Plant growth and metabolic changes in ‘Super Hot’ chili fruit (Capsicum annuum) exposed to supplemental LED lights

Yap, Esther Shiau Ping; Uthairatanakij, A.; Laohakunjit, Natta; Jitareerat, P.; Vaswani, Ashish; Magaña, Armando Alcázar; Morré, Jeff; Maier, Claudia S.

doi:10.1016/j.plantsci.2021.110826

Cited by 22 publications

(20 citation statements)

References 56 publications

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“…In C. delgadii plants, B light was the most efficient for the accumulation of flavonoid glycosides, such as astragalin and rutin. A stimulatory effect of this light quality on the accumulation of secondary metabolites was also noticed for other species, e.g., Rhodiola imbricate [88] and Capsicum annuum [89]. Wang et al [90] indicated that blue light-responsive genes were related to flavonoid synthesis in tea plants.…”

Section: Effect Of Light Quality On Secondary Metabolite Production A...mentioning

confidence: 79%

Enhancing In Vitro Production of the Tree Fern Cyathea delgadii and Modifying Secondary Metabolite Profiles by LED Lighting

Tomaszewicz

Cioć

Szewczyk

et al. 2022

Cells

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The tree ferns are an important component of tropical forests. In view of this, the enhancement of in vitro production of these plants is needed. Thus, the effect of different light-emitting diodes (LEDs) as well as control fluorescent lamps (Fl) and a 3-week-long period of darkness at the beginning of in vitro culture on micropropagation of the tree fern Cyathea delgadii Sternb. was analysed. Moreover, the photosynthetic pigment content and secondary metabolite profiles were estimated. The period of darkness contributed to a high production of somatic embryo-derived sporophytes and a low production of gametophytes. The formation of new sporophytes was stimulated by RBY (35% red, 15% blue, and 50% yellow) and B (100% blue) lights when the stipe explants or whole young sporophytes were used in the culture, respectively. The elongation of the roots and leaves was stimulated by RBfR light (35% red, 15% blue, and 50% far red), while root production increased under RBY light. The RB (70% red and 30% blue) and B lights stimulated the accumulation of chlorophyll better than Fl light. The most abundant metabolite found in the plant extracts was trans-5-O-caffeoylquinic acid (1.013 µg/mg of dry weight). The extract obtained from plants growing in a greenhouse had the best antioxidant activity.

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Section: Effect Of Light Quality On Secondary Metabolite Production A...mentioning

confidence: 79%

Enhancing In Vitro Production of the Tree Fern Cyathea delgadii and Modifying Secondary Metabolite Profiles by LED Lighting

Tomaszewicz

Cioć

Szewczyk

et al. 2022

Cells

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“…Capsaicin and dihydrocapsaicin make up 69% and 22% of the capsaicinoids in peppers, respectively, and have twice the pungency of nordihydrocapsaicin and homocapsaicin ( Kulkarni et al, 2017 ). The biosynthesis of capsaicinoids is assisted by branched-chain fatty acid and phenylpropanoid pathway, which begins with valine and phenylalanine ( Yap et al, 2017 ). However, the biosynthesis of secondary metabolites (capsaicin and dihydrocapsaicin) in this study was increased due to1.8 kg amino acid water-soluble fertilizer treatment compared to the control ( Table 4 ).…”

Section: Discussionmentioning

confidence: 99%

Influence of soil amendment of different concentrations of amino acid water-soluble fertilizer on physiological characteristics, yield and quality of “Hangjiao No.2” Chili Pepper

