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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

  • DOI - Digital Object Identifier

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

Result continuities

  • Project

  • 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

  • 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

  • UT code for WoS article

  • EID of the result in the Scopus database