Interaction of the response regulator ARR4 with phytochrome B in modulating red light signaling

U Sweere, K Eichenberg, J Lohrmann, V Mira-Rodado, I Bäurle, J Kudla, F Nagy, E Schafer, K Harter

Research output: Contribution to journalArticlepeer-review

Abstract

The Arabidopsis thaliana response regulator 4, expressed in response to phytochrome B action, specifically interacts with the extreme amino-terminus of the photoreceptor. The response regulator 4 stabilizes the active Pfr form of phytochrome B in yeast and in planta, thus elevates the level of the active photoreceptor in vivo. Accordingly, transgenic Arabidopsis plants overexpressing the response regulator 4 display hypersensitivity to red light but not to light of other wavelengths. We propose that the response regulator 4 acts as an output element of a two-component system that modulates red light signaling on the level of the phytochrome B photoreceptor.
Original languageEnglish
Pages (from-to)1108-11
Number of pages4
JournalScience
Volume294
Issue number5544
DOIs
Publication statusPublished - 2001

Fingerprint

Dive into the research topics of 'Interaction of the response regulator ARR4 with phytochrome B in modulating red light signaling'. Together they form a unique fingerprint.

Cite this