About: Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes.

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About: Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	V práci bylo zjištěno, že v ranném stádiu působeni UV-B produkce reaktivních forem kyslíku (hydroxalové radikály a peroxid vodíku) závisí na elektronovém transportu a ne výhradně na UV-B. (cs) The production of reactive oxygen species (ROS) was studied in isolated thylakoid membranes exposed to 312 nm UV-B irradiation. Hydroxyl radicals (-OH) and hydrogen peroxide were measured directly, using a newly developed method based on hydroxylation of terephthalic acid and the homovanillic acid/peroxidase assay, respectively. At the early stage of UV-B stress (doses lower than 2.0 J cm/-2), -OH were derived from superoxide radicals via hydrogen peroxide. Production of these ROS was dependent on photosynthetic electron transport and was not exclusive to UV-B. Both ROS were found in samples exposed to the same doses of PAR, suggesting that the observed ROS are by-products of the UV-B driven electron transport rather than specific initiators of the UV-B-induced damage. After longer exposure of thylakoids to UV-B, leading to the inactivation of PSII centres, a small amount of -OH was still observed in thylakoids, even though no free hydrogen peroxide was detected. The production of reactive oxygen species (ROS) was studied in isolated thylakoid membranes exposed to 312 nm UV-B irradiation. Hydroxyl radicals (-OH) and hydrogen peroxide were measured directly, using a newly developed method based on hydroxylation of terephthalic acid and the homovanillic acid/peroxidase assay, respectively. At the early stage of UV-B stress (doses lower than 2.0 J cm/-2), -OH were derived from superoxide radicals via hydrogen peroxide. Production of these ROS was dependent on photosynthetic electron transport and was not exclusive to UV-B. Both ROS were found in samples exposed to the same doses of PAR, suggesting that the observed ROS are by-products of the UV-B driven electron transport rather than specific initiators of the UV-B-induced damage. After longer exposure of thylakoids to UV-B, leading to the inactivation of PSII centres, a small amount of -OH was still observed in thylakoids, even though no free hydrogen peroxide was detected. (en)
Title	Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes. Hydroxylové radikály nejsou protagonisté poškození izolovaných thylakoidních membrán pomocí UV-B. (cs) Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes. (en)
skos:prefLabel	Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes. Hydroxylové radikály nejsou protagonisté poškození izolovaných thylakoidních membrán pomocí UV-B. (cs) Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes. (en)
skos:notation	RIV/61989592:15310/07:00004841!RIV08-MSM-15310___
http://linked.open.../vavai/riv/strany	1112-1121
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6198959215)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Šnyrychová, Iva
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	425143
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/07:00004841
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	hydroxal radicals; UV-B; thylakoid membranes; terephtalate (en)
http://linked.open.../riv/klicoveSlovo	hydroxal radicals terephtalate thylakoid membranes UV-B
http://linked.open...odStatuVydavatele	AU - Australské společenství
http://linked.open...ontrolniKodProRIV	[F5BBC807CF72]
http://linked.open...i/riv/nazevZdroje	Functional Plant Biology
http://linked.open...in/vavai/riv/obor	BO
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	34
http://linked.open...iv/tvurceVysledku	Šnyrychová, Iva Hideg, Eva Kós, Péter
http://linked.open...n/vavai/riv/zamer	Variabilita složek a interakcí v rostlinném patosystému a vliv faktorů prostředí na jejich projev
issn	1445-4408
number of pages	10 (xsd:int)
http://localhost/t...ganizacniJednotka	15310
is http://linked.open...avai/riv/vysledek of	Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes. Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes. Hydroxyl radicals are not the protagonists of UV-B induced damage in isolated thylakoid membranes.

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