About: Response of cytokinin pool and cytokinin oxidase/dehydrogenase activity to abscisic acid exhibits organ specificity in peas     Goto   Sponge   NotDistinct   Permalink

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  • Vliv kyseliny abscisové n(ABA, 0.5-10 μM) na hladiny cytokininů a aktivitu cytokinin oxidázy/dehydrogenázy (CKX EC: 1.5.99.12) byl sledován v nejmladších, plně expandovaných listech a sekundárních kořenech dvou kultivarů hrachu (Pisum sativum) lišících se vegetační periodou. Odezva CKX na zvýšenou hladinu ABA vykazovala orgánovou specifitu. Inkubace s ABA měla dopad na hladiny cytokininů v nadzemních částech obou kultivarů. Specifická aktivita CKX byla signifikantně ovlivněna především v kořenech. Výsledky naznačují, že vliv ABA na hladiny cytokininů se projevuje v listech. Působení ABA zahrnuje ovlivnění signálů z kořenů, na jejichž modulaci se podílí CKX. Tento enzym pravděpodobně ovlivňuje transport aktivních cytokininů cévními svazky z kořenů do nadzemních částí. (cs)
  • Changes in cytokinin pool and cytokinin oxidase/dehydrogenase activity (CKX EC: 1.5.99.12) in response to increasing abscisic acid (ABA) concentrations (0.5-10 mu M) were assessed in the last fully expanded leaves and secondary roots of two pea (Pisum sativum) varieties with different vegetation periods. Certain organ diversity in CKX response to exogenous ABA was observed. Treatment provoked altered cytokinin pool in the aboveground parts of both studied cultivars. Specific CKX activity was influenced significantly basically in roots of the treated plants. Results suggest that ABA-mediated cytokinin pool changes are leaf-specific and involve certain root signals in which CKX activity presents an important link. This enzymatic activity most probably regulates vascular transport of active cytokinins from roots to shoots.
  • Changes in cytokinin pool and cytokinin oxidase/dehydrogenase activity (CKX EC: 1.5.99.12) in response to increasing abscisic acid (ABA) concentrations (0.5-10 mu M) were assessed in the last fully expanded leaves and secondary roots of two pea (Pisum sativum) varieties with different vegetation periods. Certain organ diversity in CKX response to exogenous ABA was observed. Treatment provoked altered cytokinin pool in the aboveground parts of both studied cultivars. Specific CKX activity was influenced significantly basically in roots of the treated plants. Results suggest that ABA-mediated cytokinin pool changes are leaf-specific and involve certain root signals in which CKX activity presents an important link. This enzymatic activity most probably regulates vascular transport of active cytokinins from roots to shoots. (en)
Title
  • Response of cytokinin pool and cytokinin oxidase/dehydrogenase activity to abscisic acid exhibits organ specificity in peas
  • Vliv kyseliny abscisové na hladiny cytokininů a aktivitu cytokinin oxidázy/dehydrogenázy vykazuje v rostlinách hrachu orgánovou specifitu (cs)
  • Response of cytokinin pool and cytokinin oxidase/dehydrogenase activity to abscisic acid exhibits organ specificity in peas (en)
skos:prefLabel
  • Response of cytokinin pool and cytokinin oxidase/dehydrogenase activity to abscisic acid exhibits organ specificity in peas
  • Vliv kyseliny abscisové na hladiny cytokininů a aktivitu cytokinin oxidázy/dehydrogenázy vykazuje v rostlinách hrachu orgánovou specifitu (cs)
  • Response of cytokinin pool and cytokinin oxidase/dehydrogenase activity to abscisic acid exhibits organ specificity in peas (en)
skos:notation
  • RIV/61389030:_____/08:00320003!RIV09-AV0-61389030
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(AV0Z50380511)
http://linked.open...iv/cisloPeriodika
  • 2
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
  • 392564
http://linked.open...ai/riv/idVysledku
  • RIV/61389030:_____/08:00320003
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Abscisic acid; Cytokinins; Cytokinin (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • PL - Polská republika
http://linked.open...ontrolniKodProRIV
  • [A287B19838A3]
http://linked.open...i/riv/nazevZdroje
  • Acta Physiologiae Plantarum
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 30
http://linked.open...iv/tvurceVysledku
  • Macháčková, Ivana
  • Malbeck, Jiří
  • Trávníčková, Alena
  • Todorova, D.
  • Vaseva, I.
http://linked.open...ain/vavai/riv/wos
  • 000252887800004
http://linked.open...n/vavai/riv/zamer
issn
  • 0137-5881
number of pages
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