Irreversible changes in photosynthetic rate induced by heating above 40 °C.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F05%3A00002158" target="_blank" >RIV/61989592:15310/05:00002158 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Irreversible changes in photosynthetic rate induced by heating above 40 °C.
Original language description
We studied heat-induced irreversible decrease in the photosynthetic rate (PR) in 8-day-old barley leaves and its possible connection with the effect of heat stress (HS) on the light photosynthetic reactions (LPR). HS was induced by a plunge of dark-adapted leaves in the water bath (24 - 46 °C) for 5 minutes. Such pretreated leaves were cooled down to room temperature and used for gasometric (detection of changes in dark photosynthetic reactions - DPR) and chl a fluorescence measurements (characterization of changes in LPR). At both methods the same intensity of actinic light was used. HS caused a decline of effective quantum yield of photosystem II (PSII) photochemistry (Phi2) and an increase in non-photochemical quenching of Chl a fluorescence (qN) that could be observed already after preheating to 38 °C, while decrease in PR could be first observed only after preheating to 40 °C. Simultaneously we observed rapid decrease in the carboxylation efficiency of Rubisco (dA/dC) after prehea
Czech name
Nevratné změny v rychlosti fotosyntézy způsobené zahřátím na 40 C.
Czech description
Na listech ječmene jsme studovali změny fotosyntézy způsobené zahřátím listů nad 40 C. Bylo zjištěno, že pokles rychlosti fotosyntézy je způsoben jak snížením aktivity světelných fotosyntetických reakcí, tak i snížením aktivity Calvinova cyklu. Tyto změny byly diskutovány vzhledem ke známým faktům
Classification
Type
D - Article in proceedings
CEP classification
BO - Biophysics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LN00A141" target="_blank" >LN00A141: Mechanism, ecophysiology and biotechnology of photosynthesis</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Photosynthesis: Fundamental Aspects to Global Perspectives (Proceedings of the 13th International Congress on Photosynthesis; CD-ROM).
ISBN
1-891276-39-5
ISSN
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e-ISSN
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Number of pages
1000
Pages from-to
566-568
Publisher name
Allen Press
Place of publication
Montreal, Kanada
Event location
Montreal, Kanada
Event date
Jan 1, 2005
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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