Cytokinins are central regulators of cambial activity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F08%3A00005612" target="_blank" >RIV/61989592:15310/08:00005612 - isvavai.cz</a>
Alternative codes found
RIV/61389030:_____/08:00323545
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Cytokinins are central regulators of cambial activity
Original language description
The roots and stems of dicotyledonous plants thicken by the cell proliferation in the cambium. Cambial proliferation changes in response to environmental factors; however, the molecular mechanisms that regulate cambial activity are largely unknown. The quadruple Arabidopsis thaliana mutant atipt1;3;5;7, in which 4 genes encoding cytokinin biosynthetic isopentenyltransferases are disrupted by T-DNA insertion, was unable to form cambium and showed reduced thickening of the root and stem. The atipt3 singlemutant, which has moderately decreased levels of cytokinins, exhibited decreased root thickening without any other recognizable morphological changes. Addition of exogenously supplied cytokinins to atipt1;3;5;7 reactivated the cambium in a dose-dependent manner. When an atipt1;3;5;7 shoot scion was grafted onto WT root stock, both the root and shoot grew normally and trans-zeatin-type (tZ-type) cytokinins in the shoot were restored to WT levels, but isopentenyladenine-type cytokinins in
Czech name
Cytokininy jsou hlavními regulátory kambiální aktivity
Czech description
Kořeny a stonky dvouděložných rostlin tloustnou buněčnou proliferací v kambiu. Tato aktivita odráží změny prostředí, avšak molekulární mechanismy, které regulují kambiální aktivitu jsou většinou neznámé. S využitím mutantů isopentenyltransferas, které kódují cytokininové biosyntetické enzymy bylo prokázáno, že snížená hladina cytokininů vede k redukci sekundárního tloustnutí. Exogenně aplikované cytokininy byly schopny tento fenotyp zvrátit způsobem závislým na koncentraci.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CE - Biochemistry
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Proceedings of the National Academy of Sciences of the USA
ISSN
0027-8424
e-ISSN
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Volume of the periodical
105
Issue of the periodical within the volume
50
Country of publishing house
US - UNITED STATES
Number of pages
5
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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