dc.contributor.author
Frank, Manuel
dc.contributor.author
Cortleven, Anne
dc.contributor.author
Pěnčík, Aleš
dc.contributor.author
Novak, Ondrej
dc.contributor.author
Schmülling, Thomas
dc.date.accessioned
2022-05-12T11:32:04Z
dc.date.available
2022-05-12T11:32:04Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/34999
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-34715
dc.description.abstract
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-function YUCCA 1 (YUC1) mutant, yuc1D, displayed an increased photoperiod stress sensitivity. In contrast, a loss of the auxin receptors TRANSPORT-INHIBITOR-RESISTANT 1 (TIR1), AUXIN SIGNALING 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.
en
dc.format.extent
15 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Arabidopsis thaliana
en
dc.subject
abiotic stress
en
dc.subject
photoperiod stress
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie
dc.subject.ddc
500 Naturwissenschaften und Mathematik::580 Pflanzen (Botanik)::580 Pflanzen (Botanik)
dc.title
The Photoperiod Stress Response in Arabidopsis thaliana Depends on Auxin Acting as an Antagonist to the Protectant Cytokinin
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
2936
dcterms.bibliographicCitation.doi
10.3390/ijms23062936
dcterms.bibliographicCitation.journaltitle
International Journal of Molecular Sciences
dcterms.bibliographicCitation.number
6
dcterms.bibliographicCitation.originalpublishername
MDPI
dcterms.bibliographicCitation.volume
23
dcterms.bibliographicCitation.url
https://doi.org/10.3390/ijms23062936
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation.other
Institut für Biologie / Arbeitsbereich Genetik

refubium.note.author
Die Publikation wurde aus Open Access Publikationsgeldern der Freien Universität Berlin gefördert.
de
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1422-0067