Aktivita xantofylového cyklu oddělených listu ječmene při jejich senescenci za tmy a světla.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F05%3A00001882" target="_blank" >RIV/61989592:15310/05:00001882 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Xanthophyll cycle activity in detached barley leaves senescing under dark and light.

Popis výsledku v původním jazyce

Senescence-induced changes in the xanthophyll cycle activity and chlorophyll fluorescence parameters were compared in detached barley (Hordeum vulgare L.) leaf segments kept for 6 days in darkness or under continuous white light (90 umol m-2 s-1). Beforedetachment of the leaf segments, the plants were grown at periodic regime (12 h light (90 umol m-2 s-1) /12 h dark). The de-epoxidation state of the xanthophyll cycle pigments (DEPS) in the leaf samples was determined immediately (the actual DEPS), after 1 h of dark-adaptation (the residual DEPS) and during 14 min of a high-light exposure (500 umol m-2 s-1) (the high-light induced DEPS). In the light-senescing segments, senescence was delayed pronouncedly compared to dark-senescing ones as the chlorophyll content, the photosystem 2 photochemistry and electron transport processes were highly maintained. Further, the actual DEPS increased, probably due to the increased mean light dose. The high-light induced increase in the DEPS was stim

Název v anglickém jazyce

Xanthophyll cycle activity in detached barley leaves senescing under dark and light.

Popis výsledku anglicky

Senescence-induced changes in the xanthophyll cycle activity and chlorophyll fluorescence parameters were compared in detached barley (Hordeum vulgare L.) leaf segments kept for 6 days in darkness or under continuous white light (90 umol m-2 s-1). Beforedetachment of the leaf segments, the plants were grown at periodic regime (12 h light (90 umol m-2 s-1) /12 h dark). The de-epoxidation state of the xanthophyll cycle pigments (DEPS) in the leaf samples was determined immediately (the actual DEPS), after 1 h of dark-adaptation (the residual DEPS) and during 14 min of a high-light exposure (500 umol m-2 s-1) (the high-light induced DEPS). In the light-senescing segments, senescence was delayed pronouncedly compared to dark-senescing ones as the chlorophyll content, the photosystem 2 photochemistry and electron transport processes were highly maintained. Further, the actual DEPS increased, probably due to the increased mean light dose. The high-light induced increase in the DEPS was stim

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GP522%2F01%2FP098" target="_blank" >GP522/01/P098: Vliv světla a celistvosti rostliny na funkční a strukturní změny thylakoidních membrán během senescence</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Photosynthetica

ISSN

0300-3604

e-ISSN

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Svazek periodika

43

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

117-124

Kód UT WoS článku

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EID výsledku v databázi Scopus

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