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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F09%3A00043637%21RIV11-MSM-14310___
rdf:type
skos:Concept n11:Vysledek
dcterms:description
Auxin and cytokinins are principal regulators of the developmental fate of pluripotent plant cells. The molecular nature of their interaction during de novo organogenesis remains unclear. We used the hypocotyl explants-based in vitro system to study mechanisms underlying de novo organogenesis. We show that auxin, but not cytokinin, is able to induce organogenic response. Cytokinin modulates auxin-induced organogenesis (AIO) via regulation of intercellular auxin distribution. The AIO is accompanied with endogenous cytokinins production and tissue-specific activation of cytokinin signalling. Cytokinin regulates the expression of PIN auxin efflux carriers in hypocotyl explants. We analyzed PINs expression in roots of 6-day-old seedlings and found that PIN2 and PIN4 are downregulated in Pro35S:AtCKX2(3) lines. We propose a model in which auxin acts as a trigger of the organogenic processes, whose output is modulated by the endogenously produced CKs. Auxin and cytokinins are principal regulators of the developmental fate of pluripotent plant cells. The molecular nature of their interaction during de novo organogenesis remains unclear. We used the hypocotyl explants-based in vitro system to study mechanisms underlying de novo organogenesis. We show that auxin, but not cytokinin, is able to induce organogenic response. Cytokinin modulates auxin-induced organogenesis (AIO) via regulation of intercellular auxin distribution. The AIO is accompanied with endogenous cytokinins production and tissue-specific activation of cytokinin signalling. Cytokinin regulates the expression of PIN auxin efflux carriers in hypocotyl explants. We analyzed PINs expression in roots of 6-day-old seedlings and found that PIN2 and PIN4 are downregulated in Pro35S:AtCKX2(3) lines. We propose a model in which auxin acts as a trigger of the organogenic processes, whose output is modulated by the endogenously produced CKs.
dcterms:title
Cytokinins modulate auxin-induced organogenesis via regulation of the auxin efflux in Arabidopsis thaliana. Cytokinins modulate auxin-induced organogenesis via regulation of the auxin efflux in Arabidopsis thaliana.
skos:prefLabel
Cytokinins modulate auxin-induced organogenesis via regulation of the auxin efflux in Arabidopsis thaliana. Cytokinins modulate auxin-induced organogenesis via regulation of the auxin efflux in Arabidopsis thaliana.
skos:notation
RIV/00216224:14310/09:00043637!RIV11-MSM-14310___
n4:aktivita
n7:S n7:P n7:Z
n4:aktivity
P(LC06034), S, Z(MSM0021622415)
n4:dodaniDat
n13:2011
n4:domaciTvurceVysledku
n5:8935483 n5:3730832 n5:2797607 n5:3807703 n5:9205462 n5:4390644 n5:2461773 n5:2027178 n5:9683887 n5:6662072
n4:druhVysledku
n16:O
n4:duvernostUdaju
n12:S
n4:entitaPredkladatele
n15:predkladatel
n4:idSjednocenehoVysledku
308826
n4:idVysledku
RIV/00216224:14310/09:00043637
n4:jazykVysledku
n10:eng
n4:klicovaSlova
auxin-induced organogenesis; auxin transport; auxin efflux carrier
n4:klicoveSlovo
n9:auxin%20efflux%20carrier n9:auxin-induced%20organogenesis n9:auxin%20transport
n4:kontrolniKodProRIV
[45275F9C4B06]
n4:obor
n17:EB
n4:pocetDomacichTvurcuVysledku
10
n4:pocetTvurcuVysledku
12
n4:projekt
n6:LC06034
n4:rokUplatneniVysledku
n13:2009
n4:tvurceVysledku
Klíma, Petr Hoyerová, Klára Pernisová, Markéta Reichman, Pavel Hejátko, Jan Válková, Martina Horák, Jakub Friml, Jiří Dubová, Jaroslava Malbeck, Jiří Souček, Přemysl Zažímalová, Eva
n4:zamer
n18:MSM0021622415
n14:organizacniJednotka
14310