Cytokinin signalling regulates organ identity via AHK4 receptor in Arabidopsis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00118735" target="_blank" >RIV/00216224:14310/18:00118735 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Cytokinin signalling regulates organ identity via AHK4 receptor in Arabidopsis
Original language description
Plants are able to undergo postembryonic de novo organogenesis and thus effectively regenerate damaged tissues. Root or shoot identity of newly formed organs depends on mutual interactions of the phytohormones cytokinins and auxin. However, our understanding to the role of hormonal regulations in the cell fate reprograming is still elusive. In the hypocotyl explant assay, auxin activated root formation while cytokinins mediated early loss of the root identity, disorganization of primordia structure and initiation of shoot development. Exogenous but also endogenous cytokinins influenced both the initiation of newly formed organs as well as the pace of organ developmental sequence. The process of de novo shoot apical meristem establishment was accompanied by strong activation of AHK4-mediated cytokinin signalling, induction of shoot-specific homeodomain regulator WUSCHEL specifically in the disorganized primordia and upregulation of endogenous isopentenyladenine-type cytokinins. Moreover, AHK4-controlled cytokinin signalling negatively regulates root stem cell organizer WUSCHEL RELATED HOMEOBOX 5 in the root quiescent centre. We propose an important role of endogenous cytokinin biosynthesis and AHK4-mediated cytokinin signalling in the control of de novo induced organ identity.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
10600 - Biological sciences
Result continuities
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>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů