R
Roman Ulm
Researcher at University of Geneva
Publications - 59
Citations - 7150
Roman Ulm is an academic researcher from University of Geneva. The author has contributed to research in topics: UVR8 & Arabidopsis. The author has an hindex of 34, co-authored 57 publications receiving 6038 citations. Previous affiliations of Roman Ulm include Friedrich Miescher Institute for Biomedical Research & University of Freiburg.
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Journal ArticleDOI
Perception of UV-B by the arabidopsis UVR8 protein
Luca Rizzini,Jean Jacques Favory,Catherine Cloix,Davide Faggionato,Andrew O'Hara,Eirini Kaiserli,Ralf Baumeister,Eberhard Schäfer,Ferenc Nagy,Ferenc Nagy,Gareth I. Jenkins,Roman Ulm,Roman Ulm +12 more
TL;DR: It is shown that dimers of the UVR8 protein perceive UV-B, probably by a tryptophan-based mechanism, which mediatesUV-B photomorphogenic responses securing plant acclimation and thus promotes survival in sunlight.
Journal ArticleDOI
Interaction of COP1 and UVR8 regulates UV-B-induced photomorphogenesis and stress acclimation in Arabidopsis
Jean-Jacques Favory,Agnieszka Stec,Henriette Gruber,Luca Rizzini,Attila Oravecz,Markus Funk,Andreas Albert,Catherine Cloix,Gareth I. Jenkins,Edward J. Oakeley,Harald K. Seidlitz,Ferenc Nagy,Ferenc Nagy,Roman Ulm +13 more
TL;DR: It is suggested that UV‐B‐specific interaction of COP1 and UVR8 in the nucleus is a very early step in signalling and responsible for the plant's coordinated response toUV‐B ensuring UV‐ B acclimation and protection in the natural environment.
Journal ArticleDOI
Genome-wide analysis of gene expression reveals function of the bZIP transcription factor HY5 in the UV-B response of Arabidopsis.
Roman Ulm,Alexander Baumann,Attila Oravecz,Zoltán Máté,Éva Ádám,Edward J. Oakeley,Eberhard Schäfer,Ferenc Nagy,Ferenc Nagy +8 more
TL;DR: This work monitors the gene expression profile of UV-B-irradiated seedlings by using high-density oligonucleotide microarrays and demonstrates that the bZIP transcription factor HY5 is required for UV- B-mediated regulation of a subset of genes.
Journal ArticleDOI
The Arabidopsis bZIP transcription factor HY5 regulates expression of the; PFG1/MYB12; gene in response to light and ultraviolet-B radiation
Ralf Stracke,Jean-Jacques Favory,Henriette Gruber,Lutz Bartelniewoehner,Sebastian Bartels,Melanie Binkert,Markus Funk,Bernd Weisshaar,Roman Ulm +8 more
TL;DR: The data suggest that HY5-dependent regulation of PFG gene expression contributes to the establishment of UV-B tolerance, and the bZIP transcriptional regulator ELONGATED HYPOCOTYL5 (HY5) is required for the transcriptional activation of the PFG1/MYB12 and PFG3/MYb111 genes underUV-B and visible light.
Journal ArticleDOI
UV-B photoreceptor-mediated signalling in plants
Marc Heijde,Roman Ulm +1 more
TL;DR: The current understanding of the UVR8 photoreceptor-mediated pathway is reviewed in the context of UV-B perception mechanism, early signalling components and physiological responses, as well as highlighting differences between these pathways.