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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F09%3A00039832" target="_blank" >RIV/00216224:14310/09:00039832 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/09:00039833
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Cytokinins modulate auxin-induced organogenesis in plants via regulation of the auxin efflux
Original language description
Cytokinins (CKs) and auxins were shown to be the principal regulators of plant organogenesis. However, the molecular mechanisms of the auxin/CKs interaction are still largely unknown. Here we show that auxin is able to induce organogenic response in hypocotyl explants, while CK modulates the auxin-induced organogenesis via regulation of intercellular auxin distribution. De novo organogenesis is accompanied with production of endogenous CKs and tissue-specific activation of CK signalling. CKs reduce auxin efflux from tobacco cells and regulate the expression of auxin efflux carriers from the PIN family. Finally, endogenous CKs are necessary to maintain proper auxin distribution and PINs expression in Arabidopsis roots. We propose a model, in which auxinacts as a trigger of the organogenic processes, whose output is modulated by the endogenously produced CKs via regulation of expression of auxin efflux carriers.
Czech name
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Czech description
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Project
<a href="/en/project/LC06034" target="_blank" >LC06034: Regulation of morphogenesis of plant cells and organs</a><br>
Continuities
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

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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