| Attributes | Values |
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| rdf:type
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| Description
| - Obsah cytokininů, rostlinných inhibitorů poslední vývojové fáze, senescence, je účinně řízen degradací katalyzovanou cytokinindehydrogenasou/oxidasou. V transgenních tabácích se zvýšenou expresí CKX, která snižuje obsah CK, jsme studovali průběh koncentrací chlorofylu a xantofylů během stárnutí. Dále jsme sledovali parametry pomalé indukce fluorescence chlorofylu a to minimální fluorescence Chl F0, maximální kvantový výtěžek fotochemie PS 2 (Fv/Fm), maximální poměr kvantových výtěžků fotochemických a nefotochemických dějů v PS 2 Fv/F0, nefotochemické zhášení (NPQ) a účinný kvantový výtěžek přeměny fotochemické energie v PS 2 (Φ2). Zaměřili jsme se na tři vývojová stadia – staré, dospělé a mladé a porovnávali jsme je se změnami v kontrolních tabákách. Stáří listů v tabákách se sníženou hladinou cytokininů nemělo vliv na fotosyntetické parametry Fv/Fm, Fv/F0, a Φ2 na rozdíl od kontrol, kde byl pozorován výrazný pokles během stárnutí. Parametr F0 v kontrolách se stářím listu rostl, ale v nejstarších... (cs)
- The content of cytokinins (CKs), the plant inhibitors of the final phase of plant development, senescence, is effectively controlled by irreversible degradation catalysed by cytokinin oxidase/dehydrogenase (CKX). In transgenic tobacco, denoted as AtCKX, with over-expressed CKX causing lowered CK content, we investigated changes in the time courses of chlorophyll (Chl) and xanthophyll (violaxanthin, antheraxanthin, zeaxanthin, neoxanthin, and lutein) contents. We also determined parameters of slow Chl fluorescence kinetics such as minimum Chl fluorescence yield in the darkadapted state F0, maximum quantum yield of PS2 photochemistry (Fv/Fm), maximum ratio of quantum yields of photochemical and concurrent non-photochemical processes in photosystem 2 (PS2), Fv/F0, non-photochemical quenching (NPQ), and effective quantum yield of photochemical energy conversion in PS2 (Φ2). We used three differen developmental leaf stages, old, mature, and young, and compared this with time courses of these characteris...
- The content of cytokinins (CKs), the plant inhibitors of the final phase of plant development, senescence, is effectively controlled by irreversible degradation catalysed by cytokinin oxidase/dehydrogenase (CKX). In transgenic tobacco, denoted as AtCKX, with over-expressed CKX causing lowered CK content, we investigated changes in the time courses of chlorophyll (Chl) and xanthophyll (violaxanthin, antheraxanthin, zeaxanthin, neoxanthin, and lutein) contents. We also determined parameters of slow Chl fluorescence kinetics such as minimum Chl fluorescence yield in the darkadapted state F0, maximum quantum yield of PS2 photochemistry (Fv/Fm), maximum ratio of quantum yields of photochemical and concurrent non-photochemical processes in photosystem 2 (PS2), Fv/F0, non-photochemical quenching (NPQ), and effective quantum yield of photochemical energy conversion in PS2 (Φ2). We used three differen developmental leaf stages, old, mature, and young, and compared this with time courses of these characteris... (en)
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| Title
| - Photosynthesis and protective mechanisms during ageing in transgenic tobacco leaves with over-expressed cytokinin oxidase/dehydrogenase and thus lowered cytokinin content
- Photosynthesis and protective mechanisms during ageing in transgenic tobacco leaves with over-expressed cytokinin oxidase/dehydrogenase and thus lowered cytokinin content (en)
- Fotosyntéza a ochranné mechanismy během stárnutí listů trangenního tabáku se zvýšenou expresí cytokininixidasy/dehydrogenasy a tím sníženou hladinou cytokininů (cs)
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| skos:prefLabel
| - Photosynthesis and protective mechanisms during ageing in transgenic tobacco leaves with over-expressed cytokinin oxidase/dehydrogenase and thus lowered cytokinin content
- Photosynthesis and protective mechanisms during ageing in transgenic tobacco leaves with over-expressed cytokinin oxidase/dehydrogenase and thus lowered cytokinin content (en)
- Fotosyntéza a ochranné mechanismy během stárnutí listů trangenního tabáku se zvýšenou expresí cytokininixidasy/dehydrogenasy a tím sníženou hladinou cytokininů (cs)
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| skos:notation
| - RIV/61389030:_____/06:00079979!RIV07-AV0-61389030
|
| 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
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61389030:_____/06:00079979
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - senescence; cytokinins; carotenoids; chlorophyll; xanthophylls cycle; photosynthetic efficiency; chlorophyll fluorescence; tobacco (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| 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
| |
| http://linked.open...iv/tvurceVysledku
| - Haisel, Daniel
- Mýtinová, Zuzana
- 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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