Blue, red and blue plus red light control of chlorophyll content and CO<sub>2</sub> gas exchange in barley leaves: Quantitative description of the effects of light quality and fluence rate

Bukhov, N. G.; Drozdova, I. S.; Bondar, V. V.; Mokronosov, A. T.

doi:10.1111/j.1399-3054.1992.tb04765.x

Cited by 33 publications

(21 citation statements)

References 18 publications

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“…An increase in the fluence rate of BL or RL markedly stimulated this effect. This response was qualitatively similar to that reported previously for the rate of COz fixation under saturated light (Bukhov et al 1992). It was of interest, therefore, to establish whether there is a quantitative relationship between the content of adenylates in a leaf and the maximum photosynthetic capacity.…”

Section: Materials and Methods Resultssupporting

confidence: 55%

“…Calculated values of linear regression coefficients show that the slope of the straight line was about twofold higher for RL-grown leaves than for those grown in BL. This result indicates, therefore, that light acts on both the maximum rate of CO 2 fixation (Bukhov et al 1992) and the adenylate content in mature barley leaves in a quantitative, not qualitative, manner. It should be noted that a similar relationship was obtained for ADP content (data not shown).…”

Section: Materials and Methods Resultsmentioning

confidence: 91%

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Long-term effects of blue or red light on ATP and ADP contents in primary barley leaves

Bukhov

Bondar

Drozdova

1995

Planta

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Abstract. Levels of ATP and ADP were studied in primary leaves of barley (Hordeum vulgare L. cv. Viner) seedlings grown under blue (BL) or red light (RL) of various irradiances. In mature leaf segments, BL stimulated a greater accumulation of adenylates than RL. Transfer of barley seedlings from RL to BL for 48 h caused about a twofold increase in the content of adenylates, probably due to de-novo synthesis of adenine nucleotides. Weak BL was found to stimulate an increase in the adenylate content and a higher irradiance enhanced the stimulatory effect. The adenylate content increased markedly from the base towards the tip of barley leaves grown under BL but not in those grown under RL. However, the adenylate content was higher in the basalmost segment of barley leaves grown under RL, indicating that the action of RL on adenylate content proceeded more rapidly than that of BL. The same conclusion could be drawn from the results of experiments with de-etiolated leaves. A linear relationship was established between the maximum rate of CO 2 fixation and the ATP or ADP content in mature segments of primary barley leaves. The possible involvement of two photoreceptors, phytochrome and cryptochrome, in the long-term light regulation of the total content of adenylates in primary barley leaves is discussed.

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Section: Materials and Methods Resultssupporting

confidence: 55%

Section: Materials and Methods Resultsmentioning

confidence: 91%

Long-term effects of blue or red light on ATP and ADP contents in primary barley leaves

Bukhov

Bondar

Drozdova

1995

Planta

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“…Apart from excitation of specific photoreceptor, blue light is absorbed by chlorophyll molecules and drives photosynthesis. In order to separate the substrate and regulatory functions of blue light, it is necessary to investigate the action of blue light in a wide range of intensities [23]. Unlike blue light, UV radiation is photosynthetically inactive and can be safely applied to induce photoregulatory responses.…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet Rays Promote Development of Photosystem II Photochemical Activity and Accumulation of Phenolic Compounds in the Tea Callus Culture (Camellia sinensis)

Загоскина

Alyavina

Gladyshko

et al. 2005

Russ J Plant Physiol

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Effect of UV-B rays (280-320 nm) on photosynthetic electron transport and production of phenolic compounds in tea ( Camellia sinensis L.) callus culture grown in white light was investigated. When white light was supplemented with UV radiation, the culture growth was retarded and morphological characteristics were modified. These conditions promoted the formation of chlorophyll-bearing cells and altered the ability of cultured cells to accumulate phenolic compounds, including flavans specific to Camellia sinensis . By the end of the culturing cycle (on the 45th day), the total content of phenolic compounds in the culture grown under supplementary UV irradiation was almost 1.5 times higher than in the control culture. The UV rays greatly stimulated photosystem II (PSII) activity in phototrophic cells of the callus culture, which was indicated by a large increase in the ratio of variable chlorophyll fluorescence to maximal fluorescence. This ratio was as low as 0.19 in cells cultured in white light and increased to 0.53 in the cell culture grown under white and UV light. The kinetics of dark relaxation of chlorophyll variable fluorescence, related to reoxidation of PSII primary acceptor, contained either two or three components, depending on the absence or presence of UV radiation, respectively. An artificial electron acceptor of PSI, methyl viologen modified the kinetics of dark decay of chlorophyll variable fluorescence in a characteristic manner, implying that photosynthetic electron transport was mediated by PSI and PSII in both treatments (culturing in white light with and without UV-B). It is concluded that stimulatory effect of UV rays on the parameters examined in phototrophic regions of Camellia tissue culture is determined by photoexcitation of a regulatory pigment that absorbs quanta in blue and long-wave UV spectral regions.

