Subtle changes in solar radiation under a green-to-red conversion film affect the photosynthetic performance and chlorophyll fluorescence  of sweet pepper

Yoon, Hyo In; Kang, Jun Hyeun; Kang, Woo Hyun; Son, Jung Eek

doi:10.32615/ps.2020.057

Cited by 13 publications

(5 citation statements)

References 58 publications

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“…On the one hand, an increase in respiration intensity may indicate an increase in growth processes associated with the accumulation of biomass; on the other hand, increased respiration activity is a sign of stress in plants. Previously, in a series of works by different scientific groups, it was shown that relatively small changes in the lighting spectrum of plants caused by photoconversion covers have a significant effect on both the productivity of plants and the intensity of physiological processes in them [26][27][28][29][30]33,35,36,55,[89][90][91][92][93][94][95][96][97][98][99][100][101][102][103][104][105], which correlates with our data.…”

Section: Supplementary Materialssupporting

confidence: 91%

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

Paskhin,

Aiyyzhy,

Pobedonostsev

et al. 2023

J. Compos. Sci.

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In this work, we investigated the effect of photoconversion covers based on ruby (chromium-doped alumina (Al2O3:Cr3+)) particles (PCC-R) on the growth and development of lettuce (Lactuca sativa) plants. Ruby particles (from 100 nm to 2 μm) were obtained by the sequential application of spall laser ablation and further laser fragmentation. The content of chromium ions relative to aluminum ions in the nanoparticles was 3.3 × 10−3. The covers with different densities of applied ruby particles (2 × 107 m−2 (PCC-R7), 2 × 108 m−2 (PCC-R8), 2 × 109 m−2 (PCC-R9)) were studied in the present work. The PCC-Rs had two wide bands of luminescence excitation. The first one was from 350 nm to 450 nm with a maximum at 405 nm, and the second one was from 500 nm to 600 nm with a peak at 550 nm. Synthesized covers emitted in the range of 650 nm to 750 nm, with a peak at 695 nm. It has been shown that PCC-R8, in contrast to PCC-R7 and PCC-R9, provided an increase in yield by 40% and was characterized by increased water use efficiency during dark respiration and assimilation of carbon dioxide in plants. It is assumed that the observed positive effect of PCC-R8 photoconversion covers is associated with the activation of regulatory mechanisms due to a qualitative change in the light spectrum.

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Section: Supplementary Materialssupporting

confidence: 91%

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

Paskhin,

Aiyyzhy,

Pobedonostsev

et al. 2023

J. Compos. Sci.

View full text Add to dashboard Cite

show abstract

“…Before making assumptions about the reasons for the positive effect of the PCF, it should be noted that the passing of light through glass coated with luminescent nanopar-ticles was not accompanied by a noticeable increase in the intensity of the visible range. However, in the present work, as well as in a number of other works, an increase in plant productivity was demonstrated [25][26][27][28][29][30][31][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. Nanosized particles can act as a protectant against UV owing to their capability to absorb and scatter ultraviolet radiation.…”

Section: Discussionmentioning

confidence: 70%

Cultivation of Solanum lycopersicum under Glass Coated with Nanosized Upconversion Luminophore

et al. 2021

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The effect of upconverting luminescent nanoparticles coated on glass on the productivity of Solanum lycopersicum was studied. The cultivation of tomatoes under photoconversion glass led to an increase in plant productivity and an acceleration of plant adaptation to ultraviolet radiation. An increase in the total leaf area and chlorophyll content in the leaves was revealed in plants growing under the photoconversion glass. Plants growing under the photoconversion glass were able to more effectively utilize the absorbed light energy. The results of this study suggest that the spectral changes induced by photoconversion glass can accelerate the adaptation of plants to the appearance of ultraviolet radiation.

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“…For example, the absorbance of a spectral conversion film decreased by 11% without nano-oxide filters or by 2–8% with nano-oxide filters after one year of exposure to sunlight [ 12 ]. In contrast, exposure to the sun for 49 days reduced the conversion efficiency of a film by only 0.2%, indicating that the film was relatively stable [ 75 ]. In addition to longevity, a barrier to commercial implementation of spectral conversion films is the cost to purchase, install, and maintain them in a greenhouse setting.…”

Section: Discussionmentioning

confidence: 99%

Spectral-conversion film potential for greenhouses: Utility of green-to-red photons conversion and far-red filtration for plant growth

Park

Runkle

2023

PLoS ONE

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Although green (G, 500 to 600 nm) and far-red (FR, 700 to 800 nm) light play important roles in regulating plant growth and development, they are often considered less useful at stimulating photosynthesis than red (R, 600 to 700 nm) and blue (B, 400 to 500 nm) light. Based on this perception, approaches to modifying the transmission of greenhouse glazing materials include (1) conversion of G photons from sunlight into R photons and (2) exclusion of the near-infrared (>700 nm) fraction of sunlight. We evaluated these approaches using simulated scenarios with light-emitting diodes to determine how partial and complete substitution of G with R light and exclusion of FR light affected the growth of lettuce and tomato grown indoors. The substitution of G with R light had little or no effect on fresh and dry mass of tomato. However, with the presence of FR light, fresh and dry mass of lettuce increased by 22–26% as G light was increasingly substituted with R light. In tomato, excluding FR inhibited plant height, leaf area, and dry mass by 60–71%, 10–37%, and 20–44%, respectively. Similarly, in lettuce, excluding FR inhibited plant diameter, leaf length, and dry mass by 15–23%, 23–33%, or 28–48%, respectively. We conclude that the spectral conversion of G-to-R photons can promote plant growth in at least some crop species, such as lettuce, while the exclusion of FR decreases crop growth and yield.

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Subtle changes in solar radiation under a green-to-red conversion film affect the photosynthetic performance and chlorophyll fluorescence of sweet pepper

Cited by 13 publications

References 58 publications

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

Cultivation of Solanum lycopersicum under Glass Coated with Nanosized Upconversion Luminophore

Spectral-conversion film potential for greenhouses: Utility of green-to-red photons conversion and far-red filtration for plant growth

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