synthase (CHS), and flavonol synthase (FLS). We found 53 genes encoding R2R3-MYB proteins and bHLH proteins, respectively, where several were related to flavonoids biosynthesis. A total of 454 metabolites were identified based on metabolomic profiling, of which 44, 87, and 296 compounds were differentially produced in WY vs. RY, WY vs. BY, and WY vs. WG. In BY there was a substantial reduction in the production of esculetin, caffeic acid, isofraxidin, and fraxidin, while the yields of quercitrin and kaempferol were significantly up-regulated. In RY, the contents of cryptochlorogenic acid, cinnamic acid, and kaempferol decreased significantly. Besides, in WG, the production of metabolites (e.g. chlorogenic acid, cryptochlorogenic acid, and scopolin) declined, while their yields increased significantly (e.g. esculetin, fraxetin, isofraxidin, and fraxidin).Conclusion: These results provide further insight into the regulatory mechanism of accumulation patterns of phenylpropanoid-derived compounds in S. glabra under various light conditions, allowing optimum breeding conditions to be developed for this plant.

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LED light quality intensifies leaf pigmentation in ornamental pot plants

Cited by 39 publications

References 20 publications

Role of anthocyanin and carotenoids in the adaptation of the photosynthetic apparatus of purple- and green-leaved cultivars of sweet basil (Ocimum basilicum) to high-intensity light

Role of anthocyanin and carotenoids in the adaptation of the photosynthetic apparatus of purple- and green-leaved cultivars of sweet basil (Ocimum basilicum) to high-intensity light

Transcriptome and mebabolomic profiling: the effect of LED light quality on morphological traits, and phenylpropanoid-derived compounds accumulation in Sarcandra glabra seedlings

Transcriptomic and metabolomic profiling reveals the effect of LED light quality on morphological traits, and phenylpropanoid-derived compounds accumulation in Sarcandra glabra seedlings

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LED light quality intensifies leaf pigmentation in ornamental pot plants

Cited by 39 publications

References 20 publications

Role of anthocyanin and carotenoids in the adaptation of the photosynthetic apparatus of purple- and green-leaved cultivars of sweet basil (Ocimum basilicum) to high-intensity light

Role of anthocyanin and carotenoids in the adaptation of the photosynthetic apparatus of purple- and green-leaved cultivars of sweet basil (Ocimum basilicum) to high-intensity light

Transcriptome and mebabolomic profiling: the effect of LED light quality on morphological traits, and phenylpropanoid-derived compounds accumulation in Sarcandra glabra seedlings

Transcriptomic and metabolomic profiling reveals&nbsp;the effect of LED light quality on morphological traits, and phenylpropanoid-derived compounds&nbsp;accumulation in Sarcandra glabra seedlings

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Transcriptomic and metabolomic profiling reveals the effect of LED light quality on morphological traits, and phenylpropanoid-derived compounds accumulation in Sarcandra glabra seedlings