Protective cytokinin action switches to damaging during senescence of detached wheat leaves in continuous light.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F06%3A00002725" target="_blank" >RIV/61989592:15310/06:00002725 - isvavai.cz</a>

Alternative codes found

RIV/61389030:_____/06:00030709

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Protective cytokinin action switches to damaging during senescence of detached wheat leaves in continuous light.

Original language description

The effect of exogenous application of the cytokinin meta-topolin (mT; N6-(meta-hydroxybenzyl)adenine) on artificial senescence of detached wheat leaves (Triticum aestivum L. cv. Hereward) was studied and compared in leaves senescing under continuous light (100 ?mol photons m-2 s-1) and darkness. Senescence-induced deterioration in structure and function of the photosynthetic apparatus was characterized by reduction in chlorophyll content, maximal efficiency of photosystem II photochemistry (FV/FM) andthe rate of CO2 assimilation, by increase in the excitation pressure on photosystem II (1-qP) and a level of lipid peroxidation, and by modifications in chloroplast ultrastructure. While in darkened leaf segments mT effectively slowed senescence-inducedchanges in all measured parameters, in light-senescing segments the effect of mT changed into opposite a few days after detachment. We observed an overexcitation of photosynthetic apparatus, as indicated by pronounced increases in the exc

Czech name

Spuštění ochranné role cytokininů u oddělených listů pšenice během jejich poškození senescencí na kontinuálním světle.

Czech description

Byla studována senescence na kontinuálním světle oddělených listů pšenice. Bylo zjištěno, že aplikace cytokininu meta-topolin zpomalí senescenci těchto listů. Tyto změny byly diskutovány vzhledem ke známým faktům.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BO - Biophysics

OECD FORD branch

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Project

<a href="/en/project/IBS4055304" target="_blank" >IBS4055304: New types of plant growth regulators</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

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

Name of the periodical

Physiologia Plantarum

ISSN

0031-9317

e-ISSN

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Volume of the periodical

126

Issue of the periodical within the volume

2

Country of publishing house

DK - DENMARK

Number of pages

21

Pages from-to

247-267

UT code for WoS article

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EID of the result in the Scopus database

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