Cytokinins - regulators of de novo shoot organogenesis.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F23%3A00133427" target="_blank" >RIV/00216224:14310/23:00133427 - isvavai.cz</a>

Výsledek na webu

<a href="https://csebr.cz/plantmethods2023/" target="_blank" >https://csebr.cz/plantmethods2023/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Cytokinins - regulators of de novo shoot organogenesis.

Popis výsledku v původním jazyce

Plants, unlike animals, possess a unique developmental plasticity, that allows them to adapt to changing environmental conditions. A fundamental aspect of this plasticity is their ability to undergo postembryonic de novo organogenesis. This strategy requires the presence of regulators that mediate specific spatiotemporal changes in developmental programs. The phytohormones cytokinins and auxin have been known as the principal regulators of plant development for a long time. In de novo organogenesis, auxin is the principal morphogen required to induce new organ onset, while cytokinins modulate the type of organogenic response. In in vitro regeneration assays, the presence of auxin alone or high auxin-to-cytokinin concentration ratio in media induces root regeneration from various plant tissues. On the other hand, if the auxin-to-cytokinin ratio is low, shoots are formed. The process of de novo shoot apical meristem initiation is accompanied by strong activation of AHK4-mediated cytokinin signalling and induction of shoot-specific homeodomain regulator WUSCHEL specifically in the regenerating organs. Exogenous but also endogenous cytokinins influence both the initiation of newly formed organs as well as the pace of organ developmental sequence, especially endogenous isopentenyladenine-type cytokinins. We propose an important role of cytokinin biosynthesis and metabolism in the control of de novo induced organ identity.

Název v anglickém jazyce

Cytokinins - regulators of de novo shoot organogenesis.

Popis výsledku anglicky

Plants, unlike animals, possess a unique developmental plasticity, that allows them to adapt to changing environmental conditions. A fundamental aspect of this plasticity is their ability to undergo postembryonic de novo organogenesis. This strategy requires the presence of regulators that mediate specific spatiotemporal changes in developmental programs. The phytohormones cytokinins and auxin have been known as the principal regulators of plant development for a long time. In de novo organogenesis, auxin is the principal morphogen required to induce new organ onset, while cytokinins modulate the type of organogenic response. In in vitro regeneration assays, the presence of auxin alone or high auxin-to-cytokinin concentration ratio in media induces root regeneration from various plant tissues. On the other hand, if the auxin-to-cytokinin ratio is low, shoots are formed. The process of de novo shoot apical meristem initiation is accompanied by strong activation of AHK4-mediated cytokinin signalling and induction of shoot-specific homeodomain regulator WUSCHEL specifically in the regenerating organs. Exogenous but also endogenous cytokinins influence both the initiation of newly formed organs as well as the pace of organ developmental sequence, especially endogenous isopentenyladenine-type cytokinins. We propose an important role of cytokinin biosynthesis and metabolism in the control of de novo induced organ identity.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10600 - Biological sciences

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)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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