A subset of cytokinin two-component signaling system plays a role in cold temperature stress response in Arabidopsis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F10%3A10213432" target="_blank" >RIV/61989592:15310/10:10213432 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389030:_____/10:00359299

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A subset of cytokinin two-component signaling system plays a role in cold temperature stress response in Arabidopsis

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

A subset of cytokinin two-component signaling system plays a role in cold temperature stress response in Arabidopsis

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

<a href="/cs/project/GA301%2F08%2F1649" target="_blank" >GA301/08/1649: Modulace buněčného dělení normálních a nádorových buněk inhibitory cyklin-dependentních kinas</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Biological Chemistry

ISSN

0021-9258

e-ISSN

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Svazek periodika

285

Číslo periodika v rámci svazku

30

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

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Kód UT WoS článku

000279999900070

EID výsledku v databázi Scopus

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