Subcellular partitioning-dependent functional switching of Arabidopsis photoreceptor phytochrome B in response to brassinosteroids
نویسندگان
چکیده
منابع مشابه
Light-dependent Translocation of a Phytochrome B-GFP Fusion Protein to the Nucleus in Transgenic Arabidopsis
Phytochrome is a ubiquitous photoreceptor of plants and is encoded by a small multigene family. We have shown recently that a functional nuclear localization signal may reside within the COOH-terminal region of a major member of the family, phytochrome B (phyB) (Sakamoto, K., and A. Nagatani. 1996. Plant J. 10:859-868). In the present study, a fusion protein consisting of full-length phyB and t...
متن کاملPhytochrome A and B Regulate Primary Metabolism in Arabidopsis Leaves in Response to Light
Primary metabolism is closely linked to plant productivity and quality. Thus, a better understanding of the regulation of primary metabolism by photoreceptors has profound implications for agricultural practices and management. This study aims at identifying the role of light signaling in the regulation of primary metabolism, with an emphasis on starch. We first screened seven cryptochromes and...
متن کاملFunctional analysis of amino-terminal domains of the photoreceptor phytochrome B.
At the core of the circadian network in Arabidopsis (Arabidopsis thaliana), clock genes/proteins form multiple transcriptional/translational negative feedback loops and generate a basic approximately 24-h oscillation, which provides daily regulation for a wide range of processes. This temporal organization enhances the fitness of plants only if it corresponds to the natural day/night cycles. Li...
متن کاملUltraviolet B radiation enhances a phytochrome-B-mediated photomorphogenic response in Arabidopsis.
Ultraviolet B radiation (UV-B, 290-315 nm) can cause damage and induce photomorphogenic responses in plants. The mechanisms that mediate the photomorphogenic effects of UV-B are unclear. In etiolated Arabidopsis seedlings, a daily exposure to 2.5 h of UV-B enhanced the cotyledon opening response induced by a subsequent red light (R) pulse. An R pulse alone, 2.5 h of UV-B terminated with a far-r...
متن کاملFunctional analysis of a 450-amino acid N-terminal fragment of phytochrome B in Arabidopsis.
Phytochrome, a major photoreceptor in plants, consists of two domains: the N-terminal photosensory domain and the C-terminal domain. Recently, the 651-amino acid photosensory domain of phytochrome B (phyB) has been shown to act as a functional photoreceptor in the nucleus. The phytochrome (PHY) domain, which is located at the C-terminal end of the photosensory domain, is required for the spectr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Interdisciplinary Bio Central
سال: 2009
ISSN: 2005-8543
DOI: 10.4051/ibc.2009.1.0001