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Statements

Subject Item
n2:RIV%2F00216224%3A14740%2F13%3A00075044%21RIV15-MSM-14740___
rdf:type
skos:Concept n17:Vysledek
rdfs:seeAlso
http://www.pnas.org/content/110/9/3627
dcterms:description
Gravitropic bending of plant organs is mediated by an asymmetric signaling of the plant hormone auxin between the upper and lower side of the respective organ. Here, we show that also another plant hormone, gibberellie acid (GA), shows asymmetric action during gravitropic responses. lmmunodetection using an antibody against GA and monitoring GA signaling output by downstream degradation of DELLA proteins revealed an asymmetric GA distribution and response with the maximum at the lower side of gravistimulated roots. Genetic or pharmacological manipulation of GA levels or response affects gravity-mediated auxin redistribution and root bending response. The higher GA levels at the lower side of the root correlate with increased amounts of PIN-FORMED2 (PIN2) auxin transporter at the plasma membrane. The observed increase in PIN2 stability is caused by a specific GA effect on trafficking of PIN proteins to lytic vacuoles that presumably occurs downstream of brefeldin A-sensitive endosomes. Gravitropic bending of plant organs is mediated by an asymmetric signaling of the plant hormone auxin between the upper and lower side of the respective organ. Here, we show that also another plant hormone, gibberellie acid (GA), shows asymmetric action during gravitropic responses. lmmunodetection using an antibody against GA and monitoring GA signaling output by downstream degradation of DELLA proteins revealed an asymmetric GA distribution and response with the maximum at the lower side of gravistimulated roots. Genetic or pharmacological manipulation of GA levels or response affects gravity-mediated auxin redistribution and root bending response. The higher GA levels at the lower side of the root correlate with increased amounts of PIN-FORMED2 (PIN2) auxin transporter at the plasma membrane. The observed increase in PIN2 stability is caused by a specific GA effect on trafficking of PIN proteins to lytic vacuoles that presumably occurs downstream of brefeldin A-sensitive endosomes.
dcterms:title
Asymmetric gibberellin signaling regulates vacuolar trafficking of PIN auxin transporters during root gravitropism Asymmetric gibberellin signaling regulates vacuolar trafficking of PIN auxin transporters during root gravitropism
skos:prefLabel
Asymmetric gibberellin signaling regulates vacuolar trafficking of PIN auxin transporters during root gravitropism Asymmetric gibberellin signaling regulates vacuolar trafficking of PIN auxin transporters during root gravitropism
skos:notation
RIV/00216224:14740/13:00075044!RIV15-MSM-14740___
n3:aktivita
n9:P
n3:aktivity
P(ED1.1.00/02.0068), P(EE2.3.30.0009)
n3:cisloPeriodika
9
n3:dodaniDat
n14:2015
n3:domaciTvurceVysledku
n12:3730832 Zwiewka, Marta
n3:druhVysledku
n10:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
62385
n3:idVysledku
RIV/00216224:14740/13:00075044
n3:jazykVysledku
n20:eng
n3:klicovaSlova
hormone cross-talk; protein stability; protein trafficking
n3:klicoveSlovo
n7:protein%20stability n7:protein%20trafficking n7:hormone%20cross-talk
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[400DD2B1167D]
n3:nazevZdroje
Proc. Natl. Acad. Sci. U. S. A.
n3:obor
n5:EB
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
6
n3:projekt
n4:ED1.1.00%2F02.0068 n4:EE2.3.30.0009
n3:rokUplatneniVysledku
n14:2013
n3:svazekPeriodika
110
n3:tvurceVysledku
Teichmann, Thomas Van Montagu, Marc C E Friml, Jiří Heilmann, Ingo Loefke, Christian Zwiewka, Marta
n3:wos
000315841900083
s:issn
0027-8424
s:numberOfPages
6
n16:doi
10.1073/pnas.1300107110
n13:organizacniJednotka
14740