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Statements

Subject Item
n2:RIV%2F61389030%3A_____%2F10%3A00359299%21RIV11-GA0-61389030
rdf:type
skos:Concept n16:Vysledek
dcterms:description
A multistep two-component signaling system is established as a key element of cytokinin (CK) signaling in Arabidopsis. AHK2 and AHK3 were found to be primarily involved in mediating cold to express A-type ARRs despite CK deficiency. Cold neither significantly induced AHK2 and AHK3 expression nor altered the CK contents of wild type within the 4 h during which the A-type ARRgenes exhibited peak expression in response to cold, indicating that cold might induce ARR expression via the AHK2 and AHK3 proteins. The overexpression of the cold-inducible ARR7 in Arabidopsis resulted in a hypersensitivity response to freezing temperatures under cold acclimated conditions. The ahk2 ahk3 and arr7 mutants showed hypersensitive response to abscisic acid (ABA) for germination. These results suggest that AHK2 and AHK3 and the cold-inducible A-type ARRs play a negative regulatory role in cold stress signaling via inhibition of ABA response, occurring independently of the cold acclimation pathway. A multistep two-component signaling system is established as a key element of cytokinin (CK) signaling in Arabidopsis. AHK2 and AHK3 were found to be primarily involved in mediating cold to express A-type ARRs despite CK deficiency. Cold neither significantly induced AHK2 and AHK3 expression nor altered the CK contents of wild type within the 4 h during which the A-type ARRgenes exhibited peak expression in response to cold, indicating that cold might induce ARR expression via the AHK2 and AHK3 proteins. The overexpression of the cold-inducible ARR7 in Arabidopsis resulted in a hypersensitivity response to freezing temperatures under cold acclimated conditions. The ahk2 ahk3 and arr7 mutants showed hypersensitive response to abscisic acid (ABA) for germination. These results suggest that AHK2 and AHK3 and the cold-inducible A-type ARRs play a negative regulatory role in cold stress signaling via inhibition of ABA response, occurring independently of the cold acclimation pathway.
dcterms:title
A subset of cytokinin two-component signaling system plays a role in cold temperature stress response in Arabidopsis A subset of cytokinin two-component signaling system plays a role in cold temperature stress response in Arabidopsis
skos:prefLabel
A subset of cytokinin two-component signaling system plays a role in cold temperature stress response in Arabidopsis A subset of cytokinin two-component signaling system plays a role in cold temperature stress response in Arabidopsis
skos:notation
RIV/61389030:_____/10:00359299!RIV11-GA0-61389030
n3:aktivita
n9:P n9:Z
n3:aktivity
P(GA301/08/1649), Z(AV0Z50380511), Z(MSM6198959216)
n3:cisloPeriodika
30
n3:dodaniDat
n14:2011
n3:domaciTvurceVysledku
n8:3686957 n8:4712048
n3:druhVysledku
n4:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
245005
n3:idVysledku
RIV/61389030:_____/10:00359299
n3:jazykVysledku
n12:eng
n3:klicovaSlova
Histidine kinase; Gene-expression; Negative regulator
n3:klicoveSlovo
n6:Histidine%20kinase n6:Gene-expression n6:Negative%20regulator
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[33040A118F20]
n3:nazevZdroje
Journal of Biological Chemistry
n3:obor
n13:EF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
11
n3:projekt
n15:GA301%2F08%2F1649
n3:rokUplatneniVysledku
n14:2010
n3:svazekPeriodika
285
n3:tvurceVysledku
Kim, S. Ku, S. J. Jeon, J. Novák, Ondřej Kang, N. Y. Kim, N. Y. Kim, J. Cho, D. J. Lee, E. J. Strnad, Miroslav Lee, D. J.
n3:wos
000279999900070
n3:zamer
n7:AV0Z50380511 n7:MSM6198959216
s:issn
0021-9258
s:numberOfPages
16