Induction of chlorophyll fluorescence in Tradescantia leaves acclimated to growth light of different intensities

Kalmatskaya, O. A.; Karavaev, V. A.; Тихонов, А. Н.

doi:10.1117/12.2523333

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…In general, not only the performance of the photosynthetic apparatus of plants is strongly influenced by the quality of light, but also their morphological and physiological properties [38]. In this work, we have tried to understand how the photosynthetic efficiency of plants and their growth are affected by different light quality and quantity.…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic apparatus performance of tomato seedlings grown under various combinations of LED illumination

et al. 2021

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It is already known that the process of photosynthesis depends on the quality and intensity of light. However, the influence of the new light sources recently used in horticulture, known as Light Emitting Diodes (LEDs), on this process is not yet fully understood. Chlorophyll a fluorescence measurement has been widely used as a rapid, reliable, and noninvasive tool to study the efficiency of the photosystem II (PSII) and to evaluate plant responses to various environmental factors, including light intensity and quality. In this work, we tested the responses of the tomato photosynthetic apparatus to different light spectral qualities. Our results showed that the best performance of the photosynthetic apparatus was observed under a mixture of red and blue light (R7:B3) or a mixture of red, green and blue light (R3:G2:B5). This was demonstrated by the increase in the effective photochemical quantum yield of PSII (Y[II]), photochemical quenching (qP) and electron transport rate (ETR). On the other hand, the mixture of red and blue light with a high proportion of blue light led to an increase in non-photochemical quenching (NPQ). Our results can be used to improve the production of tomato plants under artificial light conditions. However, since we found that the responses of the photosynthetic apparatus of tomato plants to a particular light regime were cultivar-dependent and there was a weak correlation between the growth and photosynthetic parameters tested in this work, special attention should be paid in future research.

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Section: Discussionmentioning

confidence: 99%

Photosynthetic apparatus performance of tomato seedlings grown under various combinations of LED illumination

et al. 2021

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“…Morphological and physiological characteristics of plants are strongly affected by the light intensity [ 13 , 15 – 17 , 30 , 31 ], colors ratio [ 32 , 33 ] and photoperiod [ 13 , 20 ]. In this research, the effects of these 3 factors on some morphological, physiological, and biochemical traits, and plants’ photosynthetic efficiency were studied to find out the best combination of light mode/s that can be optimal for rocket plants performance.…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic performance of rocket (Eruca sativa. Mill.) grown under different regimes of light intensity, quality, and photoperiod

et al. 2021

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In recent years, much effort has been devoted to understanding the response of plants to various light sources, largely due to advances in industry light-emitting diodes (LEDs). In this study, the effect of different light modes on rocket (Eruca sativa. Mill.) photosynthetic performance and other physiological traits was evaluated using an orthogonal design based on a combination between light intensity, quality, and photoperiod factors. Some morphological and biochemical parameters and photosynthetic efficiency of the plants were analyzed. Plants grew in a closed chamber where three light intensities (160, 190, and 220 μmol m-2 s-1) provided by LEDs with a combination of different ratios of red, green, and blue (R:G:B- 7:0:3, 3:0:7, and 5:2:3) and three different photoperiods (light/dark -10/14 h, 12/12 h, and 14/10 h) were used and compared with white fluorescent light (control). This experimental setup allowed us to study the effect of 9 light modes (LM) compared to white light. The analyzes performed showed that the highest levels of chlorophyll a, chlorophyll b, and carotenoids occurred under LM4, LM3, and LM1, respectively. Chlorophyll a fluorescence measurement showed that the best effective quantum yield of PSII photochemistry Y(II), non-photochemical quenching (NPQ), photochemical quenching coefficient (qP), and electron transport ratio (ETR) were obtained under LM2. The data showed that the application of R7:G0:B3 light mode with a shorter photoperiod than 14/10 h (light/dark), regardless of the light intensity used, resulted in a significant increase in growth as well as higher photosynthetic capacity of rocket plants. Since, a clear correlation between the studied traits under the applied light modes was not found, more features should be studied in future experiments.

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“…Light intensity (Qin et al, 2008;Fu et al, 2017;Nguyen et al, 2019;Yan et al, 2019), colors ratio (Whitelam and Halliday, 2007;Kalmatskaya et al, 2019), and photoperiod (Kang et al, 2013;Yan et al, 2019) all have a significant impact on the morphological and physiological characteristics. To find the best combination of light mode(s) for strawberry plant performance, the effects of these three variables on morphological, physiological, and biochemical aspects as well as plant photosynthetic efficiency were examined.…”

Section: Discussionmentioning

confidence: 99%

Enhancement of photosynthesis efficiency and yield of strawberry (Fragaria ananassa Duch.) plants via LED systems

et al. 2022

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Due to advances in the industrial development of light-emitting diodes (LEDs), much research has been conducted in recent years to get a better understanding of how plants respond to these light sources. This study investigated the effects of different LED-based light regimes on strawberry plant development and performance. The photosynthetic pigment content, biochemical constituents, and growth characteristics of strawberry plants were investigated using a combination of different light intensities (150, 200, and 250 μmol m−2 s−1), qualities (red, green, and blue LEDs), and photoperiods (14/10 h, 16/8 h, and 12/12 h light/dark cycles) compared to the same treatment with white fluorescent light. Plant height, root length, shoot fresh and dry weight, chlorophyll a, total chlorophyll/carotenoid content, and most plant yield parameters were highest when illuminated with LM7 [intensity (250 μmol m−2 s−1) + quality (70% red/30% blue LED light combination) + photoperiod (16/8 h light/dark cycles)]. The best results for the effective quantum yield of PSII photochemistry Y(II), photochemical quenching coefficient (qP), and electron transport ratio (ETR) were obtained with LM8 illumination [intensity (250 μmol m−2 s−1) + quality (50% red/20% green/30% blue LED light combination) + photoperiod (12 h/12 h light/dark cycles)]. We conclude that strawberry plants require prolonged and high light intensities with a high red-light component for maximum performance and biomass production.

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Induction of chlorophyll fluorescence in Tradescantia leaves acclimated to growth light of different intensities

Cited by 4 publications

References 13 publications

Photosynthetic apparatus performance of tomato seedlings grown under various combinations of LED illumination

Photosynthetic apparatus performance of tomato seedlings grown under various combinations of LED illumination

Photosynthetic performance of rocket (Eruca sativa. Mill.) grown under different regimes of light intensity, quality, and photoperiod

Enhancement of photosynthesis efficiency and yield of strawberry (Fragaria ananassa Duch.) plants via LED systems

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