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Long-term exposure to enhanced ultraviolet-B radiation in the sub-arctic does not cause oxidative stress in Vaccinium myrtillus

Taulavuori, E; Backman, M; Taulavuori, K; Gwynn-Jones, D; Johanson, U; Laine, K; Callaghan, T; Sonesson, Mats LU and Björn, Lars Olof LU (1998) In New Phytologist 140(4). p.691-697
Abstract
The aim of this work was to assess whether or not oxidative stress had developed in a dwarf shrub bilberry (Vaccinium myrtillus L.) under long-term exposure to enhanced levels of ultraviolet-B (u.v.-B) radiation. The bilberry plants were exposed to increased u.v.-B representing a 15 stratospheric ozone depletion for seven full growing seasons (19911997) at Abisko, Swedish Lapland (68N). The oxidative stress was assessed on leaves and stems by analysing ascorbate and glutathione concentrations, and activities of the closely related enzymes ascorbate peroxidase (EC 1.11.1.11) and glutathione reductase (EC 1.6.4.2). The affects of autumnal leaf senescence and stem cold hardening on these variables were also considered. The results showed that... (More)
The aim of this work was to assess whether or not oxidative stress had developed in a dwarf shrub bilberry (Vaccinium myrtillus L.) under long-term exposure to enhanced levels of ultraviolet-B (u.v.-B) radiation. The bilberry plants were exposed to increased u.v.-B representing a 15 stratospheric ozone depletion for seven full growing seasons (19911997) at Abisko, Swedish Lapland (68N). The oxidative stress was assessed on leaves and stems by analysing ascorbate and glutathione concentrations, and activities of the closely related enzymes ascorbate peroxidase (EC 1.11.1.11) and glutathione reductase (EC 1.6.4.2). The affects of autumnal leaf senescence and stem cold hardening on these variables were also considered. The results showed that the treatment caused scarcely any response in the studied variables, indicating that u.v.-B flux representing a 15 ozone depletion under clear sky conditions is not sufficient to cause oxidative stress in the bilberry. It is suggested that no strain was evoked since adaptation was possible under such u.v.-B increases. The studied variables did, however, respond significantly to leaf senescence and especially to stem cold hardening. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
New Phytologist
volume
140
issue
4
pages
691 - 697
publisher
Wiley-Blackwell
external identifiers
  • wos:000078340500008
  • scopus:0032437766
ISSN
1469-8137
DOI
10.1046/j.1469-8137.1998.00302.x
language
English
LU publication?
yes
id
cba1a956-648e-4b56-b1a0-95efd0d0387c (old id 131590)
date added to LUP
2007-07-02 14:29:59
date last changed
2017-01-01 05:12:52
@article{cba1a956-648e-4b56-b1a0-95efd0d0387c,
  abstract     = {The aim of this work was to assess whether or not oxidative stress had developed in a dwarf shrub bilberry (Vaccinium myrtillus L.) under long-term exposure to enhanced levels of ultraviolet-B (u.v.-B) radiation. The bilberry plants were exposed to increased u.v.-B representing a 15 stratospheric ozone depletion for seven full growing seasons (19911997) at Abisko, Swedish Lapland (68N). The oxidative stress was assessed on leaves and stems by analysing ascorbate and glutathione concentrations, and activities of the closely related enzymes ascorbate peroxidase (EC 1.11.1.11) and glutathione reductase (EC 1.6.4.2). The affects of autumnal leaf senescence and stem cold hardening on these variables were also considered. The results showed that the treatment caused scarcely any response in the studied variables, indicating that u.v.-B flux representing a 15 ozone depletion under clear sky conditions is not sufficient to cause oxidative stress in the bilberry. It is suggested that no strain was evoked since adaptation was possible under such u.v.-B increases. The studied variables did, however, respond significantly to leaf senescence and especially to stem cold hardening.},
  author       = {Taulavuori, E and Backman, M and Taulavuori, K and Gwynn-Jones, D and Johanson, U and Laine, K and Callaghan, T and Sonesson, Mats and Björn, Lars Olof},
  issn         = {1469-8137},
  language     = {eng},
  number       = {4},
  pages        = {691--697},
  publisher    = {Wiley-Blackwell},
  series       = {New Phytologist},
  title        = {Long-term exposure to enhanced ultraviolet-B radiation in the sub-arctic does not cause oxidative stress in Vaccinium myrtillus},
  url          = {http://dx.doi.org/10.1046/j.1469-8137.1998.00302.x},
  volume       = {140},
  year         = {1998},
}