Cytokinin-induced upregulation of cytokinin oxidase activity in tobacco includes changes in enzyme glycosylation and secretion.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F03%3A56033106" target="_blank" >RIV/61389030:_____/03:56033106 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Cytokinin-induced upregulation of cytokinin oxidase activity in tobacco includes changes in enzyme glycosylation and secretion.

Popis výsledku v původním jazyce

Regulation of cytokinin oxidase (CKX) activity in relation to enzyme glycosylation and secretion was studied in wild-type (WT) and transgenic conditionally isopentenyltransferase gene (ipt)-expressing (IPT) tobacco (Nicotiana tabacum L. cv. Wisconsin 38)cell suspensions, calli and leaves. An increase in endogenous cytokinin content due to the tetracycline (Tc)-induced derepression of the ipt gene transcription or surface application of N6-benzylaminopurine (BA) resulted in significant enhancement of CKX activity in all these plant materials. As revealed by Concanavalin A-Sepharose 4B chromatography the cytokinin-induced enhancement of CKX activity was associated predominantly with the N-glycoform of the enzyme (10- to 15-fold increase) in calli and leaves. Application of BA to the culture media of WT and IPT cell suspensions and the derepression of the ipt by Tc substantially enhanced endogenous levels of isoprenoid cytokinins and CKX activity in both cells and the culture medium. Mos

Název v anglickém jazyce

Cytokinin-induced upregulation of cytokinin oxidase activity in tobacco includes changes in enzyme glycosylation and secretion.

Popis výsledku anglicky

Regulation of cytokinin oxidase (CKX) activity in relation to enzyme glycosylation and secretion was studied in wild-type (WT) and transgenic conditionally isopentenyltransferase gene (ipt)-expressing (IPT) tobacco (Nicotiana tabacum L. cv. Wisconsin 38)cell suspensions, calli and leaves. An increase in endogenous cytokinin content due to the tetracycline (Tc)-induced derepression of the ipt gene transcription or surface application of N6-benzylaminopurine (BA) resulted in significant enhancement of CKX activity in all these plant materials. As revealed by Concanavalin A-Sepharose 4B chromatography the cytokinin-induced enhancement of CKX activity was associated predominantly with the N-glycoform of the enzyme (10- to 15-fold increase) in calli and leaves. Application of BA to the culture media of WT and IPT cell suspensions and the derepression of the ipt by Tc substantially enhanced endogenous levels of isoprenoid cytokinins and CKX activity in both cells and the culture medium. Mos

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EB - Genetika a molekulární biologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physiologia Plantarum

ISSN

0031-9317

e-ISSN

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Svazek periodika

117

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DK - Dánské království

Počet stran výsledku

11

Strana od-do

11-21

Kód UT WoS článku

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EID výsledku v databázi Scopus

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