Ultraviolet action spectra for the induction and inhibition of anthocyanin synthesis in broom sorghum seedlings

Hashimoto, Tohru; Shichijo, Chizuko; Yatsuhashi, Hiroko

doi:10.1016/1011-1344(91)80040-o

Cited by 35 publications

(21 citation statements)

References 20 publications

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“…Furthermore, this effect can be photoreactivated, also indicating a CPD-mediated process. A similar UV-B effect on anthocyanin formation in broom Sorgkum seedlings was discovered by Hashimoto et al (1991). These results indicate that CPDs mediate the effect.…”

supporting

confidence: 67%

“…Induction of flavonoid biosynthesis by UV-B itself ( A, , , = 290-300 nm) is a common phenomenon in both etiolated and lightgrown plants (Beggs and Wellmann, 1994 Vol. 108, 1995 to longer wavelengths as compared to the action spectrum for its inhibition (A, , , < 280 nm) (Wellmann et al, 1984;Hashimoto et al, 1991). Both action spectra are overlapping in the long-wavelength UV-B range and, therefore, a loss of synthesis of UV-B protective pigments might be expected if PRE activity is limiting.…”

mentioning

confidence: 99%

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Ultraviolet Light Inhibition of Phytochrome-Induced Flavonoid Biosynthesis and DNA Photolyase Formation in Mustard Cotyledons (Sinapis alba L.)

1995

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I n cotyledons of etiolated mustard (Sinapis a b a L.) seedlings, phytochrome-far-red-absorbing forminduced flavonoid biosynthesis was found to be inhibited by short-term ultraviolet .(UV) irradiations. UV inhibition was shown for the synthesis of quercetin, anthocyanin, and also for the accumulation of the mRNA for chalcone synthase, the key enzyme of this pathway. The UV effect was more pronounced on flavonoid biosynthesis, a process that selectively occurs i n the epidermal layers, than on the synthesis of mRNA for chlorophyll a/b-binding protein localized in the mesophyll tissue. These UV inhibitory effects were accompanied by cyclobutane pyrimidine dimer (CPD) formation showing a linear fluence-response relationship. CPD formation and UV inhibition of flavonoid biosynthesis was found to be partially reversible by blue/UV-A light via DNA photolyase (PRE), allowing photoreactivation of the DNA by splitting of CPDs, which are the cause of the UV effect. Like flavonoid formation PRE was also induced by the far-red-absorbing form of phytochrome and induction was inhibited by UV. A potentia1 risk of inhibition, in response to solar UV-B irradiation, was shown for anthocyanin formation. This inhibition, however, occurred only if photoreactivation was experimentally reduced. The PRE activity present in the etiolated seedlings (further increasing about 5-fold during light acclimatization) appears to be sufficient to prevent the persistence of CPDs even under conditions of high solar irradiation.

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confidence: 67%

mentioning

confidence: 99%

Ultraviolet Light Inhibition of Phytochrome-Induced Flavonoid Biosynthesis and DNA Photolyase Formation in Mustard Cotyledons (Sinapis alba L.)

1995

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“…Finally, action spectra are necessary for the assessment of the attenuation of biologically effective UVR in water, since the underwater UV spectrum is strongly influenced by physio-chemical factors. Some action spectra determined for plants have been constructed using monochromatic light (Halldal 1964, Jones & Kok 1966, Hashimoto et al 1991, Quaite et al 1992. The most common action spectra used to assess biological effects in relation to ozone trends are the plant action spectrum of Caldwell (1971), derived from general damage to terrestrial plants, and the DNA action spectrum of Setlow (1974), derived from the occurrence of photoproducts in DNA and phages.…”

Section: Introductionmentioning

confidence: 99%

Wavelength-dependent induction of thymine dimers and growth rate reduction in the marine diatom Cyclotella sp. exposed to ultraviolet radiation

Buma¹,

Engelen²,

Gieskes³

1997

Mar. Ecol. Prog. Ser.

