Detailed Information on Publication Record
2018
Cytokinin signalling regulates organ identity via AHK4 receptor in Arabidopsis.
PERNISOVÁ, Markéta, Martina GROCHOVÁ, Tomáš KONEČNÝ, Lenka PLAČKOVÁ, Danka HARUŠTIAKOVÁ et. al.Basic information
Original name
Cytokinin signalling regulates organ identity via AHK4 receptor in Arabidopsis.
Authors
PERNISOVÁ, Markéta (203 Czech Republic, belonging to the institution), Martina GROCHOVÁ (203 Czech Republic), Tomáš KONEČNÝ (203 Czech Republic, belonging to the institution), Lenka PLAČKOVÁ (203 Czech Republic), Danka HARUŠTIAKOVÁ (703 Slovakia, belonging to the institution), Tatsuo KAKIMOTO (392 Japan), Marcus HEISLER (276 Germany), Ondřej NOVÁK (203 Czech Republic) and Jan HEJÁTKO (203 Czech Republic, guarantor, belonging to the institution)
Edition
Development, 2018, 0950-1991
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10605 Developmental biology
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 5.763
RIV identification code
RIV/00216224:14740/18:00101227
Organization unit
Central European Institute of Technology
UT WoS
000440421300010
Keywords in English
Arabidopsis; Cytokinin metabolism; Cytokinin signalling; De novo organogenesis; Root; Shoot
Tags
International impact, Reviewed
Změněno: 24/4/2019 09:29, Mgr. Pavla Foltynová, Ph.D.
Abstract
V originále
Mutual interactions of the phytohormones cytokinins and auxin determine root or shoot identity during postembryonic de novo organogenesis in plants. However, our understanding to the role of hormonal metabolism and perception during early stages of cell fate reprograming is still elusive. In the hypocotyl explant assay, auxin activated root formation while cytokinins mediated early loss of the root identity, primordia disorganization and initiation of shoot development. Exogenous but also endogenous cytokinins influenced 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 accumulation of endogenous cytokinins, differential regulation of genes for individual cytokinin receptors, strong activation of AHK4-mediated signalling and induction of shoot-specific homeodomain regulator WUSCHEL. The latter associated with upregulation of isopentenyladenine-type cytokinins, revealing higher shoot-forming potential when compared with trans-zeatin. Moreover, AHK4-controlled cytokinin signalling negatively regulated 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.
Links
| GA13-25280S, research and development project |
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| GP14-30004P, research and development project |
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| LH14104, research and development project |
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| LM2015062, research and development project |
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| LQ1601, research and development project |
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