Bakpa

Xie

Zhang

et al. 2021

PeerJ

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Amino acids are well known as natural stimulators of plant growth and are widely used to promote crop yield and quality. Several studies have been conducted to investigate the effects of amino acid (s) as a foliar spray on a variety of plant species. However, the effects of soil amendment of different concentrations of amino acid water-soluble fertilizer on the physiological characteristics, yield, and quality of pepper remain unclear. Following this, three experimental sets of amino acid water-soluble fertilizer in the ratio 1.8: 2.7: 3.6 kg including control (CK) were conducted in Lintao county, Gansu province. The treatments were applied through furrow method at 6 weeks after planting. The results showed that physiological characteristics of the pepper plants, such as chlorophyll a (1.35 mg g−1), and b (0.67 mg g−1), total chlorophyll (2.02 mg g−1), carotenoid (0.63 mg g−1), ETR (26.25 µmol m−2s−1), Fv/Fm (0.75), Qp (0.92) contents of the leaves were increased by the 1.8 kg treatment while NPQ (71.37%) and root activity (2185.52 µg g−1 h−1) were improved by the 3.6 kg treatment compared to the control. Fertilization with 2.7 kg of amino acid water-soluble fertilizer also had a significant influence on fruit length (25.50 cm), and yield of pepper (37.92 t ha−1) while fruit diameter (24.51 mm), firmness (5.30 kg cm−2), fresh (48.10 g) and dry (4.71 g) weights were higher in the 1.8 kg treatment compared to the control. The lowest rate of fertilizer (1.8 kg) applied again resulted in a significant increase in soluble protein (79.79%), capsaicin (5.80 mg g−1), dihydrocapsaicin (1.08 mg g−1), vitamin C (72.33%) and the essential and non-essential amino acid contents of the pepper which ranged from (235.15 to 11.16 µg g−1) and (1,605.10 to 16.63 µg g−1) respectively, while soluble sugar (9.02%) was enhanced by 3.6 kg treatment compared to the control. The findings suggest that soil amendment with low concentration of amino acid water-soluble fertilizer (1.8 kg) could be successfully used to improve the physiological characteristics and fruit quality of peppers in vegetable production.

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“…However, pure blue LEDs stimulated the accumulation of capsaicinoids. Recently, detailed metabolomic analysis focusing on capsaicinoids has been carried out on the fruit of a super-hot chilli grown in a greenhouse (under sunlight) supplemented with monochromatic red, blue, and red + blue (1:1) lightings for 5 h ( Yap et al, 2021 ). Although the yield was the highest under sunlight (control), the additional blue LEDs significantly increased the accumulation of capsaicinoids, including C, DHC, n-DHC, h-C, and h-DHC ( Yap et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, detailed metabolomic analysis focusing on capsaicinoids has been carried out on the fruit of a super-hot chilli grown in a greenhouse (under sunlight) supplemented with monochromatic red, blue, and red + blue (1:1) lightings for 5 h ( Yap et al, 2021 ). Although the yield was the highest under sunlight (control), the additional blue LEDs significantly increased the accumulation of capsaicinoids, including C, DHC, n-DHC, h-C, and h-DHC ( Yap et al, 2021 ). These results indicate that applying LED technology in the growth of chilli plants can be utilised for modifying the quality of the product, especially the secondary metabolite contents.…”

Section: Introductionmentioning

confidence: 99%

Modulated Light Dependence of Growth, Flowering, and the Accumulation of Secondary Metabolites in Chilli

et al. 2022

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Chili is widely used as a food additive and a flavouring and colouring agent and also has great importance in health preservation and therapy due to the abundant presence of many bioactive compounds, such as polyphenols, flavonoids, carotenoids, and capsaicinoids. Most of these secondary metabolites are strong antioxidants. In the present study, the effect of light intensity and spectral composition was studied on the growth, flowering, and yield of chilli together with the accumulation of secondary metabolites in the fruit. Two light intensities (300 and 500 μmol m–2 s–1) were applied in different spectral compositions. A broad white LED spectrum with and without FR application and with blue LED supplement was compared to blue and red LED lightings in different (80/20 and 95/5%) blue/red ratios. High light intensity increased the harvest index (fruit yield vs. biomass production) and reduced the flowering time of the plants. The amount of secondary metabolites in the fruit varied both by light intensity and spectral compositions; phenolic content and the radical scavenging activity were stimulated, whereas capsaicin accumulation was suppressed by blue light. The red colour of the fruit (provided by carotenoids) was inversely correlated with the absolute amount of blue, green, and far-red light. Based on the results, a schematic model was created, representing light-dependent metabolic changes in chilli. The results indicated that the accumulation of secondary metabolites could be modified by the adjustment of light intensity and spectral composition; however, different types of metabolites required different light environments.

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Plant growth and metabolic changes in ‘Super Hot’ chili fruit (Capsicum annuum) exposed to supplemental LED lights

Cited by 22 publications

References 56 publications

Enhancing In Vitro Production of the Tree Fern Cyathea delgadii and Modifying Secondary Metabolite Profiles by LED Lighting

Enhancing In Vitro Production of the Tree Fern Cyathea delgadii and Modifying Secondary Metabolite Profiles by LED Lighting

Influence of soil amendment of different concentrations of amino acid water-soluble fertilizer on physiological characteristics, yield and quality of “Hangjiao No.2” Chili Pepper

Modulated Light Dependence of Growth, Flowering, and the Accumulation of Secondary Metabolites in Chilli

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