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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F12%3A33142896%21RIV13-MSM-15310___
rdf:type
n12:Vysledek skos:Concept
rdfs:seeAlso
http://link.springer.com/article/10.1007%2Fs10725-012-9719-x
dcterms:description
Previous research in maize suggested a possible involvement of auxin-binding proteins (ABPs) in light signaling during maize seedling development. To obtain more information about the interaction of auxin and light signaling, we investigated the gene expression of phytochrome B (PHYB) and phytochrome A (PHYA) in loss-of-function mutants in ABP1 and ABP4 genes in maize (Zea mays L.). We studied how expression of the PHYB and PHYA genes in mesocotyl is regulated by white light (WL), and whether exogenous auxin NAA influences the expression of the phytochrome genes. We found that knockout of ABP1 or ABP4 results in essentially reduced expression of PHYB gene in dark-grown mesocotyl. WL reduced PHYB expression in WT but not in the ABPs knockout seedlings. The data indicate that ABP1 and ABP4 are positively involved in PHYB expression in etiolated mesocotyl. Our results also indicate that in etiolated mesocotyl, ABP1 and ABP4 mediate the inhibitory effect of exogenous auxin on level of PHYB transcript. In contrast, in our experimental conditions, WL does not reduce expression of PHYA. Our results further suggest that ABP1 and ABP4 are not likely involved in the expression of PHYA gene and neither in auxin-induced suppression of PHYA transcript accumulation. Our results support the existence of cross-talk between auxin and light signaling and indicate for the first time that ABP1, ABP4 and PHYB genes could share common signaling pathway(s). Previous research in maize suggested a possible involvement of auxin-binding proteins (ABPs) in light signaling during maize seedling development. To obtain more information about the interaction of auxin and light signaling, we investigated the gene expression of phytochrome B (PHYB) and phytochrome A (PHYA) in loss-of-function mutants in ABP1 and ABP4 genes in maize (Zea mays L.). We studied how expression of the PHYB and PHYA genes in mesocotyl is regulated by white light (WL), and whether exogenous auxin NAA influences the expression of the phytochrome genes. We found that knockout of ABP1 or ABP4 results in essentially reduced expression of PHYB gene in dark-grown mesocotyl. WL reduced PHYB expression in WT but not in the ABPs knockout seedlings. The data indicate that ABP1 and ABP4 are positively involved in PHYB expression in etiolated mesocotyl. Our results also indicate that in etiolated mesocotyl, ABP1 and ABP4 mediate the inhibitory effect of exogenous auxin on level of PHYB transcript. In contrast, in our experimental conditions, WL does not reduce expression of PHYA. Our results further suggest that ABP1 and ABP4 are not likely involved in the expression of PHYA gene and neither in auxin-induced suppression of PHYA transcript accumulation. Our results support the existence of cross-talk between auxin and light signaling and indicate for the first time that ABP1, ABP4 and PHYB genes could share common signaling pathway(s).
dcterms:title
Auxin binding proteins ABP1 and ABP4 are involved in the light- and auxin-induced down-regulation of phytochrome gene PHYB in maize (Zea mays L.) mesocotyl Auxin binding proteins ABP1 and ABP4 are involved in the light- and auxin-induced down-regulation of phytochrome gene PHYB in maize (Zea mays L.) mesocotyl
skos:prefLabel
Auxin binding proteins ABP1 and ABP4 are involved in the light- and auxin-induced down-regulation of phytochrome gene PHYB in maize (Zea mays L.) mesocotyl Auxin binding proteins ABP1 and ABP4 are involved in the light- and auxin-induced down-regulation of phytochrome gene PHYB in maize (Zea mays L.) mesocotyl
skos:notation
RIV/61989592:15310/12:33142896!RIV13-MSM-15310___
n12:predkladatel
n15:orjk%3A15310
n3:aktivita
n14:Z n14:N n14:P
n3:aktivity
N, P(1P05ME792), Z(AV0Z50380511)
n3:cisloPeriodika
3
n3:dodaniDat
n8:2013
n3:domaciTvurceVysledku
n10:5876796 n10:1152661
n3:druhVysledku
n20:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
124298
n3:idVysledku
RIV/61989592:15310/12:33142896
n3:jazykVysledku
n22:eng
n3:klicovaSlova
Zea mays; PHYB; PHYA; Mesocotyl; Gene expression; ABP4; ABP1; Auxin binding protein
n3:klicoveSlovo
n5:PHYA n5:PHYB n5:Gene%20expression n5:Mesocotyl n5:ABP1 n5:ABP4 n5:Auxin%20binding%20protein n5:Zea%20mays
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[59159318B4BB]
n3:nazevZdroje
Plant Growth Regulation
n3:obor
n18:EF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n9:1P05ME792
n3:rokUplatneniVysledku
n8:2012
n3:svazekPeriodika
68
n3:tvurceVysledku
Bořucká, Jana Fellner, Martin
n3:wos
000310969900018
n3:zamer
n4:AV0Z50380511
s:issn
0167-6903
s:numberOfPages
7
n11:doi
10.1007/s10725-012-9719-x
n6:organizacniJednotka
15310