Abstract
Pulmonaria officinalis is an understorey spring geophyte, which starts its vegetative period before full foliation of the tree storey. During its early growth phase it is exposed to full solar radiation, therefore the enhanced UV-B radiation could present a threat to this species. An outdoor experiment in which potted plants were exposed to below ambient, ambient, and above ambient (corresponding to 17% ozone reduction) UV-B radiation, was conducted in order to evaluate the radiation effects. The amount of photosynthetic pigments and photochemical efficiency of PSII were not affected, but the amount of UV-B absorbing compounds was lower in plants grown under reduced UV-B. This change was measurable after only fourteen days in reproductive shoots, while in the vegetative shoots, it was not detectable until after three months. The leaves of P. officinalis are variegated and the light green spots became less transparent to PAR under enhanced UV-B. The results reveal that under simulated 17% ozone depletion the harmful effects of UV-B on the measured parameters were negligible.
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References
Björn, L. O. & Murphy, T. M. 1985. Computer calculation of solar ultraviolet radiation at ground level. Physiol. Veg. 23: 555–561.
Björn, L. O. & Teramura, A. H. 1993. Simulation of daylight Ultraviolet radiation and effects of ozone depletion. Pp. 41–71. In: Young, A. R. (ed.), Environmental UV Photobiology. Plenum Press, New York.
Caldwell, M. M. 1968. Solar ultraviolet radiation as an ecological factor for alpine plants. Ecol.l Monogr. 38: 243–268.
Caldwell, M. M. & Flint S. D. 1994. Stratospheric ozone reduction, solar UV-B radiation and terrestrial ecosystems. Climatic Change 28: 375–394.
Day, T. A., Vogelmann, T. C. & Delucia, E. H. 1992. Are some plant life forms more effective than others in screening out ultra violet -B radiation? Oecologia 92: 513–519.
Day, T. A., Howells, B. W. & Ruhland, C. T. 1996. Changes in growth and pigment concentrations with leaf age in pea under modulated UV-B radiation field treatments. Plant Cell Environ. 19: 101–108.
Gehrke, C., Johanson, U., Gwynn-Jones, D., Björn, L. O., Callaghan, T. V. & Lee, J. A. 1996. Single and interactive effectsof enhanced ultraviolet-B radiation and increased atmospheric CO2 on terrestrial and subarctic ecosystems. Ecol. Bull. 45: 192–203.
Greenberg B. M., Wilson M. I., Gerhardt K. E. & Wilson K. E. 1996. Morphological and physiological respoonse of Brassica napus to ultraviolet-B radiation: Photomodification of Ribulose1,5-biphosphate carboxylase/oxydase and potential acclimation processess. J. Plant Physiol. 148: 78–86.
Jeffery, S. W. & Humphrey, G. F. 1975. New spectrophotometrie equations for determining chlorophylls a, b, cl and c2 in higher plants, algae and natural phytoplankton. Biochem. Physiol. Pflanzen 167: 191–194.
Masarovicova, E. & Elia, P. 1980. Chlorophyll content in leaves of plants in a Oak-Hornbeam Forest. Photosynthetica 14: 580–588.
Ogren, E. & Oquist G. 1985. Effects of drought on photosynthesis, chlorophyll fluorescence and photoinhihition susceptibility in intact willow leaves. Planta 166: 380–388.
Rau, W. & Schrott, E. L. 1987. Blue light control of pigment biosynthesis. Pp. 43–64. In: Senger, H. (ed.), Blue Light Responses: Phenomena and Occurrence in Plants and Microorganisms I. CRC Press, Boca Raton, FL.
Tevini, M. & Teramura. A. H. 1989. UV-B effects on terrestrial plants. Photochem. Photobiol. 50: 479–487.
Veit, M., Bilger, W., Mühlhauer, T., Brummet, W. & Wlinter, K. 1996. Diurnal changes in flavonoids. J. Plant Physiol. 148: 478–482.
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© 2001 Springer Science+Business Media Dordrecht
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Gaberščik, A., Novak, M., Trošt, T., Mazej, Z., Germ, M., Björn, LO. (2001). The influence of enhanced UV-B radiation on the spring geophyte Pulmonaria officinalis . In: Rozema, J., Manetas, Y., Björn, LO. (eds) Responses of Plants to UV-B Radiation. Advances in Vegetation Science, vol 18. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2892-8_5
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DOI: https://doi.org/10.1007/978-94-017-2892-8_5
Publisher Name: Springer, Dordrecht
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