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Status: Bibliographieeintrag

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Verfasst von:Höll, Janine [VerfasserIn]   i
 Mehlhorn, Sonja [VerfasserIn]   i
 Walter, Hannah [VerfasserIn]   i
 Poschet, Gernot [VerfasserIn]   i
 Ziegler, Tobias [VerfasserIn]   i
 Hell, Rüdiger [VerfasserIn]   i
 Bogs, Jochen [VerfasserIn]   i
 Rausch, Thomas [VerfasserIn]   i
 Pfleger, Sina [VerfasserIn]   i
Titel:Impact of pulsed UV-B stress exposure on plant performance
Titelzusatz:how recovery periods stimulate secondary metabolism while reducing adaptive growth attenuation
Verf.angabe:Janine Höll, Sonja Lindner, Hannah Walter, Drishti Joshi, Gernot Poschet, Sina Pfleger, Tobias Ziegler, Rüdiger Hell, Jochen Bogs, Thomas Rausch
Jahr:2019
Umfang:14 S.
Teil:volume:42
 year:2019
 number:3
 pages:801-814
 extent:14
Fussnoten:First published: 26 July 2018 ; Gesehen am 03.09.2019
Titel Quelle:Enthalten in: Plant, cell & environment
Ort Quelle:Oxford [u.a.] : Wiley-Blackwell, 1978
Jahr Quelle:2019
Band/Heft Quelle:42(2019), 3, Seite 801-814
ISSN Quelle:1365-3040
Abstract:Upon continuous stress exposure, plants display attenuated metabolic stress responses due to regulatory feedback loops. Here, we have tested the hypothesis that pulsed stress exposure with intervening recovery periods should affect these feedback loops, thereby causing increased accumulation of stress-induced metabolites. The response of Arabidopsis plantlets to continuous UV-B exposure (Cuv) was compared with that of pulsed UV-B exposure (Puv). The differential responses to Puv versus Cuv were monitored at the level of gene expression and metabolite accumulation, using wild type (WT) and different mutant lines. In comparison with Cuv, Puv increased sinapyl and flavonol (S + F) content, whereas adaptive growth attenuation was reduced. Furthermore, in a myb4 mutant (AtMYB4, repressor-type R2R3-MYB transcription factor), the S + F content was increased only for Cuv, but not beyond the level for Puv observed in WT. These observations and the ability of AtMYB4 to repress AtMYB12/AtMYB111-mediated activation of target gene promoters (pCHS and pFLS) indicate that the increase of S + F content after Puv observed in WT plants results from reduced feedback inhibition by AtMYB4. The results support the notion that stress-induced metabolic changes not necessarily cause a growth penalty. Furthermore, the observed Puv-induced increase in flavonol accumulation may stimulate reevaluation of commercial plant production practices.
DOI:doi:10.1111/pce.13409
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1111/pce.13409
 Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1111/pce.13409
 DOI: https://doi.org/10.1111/pce.13409
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:flavonol accumulation
 growth attenuation
 recovery periods
 temporal stress pattern
 UV-B exposure
 UV-B signalling
K10plus-PPN:1675683506
Verknüpfungen:→ Zeitschrift

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