Protective effect of UV-A radiation during acclimation of the photosynthetic apparatus to UV-B treatment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F15%3A00446355" target="_blank" >RIV/67179843:_____/15:00446355 - isvavai.cz</a>
Alternative codes found
RIV/61988987:17310/15:A1601ERE
Result on the web
<a href="http://dx.doi.org/10.1016/j.plaphy.2015.07.017" target="_blank" >http://dx.doi.org/10.1016/j.plaphy.2015.07.017</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.plaphy.2015.07.017" target="_blank" >10.1016/j.plaphy.2015.07.017</a>
Alternative languages
Result language
angličtina
Original language name
Protective effect of UV-A radiation during acclimation of the photosynthetic apparatus to UV-B treatment
Original language description
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 m2 s1) 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 (AN) and a higher content of both total chlorophylls (Chls) and total carotenoids than the UVA plants. Chls content, AN, the potential quantum yield of photosystem II (PSII) photochemistry (FV/FM), 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.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BO - Biophysics
OECD FORD branch
—
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Plant Physiology and Biochemistry
ISSN
0981-9428
e-ISSN
—
Volume of the periodical
96
Issue of the periodical within the volume
nov
Country of publishing house
FR - FRANCE
Number of pages
7
Pages from-to
90-96
UT code for WoS article
000364880500011
EID of the result in the Scopus database
2-s2.0-84938347594