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Low-light-induced Violaxanthin De-epoxidation in Shortly Preheated Leaves: Uncoupling from ?pH-dependent Non-photochemical Quenching

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F10%3A10212196" target="_blank" >RIV/61989592:15310/10:10212196 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Low-light-induced Violaxanthin De-epoxidation in Shortly Preheated Leaves: Uncoupling from ?pH-dependent Non-photochemical Quenching

  • Original language description

    Plants protect themselves against excessive light by the induction of DpH-dependent non-photochemical quenching (qE) that is associated with de-epoxidation of violaxanthin (V) to zeaxanthin (Z) in thylakoid membranes. In this work, we report that low light (12 ?mol photons m-2 s-1) is sufficient for a marked stimulation of the V to Z conversion in shortly preheated wheat leaves (5 min, 40°C), but without a substantial increase in qE. Re-irradiation of these leaves with high light led to a rapid induction of non-photochemical quenching, implying a potential photoprotective role of low-light-induced Z in preheated leaves. On the contrary to low light conditions, preheated leaves exposed to high light behaved similarly to non-heated leaves with respect tothe V to Z conversion and qE induction. The obtained results indicate that low-light-induced lumen acidification in preheated leaves is high enough to activate V de-epoxidation, but not sufficiently high to induce the formation of quench

  • 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

    <a href="/en/project/GA301%2F08%2F1649" target="_blank" >GA301/08/1649: Modulation of cell division of normal and cancer cells by cyclin-dependent kinase inhibitors</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2010

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Photochemistry and Photobiology

  • ISSN

    0031-8655

  • e-ISSN

  • Volume of the periodical

    86

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    5

  • Pages from-to

  • UT code for WoS article

    000277301700034

  • EID of the result in the Scopus database