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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F06%3A00018261%21RIV10-MSM-14310___
rdf:type
skos:Concept n14:Vysledek
dcterms:description
Plant development is characterized by a profound ability to regenerate and form tissues with new axes of polarity. An unsolved question concerns how the position within a tissue and cues from neighbouring cells are integrated to specify the polarity of individual cells. The canalization hypothesis proposes a feed-back effect of the phytohormone auxin on the directionality of intercellular auxin flow as a means to polarize tissues. Here we identify a cellular and molecular mechanism for canalization. Local auxin application, wounding or auxin accumulation during de novo organ formation lead to rearrangements in the subcellular polar localization of PIN auxin transport components. This auxin effect on PIN polarity is cellspecific, does not depend on PIN transcription and involves the Aux/IAA-ARF signalling pathway. Our data suggest that auxin acts as polarizing cue which links individual cell polarity with tissue and organ polarity through control of PIN polar targeting. Plant development is characterized by a profound ability to regenerate and form tissues with new axes of polarity. An unsolved question concerns how the position within a tissue and cues from neighbouring cells are integrated to specify the polarity of individual cells. The canalization hypothesis proposes a feed-back effect of the phytohormone auxin on the directionality of intercellular auxin flow as a means to polarize tissues. Here we identify a cellular and molecular mechanism for canalization. Local auxin application, wounding or auxin accumulation during de novo organ formation lead to rearrangements in the subcellular polar localization of PIN auxin transport components. This auxin effect on PIN polarity is cellspecific, does not depend on PIN transcription and involves the Aux/IAA-ARF signalling pathway. Our data suggest that auxin acts as polarizing cue which links individual cell polarity with tissue and organ polarity through control of PIN polar targeting.
dcterms:title
Canalization of auxin flow by Aux/IAA-ARF-dependent feed-back regulation of PIN polarity Canalization of auxin flow by Aux/IAA-ARF-dependent feed-back regulation of PIN polarity
skos:prefLabel
Canalization of auxin flow by Aux/IAA-ARF-dependent feed-back regulation of PIN polarity Canalization of auxin flow by Aux/IAA-ARF-dependent feed-back regulation of PIN polarity
skos:notation
RIV/00216224:14310/06:00018261!RIV10-MSM-14310___
n3:aktivita
n8:Z n8:P
n3:aktivity
P(GP522/02/D137), P(LC06034), Z(MSM 432100001), Z(MSM0021622415)
n3:cisloPeriodika
20
n3:dodaniDat
n5:2010
n3:domaciTvurceVysledku
n18:3730832
n3:druhVysledku
n17:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
467690
n3:idVysledku
RIV/00216224:14310/06:00018261
n3:jazykVysledku
n13:eng
n3:klicovaSlova
Auxin signaling; auxin transport; cell and tissue polarity; lateral root development; phyllotaxis; vasculature development
n3:klicoveSlovo
n6:vasculature%20development n6:lateral%20root%20development n6:auxin%20transport n6:phyllotaxis n6:Auxin%20signaling n6:cell%20and%20tissue%20polarity
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[6A166A150AB7]
n3:nazevZdroje
Genes & Development
n3:obor
n15:EB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
7
n3:projekt
n4:LC06034 n4:GP522%2F02%2FD137
n3:rokUplatneniVysledku
n5:2006
n3:svazekPeriodika
20
n3:tvurceVysledku
Luschnig, Christian Benková, Eva Sauer, Michael Wišniewska, Marie Reinöhl, Vilém Balla, Jozef Friml, Jiří
n3:zamer
n10:MSM0021622415 n10:MSM%20432100001
s:issn
0890-9369
s:numberOfPages
10
n12:organizacniJednotka
14310