An endogenous rhythm in the rate of carbon dioxide output of Bryophyllum. IV. Effect of intensity of illumination on entrainment of the rhythm by cycles of light &amp; darkness

Wilkins, Malcolm B.

doi:10.1104/pp.37.6.735

Cited by 23 publications

(3 citation statements)

References 15 publications

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“…Circadian components in important processes as flowering and other day length‐dependent physiological phenomena were early recognized 208. Circadian rhythms in CO 2 exchange,209, 210 enzyme activities, and transcript levels were since reported 10, 211, 212. Recently, circadian rhythms in chromatin structure were observed in plants 213…”

Section: The Plant Circadian Clockmentioning

confidence: 99%

Circadian oscillators in eukaryotes

Jolma

Lærum

Lillo

et al. 2010

WIREs Mechanisms of Disease

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The biological clock, present in nearly all eukaryotes, has evolved such that organisms can adapt to our planet's rotation in order to anticipate the coming day or night as well as to anticipate unfavorable seasons. As all modern high-precision chronometers, the biological clock uses oscillation as a timekeeping element. In this review we describe briefly the discovery, historical development, and general properties of circadian oscillators. The issue of temperature compensation is discussed and our present understanding of the underlying genetic and biochemical mechanisms in circadian oscillators are described with special emphasis on Neurospora crassa, mammals and plants.

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Section: The Plant Circadian Clockmentioning

confidence: 99%

Circadian oscillators in eukaryotes

Jolma

Lærum

Lillo

et al. 2010

WIREs Mechanisms of Disease

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“…Photosynthetic pathways of many facultative CAM species are influenced by several environmental factors such as soil water content and light intensity, as well as photoperiod (Brulfert et al., 1996; Mattos and Lüttge, 2001; Brilhaus et al., 2016;). CAM and C3-like pathway of Kalanchoe blossfeldiana can be induced by short light period and short light period with interruption of long dark period respectively, and phytochrome is involved in these processes (Schmitz, 1951; Gregory and Thimann, 1954; Wilkins, 1962; Queiroz and Morel, 1974). Studies on the effects of D. ekapol showed that short light period increased the net CO 2 absorption of phase I (dark period), while long light period increased the net CO 2 absorption of phase II (early stage of light period) and phase IV (at the end of light period) (Sekizuka et al., 1995).…”

Section: Introductionmentioning

confidence: 99%

Effect of Light/Dark Cycle on Photosynthetic Pathway Switching and CO2 Absorption in Two Dendrobium Species

Cheng

et al. 2019

Front. Plant Sci.

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Many Dendrobium species are both ornamental and medicinal plants in China. Several wild species have been exploited to near extinction, and facility cultivation has become an important way to meet the great market demand. Most Dendrobium species have evolved into crassulacean acid metabolism (CAM) pathways in adapting to harsh epiphytic environment, leading to low daily net CO 2 absorption. Photosynthetic pathways of many facultative CAM plants are regulated by various environmental factors. Light/dark cycle plays an important role in regulating the photosynthetic pathway of several CAM species. The aims of this study were to investigate whether the photosynthetic pathway of Dendrobium species could be regulated between C3 and CAM by changing light/dark cycles and the daily net CO 2 absorption could be enhanced by shortening light/dark cycle. In this study, net CO 2 exchange rates of D. officinale and D. primulinum were monitored continuously during two different light/dark cycles conversion compared to Kalanchoe daigremontiana as an obligate CAM plant. The net CO 2 exchange pattern and stomatal behavior of D. officinale and D. primulinum were switched from CAM to C3-like by changing the light/dark cycle from 12/12 h to 4/4 h. However, this switching was not completely reversible. Compared to the original 12/12 h light/dark cycle, the dark, light, and daily net CO 2 exchange amount of D. officinale were significantly increased after the light/dark cycle was changed from 4/4 h to 12/12 h, but those in D. primulinum was opposite and those in K. daigremontiana was not affected. Daily net CO 2 exchange amount of D. officinale increased by 47% after the light/dark cycle was changed from 12/12 h to 4/4 h, due to the sharp increase of light net CO 2 exchange amount. However, the large decrease of dark net CO 2 exchange amount could not be offset by increased light net CO 2 exchange amount, leading to reduced daily net CO 2 exchange amount of D. primulinum . In conclusion, the 4/4 h light/dark cycle can induce the photosynthetic pathway of D. officinale and D. primulinum to C3-like, and improve the daily CO 2 absorption of D. officinale .

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“…CAM and C3 pathways of CAM plant Kalanchoe blossfeldiana can be induced by short light period and long dark period, and plant pigments are involved in these processes [6][7][8] . Studies on D. ekapol showed that short light period increases net CO 2 absorption in dark period, while long light period increases net CO 2 absorption at early and end of light period [9] .…”

Section: Introductionmentioning

confidence: 99%

Effects of short light/dark cycles on photosynthetic pathway switching and growth of medicinal Dendrobium officinale in aeroponic cultivation

Cheng¹,

He²,

He³

et al. 2019

International Journal of Agricultural and Biological Engineering

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Dendrobium officinale has high medicinal value but grows slowly in natural environment due to its special CAM photosynthetic pathway. In this study, D. officinale were grown aeroponically with light/dark cycles of 12 h/12 h, 4 h/4 h, and 2 h/2 h for 150 d. The photosynthetic electron transfer characteristics, photosynthetic CO 2 fixation pathways, and accumulations of biomass and soluble polysaccharides in D. officinale leaves were studied. The results showed that the photosynthetic apparatus states of D. officinale in aeroponic cultivation under short light/dark cycles of 4 h/4 h and 2 h/2 h were better than that under 12 h/12 h. The dark net CO 2 exchange percentages of D. officinale were negative in short light/dark cycles of 4 h/4 h and 2 h/2 h, and the daily net CO 2 exchange amount and dry/fresh weight increases were doubled compared with those in 12 h/12 h light/dark cycle. High soluble polysaccharides content and the soluble polysaccharides yield of D. officinale were obtained in the shorter light/dark cycle of 2 h/2 h. Therefore, the photosynthetic pathway of D. officinale could be switched from CAM to C3 by short light/dark cycles of 4 h/4 h and 2 h/2 h, and its higher biomass accumulation and soluble polysaccharides yield could be obtained by the shorter light/dark cycle of 2 h/2 h in aeroponic cultivation.

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An endogenous rhythm in the rate of carbon dioxide output of Bryophyllum. IV. Effect of intensity of illumination on entrainment of the rhythm by cycles of light & darkness

Cited by 23 publications

References 15 publications

Circadian oscillators in eukaryotes

Circadian oscillators in eukaryotes

Effect of Light/Dark Cycle on Photosynthetic Pathway Switching and CO2 Absorption in Two Dendrobium Species

Effects of short light/dark cycles on photosynthetic pathway switching and growth of medicinal Dendrobium officinale in aeroponic cultivation

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