The Photoperiod Stress Response in Arabidopsis thaliana Depends on Auxin Acting as an Antagonist to the Protectant Cytokinin

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F22%3A00561233" target="_blank" >RIV/61389030:_____/22:00561233 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/22:73616455

Výsledek na webu

<a href="https://doi.org/10.3390/ijms23062936" target="_blank" >https://doi.org/10.3390/ijms23062936</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ijms23062936" target="_blank" >10.3390/ijms23062936</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Photoperiod Stress Response in Arabidopsis thaliana Depends on Auxin Acting as an Antagonist to the Protectant Cytokinin

Popis výsledku v původním jazyce

Fluctuating environmental conditions trigger adaptive responses in plants, which are regulated by phytohormones. During photoperiod stress caused by a prolongation of the light period, cytokinin (CK) has a protective function. Auxin often acts as an antagonist of CK in developmental processes and stress responses. Here, we investigated the regulation of the photoperiod stress response in Arabidopsis thaliana by auxin and its interaction with CK. Transcriptome analysis revealed an altered transcript abundance of numerous auxin metabolism and signaling genes after photoperiod stress treatment. The changes appeared earlier and were stronger in the photoperiod‐stress-sensitive CK receptor mutant arabidopsis histidine kinase 2 (ahk2),3 compared to wild‐type plants. The concentrations of indole‐3‐acetic acid (IAA), IAA‐Glc and IAA‐Asp increased in both genotypes, but the increases were more pronounced in ahk2,3. Genetic analysis revealed that the gain‐of‐func-tion YUCCA 1 (YUC1) mutant, yuc1D, displayed an increased photoperiod stress sensitivity. In con-trast, a loss of the auxin receptors TRANSPORT‐INHIBITOR‐RESISTANT 1 (TIR1), AUXIN SIG‐ NALING F‐BOX 2 (AFB2) and AFB3 in wild‐type and ahk2,3 background caused a reduced photoperiod stress response. Overall, this study revealed that auxin promotes response to photoperiod stress antagonizing the protective CK.

Název v anglickém jazyce

The Photoperiod Stress Response in Arabidopsis thaliana Depends on Auxin Acting as an Antagonist to the Protectant Cytokinin

Popis výsledku anglicky

Fluctuating environmental conditions trigger adaptive responses in plants, which are regulated by phytohormones. During photoperiod stress caused by a prolongation of the light period, cytokinin (CK) has a protective function. Auxin often acts as an antagonist of CK in developmental processes and stress responses. Here, we investigated the regulation of the photoperiod stress response in Arabidopsis thaliana by auxin and its interaction with CK. Transcriptome analysis revealed an altered transcript abundance of numerous auxin metabolism and signaling genes after photoperiod stress treatment. The changes appeared earlier and were stronger in the photoperiod‐stress-sensitive CK receptor mutant arabidopsis histidine kinase 2 (ahk2),3 compared to wild‐type plants. The concentrations of indole‐3‐acetic acid (IAA), IAA‐Glc and IAA‐Asp increased in both genotypes, but the increases were more pronounced in ahk2,3. Genetic analysis revealed that the gain‐of‐func-tion YUCCA 1 (YUC1) mutant, yuc1D, displayed an increased photoperiod stress sensitivity. In con-trast, a loss of the auxin receptors TRANSPORT‐INHIBITOR‐RESISTANT 1 (TIR1), AUXIN SIG‐ NALING F‐BOX 2 (AFB2) and AFB3 in wild‐type and ahk2,3 background caused a reduced photoperiod stress response. Overall, this study revealed that auxin promotes response to photoperiod stress antagonizing the protective CK.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10608 - Biochemistry and molecular biology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

International Journal of Molecular Sciences

ISSN

1422-0067

e-ISSN

1422-0067

Svazek periodika

23

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

2936

Kód UT WoS článku

000775293100001

EID výsledku v databázi Scopus

2-s2.0-85126065448