Ultraviolet-B (280–320 nm) Absorbing Pigments in the Leaves of Silene vulgaris: their Role in UV-B Tolerance

Staaij, J.W.M. van de; Ernst, W. H. O.; Hakvoort, Henk W. J.; Rozema, J.

doi:10.1016/s0176-1617(11)81416-1

Cited by 42 publications

(16 citation statements)

References 38 publications

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“…8). Similar results were obtained with Brassica rapa [16] and Silene vulgaris [26]. Researchers using higher doses to treat sunflower and corn, report an increase in leaf thickness [21].…”

Section: Resultssupporting

confidence: 73%

Growth and production of buckwheat (Fagopyrum esculentum) treated with reduced, ambient, and enhanced UV-B radiation

Gaberščik

Vončina

Trošt

et al. 2002

Journal of Photochemistry and Photobiology B: Biology

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The effect of enhanced UV-B radiation on buckwheat (Fagopyrum esculentum Moench. variety 'Darja'), an important high elevation crop, was studied in order to estimate its vulnerability in changing UV-B environment. Plants were grown in outdoor experiments from July to October under reduced and ambient UV-B levels, and an UV-B level simulating 17% ozone depletion in Ljubljana. During the development the following parameters were monitored: light saturated photosynthetic activity, transpiration, potential and effective photochemical efficiencies of photosystem II, the contents of photosynthetic pigments and methanol soluble UV-B absorbing compounds. At the end of the experiment, growth rate and production of seeds were estimated. In the following growth season the seeds collected from plants exposed to different UV-B treatments were tested for germination capacity. Total UV-B absorbing compounds during plant development were increased by UV-B radiation, photosynthetic pigments (chlorophyll a and b and carotenoids) decreased. Photosynthetic rate was lowered in an early stage of development. UV-B treatment resulted in the increase in the transpiration rate and consequently the decrease in water use efficiency (WUE). The disturbances in water economy and in photosynthesis affected the reproduction potential negatively; the production of seeds in plants cultivated under ambient and enhanced UV-B was 57 and 39% of the production of specimens treated with reduced UV-B, respectively. The germination of seeds collected from treated plants revealed on average about 95% success, independently of the treatment, but the time needed for germination was the shortest for seeds developed under enhanced UV-B level treatment. Enhanced UV-B radiation affected water relations and production of buckwheat, but not the potential of seeds for germination.

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“…8). Similar results were obtained with Brassica rapa [16] and Silene vulgaris [26]. Researchers using higher doses to treat sunflower and corn, report an increase in leaf thickness [21].…”

Section: Resultssupporting

confidence: 73%

Growth and production of buckwheat (Fagopyrum esculentum) treated with reduced, ambient, and enhanced UV-B radiation

Gaberščik

Vončina

Trošt

et al. 2002

Journal of Photochemistry and Photobiology B: Biology

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“…1995; Vandestaaij et al. 1995; Day and Demchik 1996; Sheahan 1996; Bornman et al. 1997; Olsson et al.…”

Section: Model Analysisunclassified

Integration and scaling of UV‐B radiation effects on plants: from DNA to leaf

Suchar

Robberecht

2015

Ecology and Evolution

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A process-based model integrating the effects of UV-B radiation through epidermis, cellular DNA, and its consequences to the leaf expansion was developed from key parameters in the published literature. Enhanced UV-B radiation-induced DNA damage significantly delayed cell division, resulting in significant reductions in leaf growth and development. Ambient UV-B radiation-induced DNA damage significantly reduced the leaf growth of species with high relative epidermal absorbance at longer wavelengths and average/low pyrimidine cyclobutane dimers (CPD) photorepair rates. Leaf expansion was highly dependent on the number of CPD present in the DNA, as a result of UV-B radiation dose, quantitative and qualitative absorptive properties of epidermal pigments, and repair mechanisms. Formation of pyrimidine-pyrimidone (6-4) photoproducts (6-4PP) has no effect on the leaf expansion. Repair mechanisms could not solely prevent the UV-B radiation interference with the cell division. Avoidance or effective shielding by increased or modified qualitative epidermal absorptance was required. Sustained increased UV-B radiation levels are more detrimental than short, high doses of UV-B radiation. The combination of low temperature and increased UV-B radiation was more significant in the level of UV-B radiation-induced damage than UV-B radiation alone. Slow-growing leaves were more affected by increased UV-B radiation than fast-growing leaves.

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“…UVB and UVA receptor molecules are most certainly below the epidermal tissue and epicuticular waxes that strongly absorb in the UV (Gausman et al 1975). The flavonoids that absorb the UVB transmit in the PAR (van de Staaij et al 1995). The flavonoids that absorb the UVB transmit in the PAR (van de Staaij et al 1995).…”

Section: Canopy Irradiance At Receptor Orientationsmentioning

confidence: 99%

Partitioning of biologically active radiation in plant canopies

Grant

1997

Int J Biometeorol

111

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Plant germination, growth, maturation, and productivity are heavily influenced by the quality and quantity of the light in its environment. The light environment has traditionally been quantified in terms of radiant heat energy and available photosynthetic radiation (PAR), but detailed spectral irradiance or photon flux distributions have rarely been studied. This information is needed to translate the research that plant photobiologists and photochemists have been conducting with regard to understanding the light controls on plant physiology in the field environment of plant canopies. More interest has recently been generated as the potential impacts of global climate changes on intensively managed and natural terrestrial ecosystems are identified and evaluated. Linkages between the identified impacts of various wavelengths of light on plant physiology and the light environment of the plant canopy are identified, with detailed discussion concerning the impacts of plant canopy structure on the plant light response.

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Ultraviolet-B (280–320 nm) Absorbing Pigments in the Leaves of Silene vulgaris: their Role in UV-B Tolerance

Cited by 42 publications

References 38 publications

Growth and production of buckwheat (Fagopyrum esculentum) treated with reduced, ambient, and enhanced UV-B radiation

Growth and production of buckwheat (Fagopyrum esculentum) treated with reduced, ambient, and enhanced UV-B radiation

Integration and scaling of UV‐B radiation effects on plants: from DNA to leaf

Partitioning of biologically active radiation in plant canopies

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