Cytokinins modulate auxin-induced organogenesis via regulation of the auxin efflux

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F09%3A00039833" target="_blank" >RIV/00216224:14310/09:00039833 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Cytokinins modulate auxin-induced organogenesis via regulation of the auxin efflux

Popis výsledku v původním jazyce

Auxin and cytokinin (CK) are important regulators of the developmental fate of pluripotent plant cells. The molecular mechanism of their interaction in control of plant organogenesis is largely unknown. We show that auxin, but not CK, is able to induce organogenic response in hypocotyl explants. CK modulates auxin-induced organogenesis via regulation of intercellular auxin distribution. The auxin-induced organogenesis is accompanied with endogenous CKs production and tissue-specific activation of CK signalling. CK also reduces auxin efflux from cultured tobacco cells and regulates the expression of auxin efflux carriers from the PIN family in hypocotyl explants and are necessary to maintain intercellular auxin distribution in planta. We propose a model, in which auxin acts as a trigger of the organogenic processes, whose output is modulated by the endogenously produced CKs via regulation of expression of auxin efflux carriers.

Název v anglickém jazyce

Cytokinins modulate auxin-induced organogenesis via regulation of the auxin efflux

Popis výsledku anglicky

Auxin and cytokinin (CK) are important regulators of the developmental fate of pluripotent plant cells. The molecular mechanism of their interaction in control of plant organogenesis is largely unknown. We show that auxin, but not CK, is able to induce organogenic response in hypocotyl explants. CK modulates auxin-induced organogenesis via regulation of intercellular auxin distribution. The auxin-induced organogenesis is accompanied with endogenous CKs production and tissue-specific activation of CK signalling. CK also reduces auxin efflux from cultured tobacco cells and regulates the expression of auxin efflux carriers from the PIN family in hypocotyl explants and are necessary to maintain intercellular auxin distribution in planta. We propose a model, in which auxin acts as a trigger of the organogenic processes, whose output is modulated by the endogenously produced CKs via regulation of expression of auxin efflux carriers.

Druh

O - Ostatní výsledky

CEP obor

EB - Genetika a molekulární biologie

OECD FORD obor

—

Projekt

<a href="/cs/project/LC06034" target="_blank" >LC06034: Regulace morfogeneze rostlinných buněk a orgánů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2009

Kód důvěrnosti údajů

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