About: The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 2. The low-molecular weight antioxidants     Goto   Sponge   NotDistinct   Permalink

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  • The aim of the present work was to evaluate non-enzymic antioxidants during natural and artificially modulated senescence. Senescence of bean (Phaseolus vulgaris L. cv. Jantar) cotyledons was modulated by UV C irradiation or by the decapitation of plants apices. The content of -carotene and zeaxanthin decreased in control and decapitated plants but in UV C irradiated plants these contents increased. The degree of de-epoxidation increased in all cultivations with age. The content of total glutathione (sum of reduced and oxidized) sharply decreased in bean cotyledons grown in all conditions. Interestingly, the content of total ascorbate increased at the end of cotyledon life span of control and decapitated plants but decreased in UV plants. Decrease of reduced/oxidized ratio of ascorbate and glutathione during cotyledon ageing confirmed increasing oxidative stress during senescence in all cultivations.
  • The aim of the present work was to evaluate non-enzymic antioxidants during natural and artificially modulated senescence. Senescence of bean (Phaseolus vulgaris L. cv. Jantar) cotyledons was modulated by UV C irradiation or by the decapitation of plants apices. The content of -carotene and zeaxanthin decreased in control and decapitated plants but in UV C irradiated plants these contents increased. The degree of de-epoxidation increased in all cultivations with age. The content of total glutathione (sum of reduced and oxidized) sharply decreased in bean cotyledons grown in all conditions. Interestingly, the content of total ascorbate increased at the end of cotyledon life span of control and decapitated plants but decreased in UV plants. Decrease of reduced/oxidized ratio of ascorbate and glutathione during cotyledon ageing confirmed increasing oxidative stress during senescence in all cultivations. (en)
  • Cílem práce bylo stanovit množství nízkomolekulárních antioxidantů během přirozené a modulované senescence. Senescence děložních listů fazolu byla ovlivněna UV C zářením nebo dekapitací rostlinných vrcholků. Obsah -karotenu klesl u kontrolních a dekapitovaných rostlin, ale vzrostl u rostlin ozařovaných. Míra deepoxidace rostla se vzrůstajícím věkem u však skupin. Obsah celkového glutathionu prudce klesal. Obsah celkového askorbátu vzrostl v dělohách kontrolních a dekapitovaných rostlin, ale poklesl u ozářených rostlin. Pokles poměru mezi redukovaným a oxidovaný glutathionem i askorbátem během stárnutí potvrdil vzrůstající stres během senescence u všech sledovaných skupin rostlin. (cs)
Title
  • The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 2. The low-molecular weight antioxidants
  • Kapacita antioxidační ochrany během modulovaného stárnutí děložních listů fazolu (Phaseolus vulgaris L.) 2. Nízkomolekulární antioxidanty (cs)
  • The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 2. The low-molecular weight antioxidants (en)
skos:prefLabel
  • The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 2. The low-molecular weight antioxidants
  • Kapacita antioxidační ochrany během modulovaného stárnutí děložních listů fazolu (Phaseolus vulgaris L.) 2. Nízkomolekulární antioxidanty (cs)
  • The capacity of antioxidant protection during modulated ageing of bean (Phaseolus vulgaris L.) cotyledons. 2. The low-molecular weight antioxidants (en)
skos:notation
  • RIV/61389030:_____/07:00078876!RIV07-AV0-61389030
http://linked.open.../vavai/riv/strany
  • 97;102
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA522/03/0312), Z(AV0Z50380511)
http://linked.open...iv/cisloPeriodika
  • -
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 412590
http://linked.open...ai/riv/idVysledku
  • RIV/61389030:_____/07:00078876
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • ascorbate; beta-carotene; decapitation (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [4F4C06C6F53B]
http://linked.open...i/riv/nazevZdroje
  • Cell Biochemistry and Function
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 25
http://linked.open...iv/tvurceVysledku
  • Procházková, Dagmar
  • Wilhelmová, Naděžda
http://linked.open...n/vavai/riv/zamer
issn
  • 0263-6484
number of pages
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