Cytokinin signalling regulates organ identity via the AHK4 receptor in Arabidopsis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F18%3A00493505" target="_blank" >RIV/61389030:_____/18:00493505 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/18:73592260

Result on the web

<a href="http://dx.doi.org/10.1242/dev.163907" target="_blank" >http://dx.doi.org/10.1242/dev.163907</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1242/dev.163907" target="_blank" >10.1242/dev.163907</a>

Result language

angličtina

Original language name

Cytokinin signalling regulates organ identity via the AHK4 receptor in Arabidopsis

Original language description

Mutual interactions of the phytohormones, cytokinins and auxin determine root or shoot identity during postembryonic de novo organogenesis in plants. However, our understanding of the role of hormonal metabolism and perception during early stages of cell fate reprogramming is still elusive. Here we show that auxin activates root formation, whereas cytokinins mediate early loss of the root identity, primordia disorganisation and initiation of shoot development. Exogenous and endogenous cytokinins influence the initiation of newly formed organs, as well as the pace of organ development. The process of de novo shoot apical meristem establishment is accompanied by accumulation of endogenous cytokinins, differential regulation of genes for individual cytokinin receptors, strong activation of AHK4-mediated signalling and induction of the shoot-specific homeodomain regulator WUSCHEL. The last is associated with upregulation of isopentenyladenine-type cytokinins, revealing higher shoot-forming potential when compared with trans-zeatin. Moreover, AHK4-controlled cytokinin signalling negatively regulates the root stem cell organiser WUSCHEL RELATED HOMEOBOX 5 in the root quiescent centre. We propose an important role for 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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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10605 - Developmental biology

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)

Publication year

2018

Confidentiality

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

Name of the periodical

Development

ISSN

0950-1991

e-ISSN

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Volume of the periodical

145

Issue of the periodical within the volume

14

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

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UT code for WoS article

000440421300010

EID of the result in the Scopus database

2-s2.0-85050750952