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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F13%3A33148260%21RIV14-AV0-15310___
rdf:type
n7:Vysledek skos:Concept
rdfs:seeAlso
http://jxb.oxfordjournals.org/content/64/2/613
dcterms:description
Upward leaf movement, called hyponastic growth, is employed by plants to cope with adverse environmental conditions. Ethylene is a key regulator of this process and, in Arabidopsis thaliana, hyponasty is induced by this phytohormone via promotion of epidermal cell expansion in a proximal zone of the abaxial side of the petiole. ROTUNDIFOLIA3/CYP90C1 encodes an enzyme which was shown to catalyse C-23 hydroxylation of several brassinosteroids (BRs) phytohormones involved in, for example, organ growth, cell expansion, cell division, and responses to abiotic and biotic stresses. This study tested the interaction between ethylene and BRs in regulating hyponastic growth. A mutant isolated in a forward genetic screen, with reduced hyponastic response to ethylene treatment, was allelic to rot3. The cause of the reduced hyponastic growth in this mutant was examined by studying ethyleneBR interaction during local cell expansion, pharmacological inhibition of BR synthesis and ethylene effects on transcription of BR-related genes. This work demonstrates that rot3 mutants are impaired in local cell expansion driving hyponasty. Moreover, the inhibition of BR biosynthesis reduces ethylene-induced hyponastic growth and ethylene increases sensitivity to BR in promoting cell elongation in Arabidopsis hypocotyls. Together, the results show that ROT3 modulates ethylene-induced petiole movement and that this function is likely BR related Upward leaf movement, called hyponastic growth, is employed by plants to cope with adverse environmental conditions. Ethylene is a key regulator of this process and, in Arabidopsis thaliana, hyponasty is induced by this phytohormone via promotion of epidermal cell expansion in a proximal zone of the abaxial side of the petiole. ROTUNDIFOLIA3/CYP90C1 encodes an enzyme which was shown to catalyse C-23 hydroxylation of several brassinosteroids (BRs) phytohormones involved in, for example, organ growth, cell expansion, cell division, and responses to abiotic and biotic stresses. This study tested the interaction between ethylene and BRs in regulating hyponastic growth. A mutant isolated in a forward genetic screen, with reduced hyponastic response to ethylene treatment, was allelic to rot3. The cause of the reduced hyponastic growth in this mutant was examined by studying ethyleneBR interaction during local cell expansion, pharmacological inhibition of BR synthesis and ethylene effects on transcription of BR-related genes. This work demonstrates that rot3 mutants are impaired in local cell expansion driving hyponasty. Moreover, the inhibition of BR biosynthesis reduces ethylene-induced hyponastic growth and ethylene increases sensitivity to BR in promoting cell elongation in Arabidopsis hypocotyls. Together, the results show that ROT3 modulates ethylene-induced petiole movement and that this function is likely BR related
dcterms:title
Ethylene promotes hyponastic growth through interaction with ROTUNDIFOLIA3/CYP90C1 in Arabidopsis Ethylene promotes hyponastic growth through interaction with ROTUNDIFOLIA3/CYP90C1 in Arabidopsis
skos:prefLabel
Ethylene promotes hyponastic growth through interaction with ROTUNDIFOLIA3/CYP90C1 in Arabidopsis Ethylene promotes hyponastic growth through interaction with ROTUNDIFOLIA3/CYP90C1 in Arabidopsis
skos:notation
RIV/61989592:15310/13:33148260!RIV14-AV0-15310___
n7:predkladatel
n8:orjk%3A15310
n3:aktivita
n9:Z n9:P
n3:aktivity
P(ED0007/01/01), P(IAA400550801), Z(AV0Z50380511)
n3:cisloPeriodika
2
n3:dodaniDat
n4:2014
n3:domaciTvurceVysledku
n21:4712048 n21:3252434
n3:druhVysledku
n18:J
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n22:predkladatel
n3:idSjednocenehoVysledku
73344
n3:idVysledku
RIV/61989592:15310/13:33148260
n3:jazykVysledku
n17:eng
n3:klicovaSlova
ROTUNDIFOLIA3; hyponasty; ethylene; cell expansion; brassinosteroids; Arabidopsis
n3:klicoveSlovo
n10:brassinosteroids n10:Arabidopsis n10:ethylene n10:cell%20expansion n10:hyponasty n10:ROTUNDIFOLIA3
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[191C221134F3]
n3:nazevZdroje
Journal of Experimental Botany
n3:obor
n13:EF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
7
n3:projekt
n5:ED0007%2F01%2F01 n5:IAA400550801
n3:rokUplatneniVysledku
n4:2013
n3:svazekPeriodika
64
n3:tvurceVysledku
Van Zanten, Martijn Peeters, Anton J M Voesenek, Laurentius A C J Tarkowská, Danuše Polko, Joanna K Pierik, Ronald Strnad, Miroslav
n3:wos
000313618900019
n3:zamer
n14:AV0Z50380511
s:issn
0022-0957
s:numberOfPages
12
n19:doi
10.1093/jxb/ers356
n20:organizacniJednotka
15310