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ARS Home » Pacific West Area » Albany, California » Plant Gene Expression Center » Research » Publications at this Location » Publication #138072
Title: PHOTOSENSORY PERCEPTION AND SIGNALLING IN PLANT CELLS: NEW PARADIGMS?

Author
item QUAIL, PETER - UCB/ARS PGEC

Submitted to: Current Opinion in Cell Biology
Publication Type: Review Article
Publication Acceptance Date: 3/11/2002
Publication Date: 4/1/2002
Citation: Quail, P.H. 2002. Photosensory perception and signalling in plant cells: new paradigms? Current Opinion in Cell Biology 14(2):180-188.

Interpretive Summary:

Technical Abstract: Plants monitor informational light signals using three sensory photoreceptor families: the phototropins, cryptochromes and phytochromes. Recent advances suggest that the phytochromes act transcriptionally by targeting light signals directly to photoresponsive promoters through binding to a transcriptional regulator. By contrast, the cryptochromes appear to act post-translationally, by disrupting extant proteosome-mediated degradation of a key transcriptional activator through direct binding to a putative E3 ubiquitin ligase, thereby elevating levels of the activator and consequently of target gene expression.