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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2015.07.017
|2 doi
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|a pubmed24n0838.xml
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|a (DE-627)NLM251449912
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|a (NLM)26233710
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|a (PII)S0981-9428(15)30063-2
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Štroch, Michal
|e verfasserin
|4 aut
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|a Protective effect of UV-A radiation during acclimation of the photosynthetic apparatus to UV-B treatment
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 02.09.2016
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2015 Elsevier Masson SAS. All rights reserved.
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|a We examined the acclimation response of the photosynthetic apparatus of barley (Hordeum vulgare L.) to a combination of UV-A and UV-B radiation (UVAB) and to UV-B radiation alone. Our aim was to evaluate whether UV-A radiation prevents UV-B-induced damage to the photosynthetic apparatus and whether UV-A pre-acclimation is required to mitigate the negative influence of UV-B radiation. Barley plants were grown from seeds under low photosynthetically active radiation (50 μmol m(-2) s(-1)) either in the absence or presence of UV-A radiation (UVA- and UVA+ plants, respectively). After 8 days of development, plants were exposed simultaneously to UV-A and UV-B radiation for the next 6 days. Additionally, UVA- plants were exposed to UV-B radiation alone. The UVA+ plants had a higher CO2 assimilation rate near the light-saturation region (A(N)) and a higher content of both total chlorophylls (Chls) and total carotenoids than the UVA- plants. Chls content, A(N), the potential quantum yield of photosystem II (PSII) photochemistry (F(V)/F(M)), the capacity of light-induced thermal energy dissipation and the efficiency of excitation energy transfer within PSII remained the same or even increased in both UVA+ and UVA- plants after UVAB treatment. On the contrary, exposure of UVA- plants to UV-B radiation itself led to a reduction in all these characteristics. We revealed that the presence of UV-A radiation during UVAB treatment not only mitigated but completely eliminated the negative effect of UV-B radiation on the functioning of the photosynthetic apparatus and that UV-A pre-acclimation was not crucial for development of this UV-A-induced resistance against UV-B irradiation
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Barley (Hordeum vulgare L.)
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|a Chlorophyll fluorescence
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4 |
|a Photosynthesis
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|a Photosynthetic pigments
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|a UV-A radiation
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| 650 |
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4 |
|a UV-B radiation
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|a Materová, Zuzana
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Vrábl, Daniel
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Karlický, Václav
|e verfasserin
|4 aut
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| 700 |
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|a Šigut, Ladislav
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Nezval, Jakub
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Špunda, Vladimír
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 96(2015) vom: 01. Nov., Seite 90-6
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:96
|g year:2015
|g day:01
|g month:11
|g pages:90-6
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|u http://dx.doi.org/10.1016/j.plaphy.2015.07.017
|3 Volltext
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