Function of plant defense secondary metabolite in cytokinin degradation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F10%3A10217288" target="_blank" >RIV/61989592:15310/10:10217288 - isvavai.cz</a>

Alternative codes found

RIV/61389030:_____/10:00359310

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Function of plant defense secondary metabolite in cytokinin degradation

Original language description

The flavoenzyme cytokinin dehydrogenace (CKX) catalyzes an irreversible deactivation of plant hormones cytokinins through oxidative cleavage of the cytokinin side chain to Šeld adenine or adenosine and an aldehyde. In the catalytic cycle of CKX, the cytokinin-reduced flavin cofactor is reoxidized by a suitable electron acceptor. We have recently demonstrated that the oxidation products of natural hydroxamic acid 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) function as effective electron acceptors of apoplastic CKX from maize. The stable oxidation product of DIMBOA reacting with peroxidase or laccase was identified as 4-nitrosoresorcinol 1-monomethyl ether (coniferron), which, however, is only a weak electron acceptor of CKX. Further analyses suggested formativ of transient free radicals that were estimated to reoxidize the cytokininreduced flavin cofactor of CKX with the rates comparable to those of flavin reduction.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2010

Confidentiality

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

Name of the periodical

Plant Signaling &amp; Behavior

ISSN

1559-2316

e-ISSN

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Volume of the periodical

5

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

3

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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