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| Description
| - Reactive oxygen species are known to increase in plant senescence. We investigated the participation of antioxidative enzymes in initiation of cotyledon senescence. Senescence of bean (Phaseolus vulgaris L.) cotyledons was modulated by UV C irradiation and by the decapitation of plant apices. Senescence was accompanied by a decrease of protein content and by a decrease of photochemical efficiency. A drop in activity of antioxidative enzymes preceded the onset of senescence in control plants. In cotyledons with prolonged life span, the decrease of antioxidant activities and the markers of senescence onset appeared at a similar age as in controls. Thus we presumed that the period from senescence initiation to cotyledon abscission was extended. On the other hand, in UV C irradiated plants we did not observe actual senescence initiation, and antioxidant enzymes although elevated, did not effectively play their role. The decrease of antioxidant enzymes activity and the markers of senescence appe...
- Reactive oxygen species are known to increase in plant senescence. We investigated the participation of antioxidative enzymes in initiation of cotyledon senescence. Senescence of bean (Phaseolus vulgaris L.) cotyledons was modulated by UV C irradiation and by the decapitation of plant apices. Senescence was accompanied by a decrease of protein content and by a decrease of photochemical efficiency. A drop in activity of antioxidative enzymes preceded the onset of senescence in control plants. In cotyledons with prolonged life span, the decrease of antioxidant activities and the markers of senescence onset appeared at a similar age as in controls. Thus we presumed that the period from senescence initiation to cotyledon abscission was extended. On the other hand, in UV C irradiated plants we did not observe actual senescence initiation, and antioxidant enzymes although elevated, did not effectively play their role. The decrease of antioxidant enzymes activity and the markers of senescence appe... (en)
- Je známo, že množství volných kyslíkových radikálů roste během rostlinné senescence. Studovali jsme účast antioxidačních enzymů v průběhu senescence. Délku života děložních listů fazolu jsme modulovali použitím UV C záření a dekapitací rostlinných vrcholků. V kontrolních rostlinách pokles aktivity antioxidačních enzymů předcházel počátek senescence. V děložních listech s prodlouženou délkou života se počátek senescence i pokles antioxidační aktivity časově shodoval s kontrolami. To naznačuje, že u těchto rostlin došlo pouzek prodloužení období senescence. U rostlin ozářených UV jsme nepozorovali skutečný nástup senescence, patrně došlo k porušení antioxidační ochrany ještě před nástupem senescence. (cs)
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| Title
| - The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 1. The antioxidant enzyme activities
- The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 1. The antioxidant enzyme activities (en)
- Kapacita antioxidační ochrany během modulovaného stárnutí děložních listů fazolu (Phaseolus vulgaris. L.) 1. Aktivita antioxidačních enzymů (cs)
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| skos:prefLabel
| - The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 1. The antioxidant enzyme activities
- The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 1. The antioxidant enzyme activities (en)
- Kapacita antioxidační ochrany během modulovaného stárnutí děložních listů fazolu (Phaseolus vulgaris. L.) 1. Aktivita antioxidačních enzymů (cs)
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| skos:notation
| - RIV/61389030:_____/07:00078875!RIV07-AV0-61389030
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA522/03/0312), Z(AV0Z50380511)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61389030:_____/07:00078875
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - cell biochemistry; lipid peroxidation; ageing (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Cell Biochemistry and Function
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Procházková, Dagmar
- Wilhelmová, Naděžda
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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