About: Is the degradation of cytokinins in plants assisted by phenolics?

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	V článku je kladena otázka, zda se účastní degradace cytokininů v rostlinách fenolové látky? (cs) Degradation of cytokinins in plants is controlled by flavoprotein cytokinin dehydrogenase (CKX, EC 1.5.99.12). Cleavage of the cytokinin substrate proceeds via a ternary complex involving covalently bound FAD cofactor and a quinonic electron acceptor 1,2. Maize kernels 3 weeks after pollination and 2-week-old maize seedlings were examined. CKX activity was monitored using a spectrophotometric assay of the product aldehyde with 4-aminophenol3. Histochemical localization of CKX activity was done with PMS/NBT redox-dye system. Activity of laccase was stained with 3,3#-diaminobenzidine. Immunochemical detection of CKX protein was done using specific antibody against the enzyme from maize 4. CKX from maize showed the capability of using oxidation products of guaiacol, catechol, caffeic acid, acetosyringone, some flavonoids and several other compounds as electron acceptors. Further experiments revealed that the electron acceptors may be generated in vivo from plant phenolics by other enzymatic systems, e.g. Degradation of cytokinins in plants is controlled by flavoprotein cytokinin dehydrogenase (CKX, EC 1.5.99.12). Cleavage of the cytokinin substrate proceeds via a ternary complex involving covalently bound FAD cofactor and a quinonic electron acceptor 1,2. Maize kernels 3 weeks after pollination and 2-week-old maize seedlings were examined. CKX activity was monitored using a spectrophotometric assay of the product aldehyde with 4-aminophenol3. Histochemical localization of CKX activity was done with PMS/NBT redox-dye system. Activity of laccase was stained with 3,3#-diaminobenzidine. Immunochemical detection of CKX protein was done using specific antibody against the enzyme from maize 4. CKX from maize showed the capability of using oxidation products of guaiacol, catechol, caffeic acid, acetosyringone, some flavonoids and several other compounds as electron acceptors. Further experiments revealed that the electron acceptors may be generated in vivo from plant phenolics by other enzymatic systems, e.g. (en)
Title	Is the degradation of cytokinins in plants assisted by phenolics? Is the degradation of cytokinins in plants assisted by phenolics? (en) Účastní se degradace cytokininů v rostlinách fenolové látky? (cs)
skos:prefLabel	Is the degradation of cytokinins in plants assisted by phenolics? Is the degradation of cytokinins in plants assisted by phenolics? (en) Účastní se degradace cytokininů v rostlinách fenolové látky? (cs)
skos:notation	RIV/61989592:15310/04:00002097!RIV/2005/GA0/153105/N
http://linked.open.../vavai/riv/strany	49
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA522/03/0979), Z(MSM 153100008)
http://linked.open...iv/cisloPeriodika	S
http://linked.open...vai/riv/dodaniDat	2005
http://linked.open...aciTvurceVysledku	Drábek, Jiří Frébort, Ivo Frébortová, Jitka Galuszka, Petr Popelková, Hana
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	569027
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/04:00002097
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	cytokinin;cytokinin oxidase/dehydrogenase;phenolic compounds (en)
http://linked.open.../riv/klicoveSlovo	cytokinin phenolic compounds cytokinin oxidase/dehydrogenase
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[481DBCA61653]
http://linked.open...i/riv/nazevZdroje	Acta Universitatis Palackianae Olomucensis, Facultas Rerum Naturalium, Chemica
http://linked.open...in/vavai/riv/obor	CE
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Organization of cytokinin dehydrogenase genes in cereals and mechanism of the catalytic reaction of cytokinin degradation
http://linked.open...UplatneniVysledku	2004
http://linked.open...v/svazekPeriodika	43
http://linked.open...iv/tvurceVysledku	Drábek, Jiří Popelková, Hana Frébort, Ivo Frébortová, Jitka Galuszka, Petr Bilyeu, Kristin D.
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20153100008
issn	0232-0061
number of pages	275 (xsd:int)
http://localhost/t...ganizacniJednotka	15310

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