Elevated temperature stimulates light-induced processes that contribute to protecting photosystem II against oxidative stress

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F15%3A00456341" target="_blank" >RIV/67179843:_____/15:00456341 - isvavai.cz</a>
Alternative codes found
RIV/61988987:17310/15:A1601EIK
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Elevated temperature stimulates light-induced processes that contribute to protecting photosystem II against oxidative stress
Original language description
We focused on elucidating the impact of elevated temperature on rapid induction of zeaxanthin (Z)- dependent photoprotection in two different plant species. The dynamics of violaxanthin (V) de-epoxidation under different illumination regimes was studied together with chlorophyll a fluorescence transients in Picea abies seedlings and Arabidopsis thaliana leaves pre-acclimated to temperatures ranging from 20 to 40°C. Whereas for spruce seedlings the rapid phase of V de-epoxidation (induced by either 10 s illumination or 10 light pulses 1 s in duration at 1 min intervals) was gradually stimulated upon increasing temperatures, for A. thaliana leaves considerable acceleration of V de-epoxidation occurred only at 40°C. Moreover, only for spruce seedlings was a considerable amount of Z accumulated after 10 1 s illumination. Elevated temperatures stimulated rapid formation of Z-dependent non-radiative dissipation of excitation energy within photosystem II (NRD) induced by 1 s light pulses only for spruce seedlings. The possible role of a specific fatty acid composition in spruce thylakoid membrane lipids in facilitated V de-epoxidation and NRD induction at elevated temperatures is discussed.
Czech name
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Czech description
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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

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Global Change: A Complex Challenge : Conference Proceedings
ISBN
978-80-87902-10-3
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
138-141
Publisher name
Global Change Research Centre, The Czech Academy of Sciences, v. v. i.
Place of publication
Brno
Event location
Brno
Event date
Mar 23, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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