UV-B perception and signalling in plants

Plant Molecular Biology

Sunlight is of utmost importance to plants, not only as energy source but also as an environmental signal regulating growth and development. An important and increasing part of the incident sunlight encompasses a segment of the ultraviolet-B region (UV-B; 280-315 nm) that is not entirely absorbed by the ozone layer in the stratosphere of the Earth. UV-B radiation is potentially harmful for any organism exposed to it, but is also used as an informational signal for which plants have evolved specific and sensitive UV-B perception systems promoting UV-B acclimation and tolerance. Our understanding of this UV-B sensory pathway is presently limited to a small number of major players, and even less is known on their interplay, regulations and mechanisms of action. The major aim of our laboratory is a better understanding of UV-B perception and signalling in plants that leads to UV-B acclimation and survival.

Research topics

  • UV-B response

  • Photomorphogenesis

  • MAP kinase phosphatases

  • Abiotic stress responses

Interdisciplinary

  • Photobiology

  • Environmental stress signalling

Contact Person

Prof. Dr. Roman Ulm

University of Geneva
Department of Botany and Plant Biology
Website
roman.ulm-at-unige.ch
+41 (0)22 379 36 50


Recent publications

  • Title: Arabidopsis MAP kinase phosphatase 1 and its target MAP kinases 3 and 6 antagonistically determine UV-B stress tolerance, independent of the UVR8 photoreceptor pathway
    Author(s): Besteiro, Marina A. Gonzalez; Bartels, Sebastian; Albert, Andreas; et al.
    Source: PLANT JOURNAL, 68 (4): 727-737 NOV 2011
    Document type: Article (Details)
  • Arabidopsis MAP Kinase Phosphatase 1 (AtMKP1) negatively regulates MPK6-mediated PAMP responses and resistance against bacteria
    Anderson, JC; Bartels, S; Besteiro, MAG; et al.
    PLANT JOURNAL 67 (2): 258-268 JUL 2011 (Details)
  • Functional interaction of the circadian clock and UV RESISTANCE LOCUS 8-controlled UV-B signaling pathways in Arabidopsis thaliana
    Feher, B; Kozma-Bognar, L; Kevei, E; et al.
    PLANT JOURNAL 67 (1): 37-48 JUL 2011 (Details)
  • Light-regulated interactions with SPA proteins underlie cryptochrome-mediated gene expression
    Fankhauser, C; Ulm, R
    GENES & DEVELOPMENT 25 (10): 1004-1009 MAY 15 2011 (Details)
  • Perception of UV-B by the Arabidopsis UVR8 Protein
    Rizzini, L; Favory, JJ; Cloix, C; et al.
    SCIENCE 332 (6025): 103-106 APR 1 2011 (Details)