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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