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“…Great efforts have been made to investigate the dependence of photosynthetic activity on light quality and intensity, using with various artificial light sources such as incandescent, fluorescent, and halogen lamps [6][7][8], lamps combined with optical filters [9][10][11], and more recently light emitting diodes (LEDs) [12][13][14]. For about a decade, alongside the rapid development of solid state lighting (SSL) for general illumination applications, increasing attention has been paid to the use of luminescent phosphors as a new solution for artificial plant cultivation light, owing to the broad spectral versatility which can be provided in this way [15,16].…”

Section: Introductionmentioning

confidence: 99%

Enhanced photosynthetic activity in Spinacia oleracea by spectral modification with a photoluminescent light converting material

Xia¹,

Batentschuk²,

Osvet³

et al. 2013

Opt. Express

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Abstract:The spectral conversion of incident sunlight by appropriate photoluminescent materials has been a widely studied issue for improving the efficiency of photovoltaic solar energy harvesting. By using phosphors with suitable excitation/emission properties, also the light conditions for plants can be adjusted to match the absorption spectra of chlorophyll dyes, in this way increasing the photosynthetic activity of the plant. Here, we report on the application of this principle to a high plant, Spinacia oleracea. We employ a calcium strontium sulfide phosphor doped with divalent europium (Ca 0.4 Sr 0.6 S:Eu 2+ , CSSE) on a backlight conversion foil in photosynthesis experiments. We show that this phosphor can be used to effectively convert green to red light, centering at a wavelength of ~650 nm which overlaps the absorption peaks of chlorophyll a/b pigments. A measurement system was developed to monitor the photosynthetic activity, expressed as the CO 2 assimilation rate of spinach leaves under various controlled light conditions. Results show that under identical external light supply which is rich in green photons, the CO 2 assimilation rate can be enhanced by more than 25% when the actinic light is modified by the CSSE conversion foil as compared to a purely reflecting reference foil. These results show that the phosphor could be potentially applied to modify the solar spectrum by converting the green photons into photosynthetically active red photons for improved photosynthetic activity.

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Blue, red and blue plus red light control of chlorophyll content and CO₂ gas exchange in barley leaves: Quantitative description of the effects of light quality and fluence rate

Cited by 33 publications

References 18 publications

Long-term effects of blue or red light on ATP and ADP contents in primary barley leaves

Long-term effects of blue or red light on ATP and ADP contents in primary barley leaves

Ultraviolet Rays Promote Development of Photosystem II Photochemical Activity and Accumulation of Phenolic Compounds in the Tea Callus Culture (Camellia sinensis)

Enhanced photosynthetic activity in Spinacia oleracea by spectral modification with a photoluminescent light converting material

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Blue, red and blue plus red light control of chlorophyll content and CO2 gas exchange in barley leaves: Quantitative description of the effects of light quality and fluence rate

Cited by 33 publications

References 18 publications

Long-term effects of blue or red light on ATP and ADP contents in primary barley leaves

Long-term effects of blue or red light on ATP and ADP contents in primary barley leaves

Ultraviolet Rays Promote Development of Photosystem II Photochemical Activity and Accumulation of Phenolic Compounds in the Tea Callus Culture (Camellia sinensis)

Enhanced photosynthetic activity in Spinacia oleracea by spectral modification with a photoluminescent light converting material

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Blue, red and blue plus red light control of chlorophyll content and CO₂ gas exchange in barley leaves: Quantitative description of the effects of light quality and fluence rate