Cell differentiation of lignified tissues is controlled by cytokinins via negative regulation of master regulators NST1 and NST3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F15%3A00080755" target="_blank" >RIV/00216224:14740/15:00080755 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Cell differentiation of lignified tissues is controlled by cytokinins via negative regulation of master regulators NST1 and NST3

Popis výsledku v původním jazyce

Control over the equilibrium between cell division and cell differentiation represents the core developmental regulation across all kingdoms. Plant hormones cytokinins (CKs) and CK-regulated sensor histidine kinases were shown to regulate the process ofcell differentiation in both the shoot and root. However, the molecular mechanism of CK-controlled cell differentiation is far from being understood. We found that impaired CK signalling or biosynthesis leads to formation of vascular bundles with changedprotoxylem/metaxylem ratio and dramatically reduced water conductance. Increased lignification in both tracheary elements (TEs) and xylem fibers suggested disturbed cell differentiation. The genome-wide next-gen transcriptional profiling revealed upregulation throughout the hierarchical cascade of transcriptional regulations including the NAC TFs NST1 and SND1/NST3, the master transcriptional switches of secondary cell wall (SCW) formation acting at the top of the cascade.

Název v anglickém jazyce

Cell differentiation of lignified tissues is controlled by cytokinins via negative regulation of master regulators NST1 and NST3

Popis výsledku anglicky

Control over the equilibrium between cell division and cell differentiation represents the core developmental regulation across all kingdoms. Plant hormones cytokinins (CKs) and CK-regulated sensor histidine kinases were shown to regulate the process ofcell differentiation in both the shoot and root. However, the molecular mechanism of CK-controlled cell differentiation is far from being understood. We found that impaired CK signalling or biosynthesis leads to formation of vascular bundles with changedprotoxylem/metaxylem ratio and dramatically reduced water conductance. Increased lignification in both tracheary elements (TEs) and xylem fibers suggested disturbed cell differentiation. The genome-wide next-gen transcriptional profiling revealed upregulation throughout the hierarchical cascade of transcriptional regulations including the NAC TFs NST1 and SND1/NST3, the master transcriptional switches of secondary cell wall (SCW) formation acting at the top of the cascade.

Druh

O - Ostatní výsledky

CEP obor

EB - Genetika a molekulární biologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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