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Epidermal UV-screening in vascular plants from Svalbard (Norwegian Arctic)

Nybakken, Line; Bilger, Wolfgang; Johanson, Ulf; Björn, Lars Olof LU ; Zielke, Mathias and Solheim, Bjørn (2004) In Polar Biology 27(7). p.383-390
Abstract
Stratospheric ozone depletion is most pronounced at high latitudes, and the concurring increased UV-B radiation might adversely affect plants from polar areas. However, vascular plants may protect themselves against UV-B radiation by UV-absorbing compounds located in the epidermis. In this 3-year study, epidermal UV-B (lambda(max) 314 nm) and UV-A (lambda(max) 366 nm) screening was assessed using a fluorescence method in 12 vascular species growing in their natural environment at Svalbard. The potential for acclimation to increased radiation was studied with artificially increased UV-B, simulating 11% ozone depletion. Open-top chambers simulated an increase in temperature of 2-3degreesC in addition to the UV-B manipulation. Adaxial... (More)
Stratospheric ozone depletion is most pronounced at high latitudes, and the concurring increased UV-B radiation might adversely affect plants from polar areas. However, vascular plants may protect themselves against UV-B radiation by UV-absorbing compounds located in the epidermis. In this 3-year study, epidermal UV-B (lambda(max) 314 nm) and UV-A (lambda(max) 366 nm) screening was assessed using a fluorescence method in 12 vascular species growing in their natural environment at Svalbard. The potential for acclimation to increased radiation was studied with artificially increased UV-B, simulating 11% ozone depletion. Open-top chambers simulated an increase in temperature of 2-3degreesC in addition to the UV-B manipulation. Adaxial epidermal UV-B transmittance varied between 1.6 and 11.4%. Artificially increased UV-B radiation and temperature did not consistently influence the epidermal UV-B transmittance in any of the measured species, suggesting that they may not have the potential to increase their epidermal screening, or that the screening is already high enough at the applied UV-B level. We propose that environmental factors other than UV-B radiation may influence epidermal UV-B screening. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ozone depletion ultraviolet-B radiation plants epidermis
in
Polar Biology
volume
27
issue
7
pages
383 - 390
publisher
Springer
external identifiers
  • wos:000221446900001
  • scopus:3242680938
ISSN
1432-2056
DOI
10.1007/s00300-004-0602-8
project
Photobiology
language
English
LU publication?
yes
id
c29a6498-6021-4334-9be6-3ab35bbac3d4 (old id 134338)
date added to LUP
2007-07-30 10:14:15
date last changed
2017-07-02 03:31:46
@article{c29a6498-6021-4334-9be6-3ab35bbac3d4,
  abstract     = {Stratospheric ozone depletion is most pronounced at high latitudes, and the concurring increased UV-B radiation might adversely affect plants from polar areas. However, vascular plants may protect themselves against UV-B radiation by UV-absorbing compounds located in the epidermis. In this 3-year study, epidermal UV-B (lambda(max) 314 nm) and UV-A (lambda(max) 366 nm) screening was assessed using a fluorescence method in 12 vascular species growing in their natural environment at Svalbard. The potential for acclimation to increased radiation was studied with artificially increased UV-B, simulating 11% ozone depletion. Open-top chambers simulated an increase in temperature of 2-3degreesC in addition to the UV-B manipulation. Adaxial epidermal UV-B transmittance varied between 1.6 and 11.4%. Artificially increased UV-B radiation and temperature did not consistently influence the epidermal UV-B transmittance in any of the measured species, suggesting that they may not have the potential to increase their epidermal screening, or that the screening is already high enough at the applied UV-B level. We propose that environmental factors other than UV-B radiation may influence epidermal UV-B screening.},
  author       = {Nybakken, Line and Bilger, Wolfgang and Johanson, Ulf and Björn, Lars Olof and Zielke, Mathias and Solheim, Bjørn},
  issn         = {1432-2056},
  keyword      = {ozone depletion ultraviolet-B radiation plants epidermis},
  language     = {eng},
  number       = {7},
  pages        = {383--390},
  publisher    = {Springer},
  series       = {Polar Biology},
  title        = {Epidermal UV-screening in vascular plants from Svalbard (Norwegian Arctic)},
  url          = {http://dx.doi.org/10.1007/s00300-004-0602-8},
  volume       = {27},
  year         = {2004},
}