Influence of leaf temperature and blue light on the accumulation of rosmarinic acid and other phenolic compounds in Plectranthus scutellarioides (L.)

Dörr, Oliver Sebastian; Zimmermann, Benno F.; Kögler, Stine; Mibus, H.

doi:10.1016/j.envexpbot.2019.103830

Cited by 19 publications

(12 citation statements)

References 46 publications

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“…Moreover, the biosynthesis of flavonoids in plants is associated with their adaptability to the environment [ 8 , 9 ] or responses to environmental stimuli, such as light and plant growth regulators and drought stresses [ 9 ]. The accumulation of flavone glycosides in the leaves of Plectranthus scutellarioides has been shown to be affected by light condition [ 10 , 11 ]. The biosynthesis of flavonoids in regular tea cultivars was shown to be attenuated by low illumination [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (Camellia sinensis L.) Based on a Field Experiment

Jin

et al. 2021

Molecules

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Both UV and blue light have been reported to regulate the biosynthesis of flavonoids in tea plants; however, the respective contributions of the corresponding regions of sunlight are unclear. Additionally, different tea cultivars may respond differently to altered light conditions. We investigated the responses of different cultivars (‘Longjing 43’, ‘Zhongming 192’, ‘Wanghai 1’, ‘Jingning 1’ and ‘Zhonghuang 2’) to the shade treatments (black and colored nets) regarding the biosynthesis of flavonoids. For all cultivars, flavonol glycosides showed higher sensitivity to light conditions compared with catechins. The levels of total flavonol glycosides in the young shoots of different tea cultivars decreased with the shade percentages of polyethylene nets increasing from 70% to 95%. Myricetin glycosides and quercetin glycosides were more sensitive to light conditions than kaempferol glycosides. The principal component analysis (PCA) result indicated that shade treatment greatly impacted the profiles of flavonoids in different tea samples based on the cultivar characteristics. UV is the crucial region of sunlight enhancing flavonol glycoside biosynthesis in tea shoots, which is also slight impacted by light quality according to the results of the weighted correlation network analysis (WGCNA). This study clarified the contributions of different wavelength regions of sunlight in a field experiment, providing a potential direction for slightly bitter and astringent tea cultivar breeding and instructive guidance for practical field production of premium teas based on light regimes.

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Section: Introductionmentioning

confidence: 99%

Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (Camellia sinensis L.) Based on a Field Experiment

Jin

et al. 2021

Molecules

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“…Though the RA has been measured in this species earlier with the treatment of LED light to accumulate 51.0 6.4 mg g 1 DW, their studies were not associated with the genetic characters (Dörr et al 2019). A secondary metabolite is a dynamic array and changes with several environmental and genetic factors; therefore, the quantity of the natural product needs to be linked with the genetic characters of the plants (Kroymann 2011, Santra et al 2021.…”

Section: Discussionmentioning

confidence: 94%

Cytogenetical Evaluation and Quantification of Rosmarinic Acid in <i>Coleus scutellarioides</i> (L.) R.Br. an Allopolyploid Ornamental Medicinal Plant

2022

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Coleus scutellarioides (L.) Benth. is a very popular ornamental plant with attractive colorful foliage and also has several medicinal properties. A detailed cytogenetical study was conducted in the ʻRed Trailing Queenʼ horticultural form of this species. Hitherto, elaborate cytogenetic studies in this species received less attention and all of the previous studies on chromosomes are decades old. Thus, a reassessment and detailed cytogenetic study of this species are necessary. The karyotype study revealed that somatic cells contain 2n=48 small chromosomes, classified into metacentric to submetacentric. Meiotic chromosomes stained with acetocarmine and 4′,6-diamidino-2-phenylindole (DAPI) revealed the occurrence of univalent, bivalent, and multivalent associations of chromosomes along with secondary associations. The result confirms the allopolyploid origin of this plant. Meiotic irregularities like laggard chromosomes and multipolarity movement have also been found. In addition to that, variation in the chromosome numbers within pollen mother cells (PMCs) has been observed frequently. Pollen viability has been determined by fluorescein diacetate (FDA) and found to be very low. Rosmarinic acid (RA) is a natural polyphenol utilized as an anti-microbial, immunomodulatory, anti-diabetic, anti-allergic, anti-inflammatory, hepato-protectant, and renal-protectant agent. The RA content has been quantified through high-performance liquid chromatography (HPLC) to find out the medicinal efficacy. The present investigation on detailed cytogenetics study along with the pollen viability will be beneficial in the breeding program and accordingly useful in further improvement of this ornamental medicinal plant.

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“…We recently published an investigation were MPL were tested on the cultivation of Plectranthus scutellarioides in a climate chamber (Dörr et al, 2019). P. scutellarioides plants grown with artificial sunlight from MPL showed increased leaf thickness, higher biomass and plant height in comparison to HPS grown plants.…”

Section: Mpl An Alternative Lighting Source For Horticultural Industry?mentioning

confidence: 99%

Investigation on morphology and physiology of potted rose grown with light from microwave-plasma and high-pressure sodium lamps

Dörr¹,

Mibus²

2020

Europ.J.Hortic.Sci

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In this study, microwave-plasma lamps (MPL) that emit sun-like light were tested. Plant cultivation experiments using potted roses were conducted with supplemented assimilation light in greenhouse and climate chamber to investigate the influence of artificial sunlight on external and internal plant quality. Light from high-pressure sodium lamps (HPS) was used as a reference. Plant growth parameters were recorded, and the chlorophyll and flavonoid contents in rose leaves were determined. Furthermore, the photosynthetic rate and soluble sugar content were measured in the climate chamber. Potted roses grown under MPL light showed one week earlier flowering but displayed reduced branching and consequently, a lower number of flowers and buds compared with plants grown under HPS light. Photosynthesis rate at growth light intensity of leaves grown in climate chamber was increased in potted roses under MPL light, whereby the content of fructose and glucose was not significant different.

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Influence of leaf temperature and blue light on the accumulation of rosmarinic acid and other phenolic compounds in Plectranthus scutellarioides (L.)

Cited by 19 publications

References 46 publications

Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (Camellia sinensis L.) Based on a Field Experiment

Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (Camellia sinensis L.) Based on a Field Experiment

Cytogenetical Evaluation and Quantification of Rosmarinic Acid in <i>Coleus scutellarioides</i> (L.) R.Br. an Allopolyploid Ornamental Medicinal Plant

Investigation on morphology and physiology of potted rose grown with light from microwave-plasma and high-pressure sodium lamps

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