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ABSTRACT-Cultures of thc marine diatom C}~clotella sp. were subjected to vanous polychromatic exposures of UVB radiation (280-320 nm), UVA radiation (320-400 nm) and photosynthetically active radiation, PAR (400-700 nm). Changes in growth rate and residual thymine dlmer content (a measure for DNA damage) were measured during prolonged exposure (6 to 7 d) to these conditions. Also, changes in medn cell size were studled as an Indication of UV radiation induced cell cycle arrest in Cyclotella sp. Growth rate reduction was strongly relrlted with residual thymine dimer content in treatments including wavelengths below 302 nm. Additionally, slgniflcant i n c r~a s e s in mean cell size w r r e found In these cultures. This suggests that UVB-induced residual DNA damage IS followed by ccll cycle arrest and growth rate reduction in Cyclotella sp. We discuss how these results can be interpreted in relation to changes In the solar spectrum as a result of stratospheric ozone reduction.

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“…Polyamines and waxes also contribute to the development of UV tolerance (Kramer et al, 1992). The accumulation of anthocyanin in response to increased UV-B radiation was reported by Hashimoto et al (1991), Singh et al (1999) and other authors. In higher plants specific photoreceptors (e.g.…”

Section: Effect Of Increased Uv-b Radiation On Maizementioning

confidence: 88%

Effect of increased UV-B radiation on the anthocyanin content of maize ( Zea mays L.) leaves

Pintér

Kósa

Hadi

et al. 2007

Acta Agronomica Hungarica

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The level of UV-B radiation reaching the surface of the earth is increasing due to the thinning of the ozone layer in the stratosphere over recent decades. This has numerous negative effects on living organisms.Some of the Hungarian inbred maize lines examined under the climatic conditions in Chile exhibited an unusually high proportion of pollen mortality, flowering asynchrony and barrenness. The evidence suggests that this can be attributed to the approx. 30% greater UV-B radiation in Chile.The investigation of this problem within the framework of abiotic stress breeding programmes is extremely important in the light of the global rise in UV-B radiation, which may make it necessary to elaborate a selection programme to develop inbred lines with better tolerance of this type of radiation.In the course of the experiment the same ten inbred lines, having different maturity dates and genetic backgrounds, were tested for five years in Chile and Hungary. The tests focussed on anthocyanin, a flavonoid derivative involved in the absorption of damaging UV-B radiation.Averaged over years and varieties, the total anthocyanin content in the leaf samples was significantly higher in Chile than in Hungary. This was presumably a response at the metabolic level to the negative stress represented by higher UV-B radiation.In the five early-maturing flint lines the anthocyanin contents were more than 45% greater than those recorded in Hungary. This suggests that these genotypes, originating from northern regions, were not sufficiently adapted to the higher radiation level. In these samples higher UV-B caused a sharp rise in the quantity of anthocyanin, which absorbs the dangerous radiation. In late-maturing genotypes the initial content of the protective compound anthocyanin was higher at both locations, so in these types the high radiation level was not a problem and did not cause any substantial change.Similar conclusions were drawn from the results of fluorescence imaging. The F440/F690 ratio indicative of the stress level was higher in late lines with a high anthocyanin content, good tolerance and good adaptability.Key words: Zea mays L., inbred line, ultraviolet-B radiation, flavone, anthocyanin, stress acclimation, fluorescence imaging J. PINTÉR et al. Hungarica, 55, 2007 8 Acta Agronomica IntroductionOne negative consequence of global climate change is the thinning of the ozone layer in the stratosphere, which functions as a shield against dangerous radiation. This has been caused in part by human activities, especially by the ozone-antagonistic gases emitted by heavy industry (Anderson et al., 1991;McFarland and Kaye, 1992;McKenzie et al., 1999;Reddy and Hodges, 2000).A decrease of 1% in the ozone level may result in a 1.3-1.8% rise in the UV-B radiation (280-320 nm), the most biologically active form of ultraviolet radiation, with the most damaging effect on living organisms (Madronich, 1993). Naturally, the level of dangerous radiation depends on many factors, such as the latitude and altitude of the given location, ...

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Ultraviolet action spectra for the induction and inhibition of anthocyanin synthesis in broom sorghum seedlings

Cited by 35 publications

References 20 publications

Ultraviolet Light Inhibition of Phytochrome-Induced Flavonoid Biosynthesis and DNA Photolyase Formation in Mustard Cotyledons (Sinapis alba L.)

Ultraviolet Light Inhibition of Phytochrome-Induced Flavonoid Biosynthesis and DNA Photolyase Formation in Mustard Cotyledons (Sinapis alba L.)

Wavelength-dependent induction of thymine dimers and growth rate reduction in the marine diatom Cyclotella sp. exposed to ultraviolet radiation

Effect of increased UV-B radiation on the anthocyanin content of maize ( Zea mays L.) leaves

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