Browse

A phytochrome-associated protein phosphatase 2A modulates light signals in flowering time control in Arabidopsis

DC Field Value Language
dc.contributor.authorKim, Dae-Hwan-
dc.contributor.authorKang, Jeong-Gu-
dc.contributor.authorYang, Song-Sook-
dc.contributor.authorChung, Kyung-Sook-
dc.contributor.authorSong, Pill-Soon-
dc.contributor.authorPark, Chung-Mo-
dc.date.accessioned2021-01-31T08:20:52Z-
dc.date.available2021-01-31T08:20:52Z-
dc.date.issued2002-12-
dc.identifier.citationPlant Cell, Vol.14 No.12, pp.3043-3056-
dc.identifier.issn1040-4651-
dc.identifier.other119032-
dc.identifier.urihttps://hdl.handle.net/10371/172025-
dc.description.abstractReversible protein phosphorylation, which is catalyzed by functionally coupled protein kinases and protein phosphatases, is a major signaling mechanism in eukaryotic cellular functions. The red and far-red light-absorbing phytochrome photoreceptors are light-regulated Ser/Thr-specific protein kinases that regulate diverse photomorphogenic processes in plants. Here, we demonstrate that the phytochromes functionally interact with the catalytic subunit of a Ser/Thr-specific protein phosphatase 2A designated FyPIP. The interactions were influenced by phosphorylation status and spectral conformation of the phytochromes. Recombinant FyPP efficiently dephosphorylated oat phytochrome A in the presence of Fe2+ or Zn2+ in a spectral form-dependent manner. FyPP was expressed predominantly in floral organs. Transgenic Arabidopsis plants with overexpressed or suppressed FyPP levels exhibited delayed or accelerated flowering, respectively, indicating that FyPP modulates phytochrome-mediated light signals in the timing of flowering. Accordingly, expression patterns of the clock genes in the long-day flowering pathway were altered greatly. These results indicate that a self-regulatory phytochrome kinase-phosphatase coupling is a key signaling component in the photoperiodic control of flowering.-
dc.titleA phytochrome-associated protein phosphatase 2A modulates light signals in flowering time control in Arabidopsis-
dc.typeArticle-
dc.contributor.AlternativeAuthor박충모-
dc.identifier.doi10.1105/tpc.005306-
dc.citation.journaltitlePlant Cell-
dc.identifier.scopusid2-s2.0-0036914909-
dc.citation.endpage3056-
dc.citation.number12-
dc.citation.startpage3043-
dc.citation.volume14-
dc.identifier.urlhttp://www.plantcell.org/content/14/12/3043-
dc.identifier.rimsid119032-
dc.identifier.sci000179936800007-
dc.contributor.affiliatedAuthorPark, Chung-Mo-
Appears in Collections:
College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
Files in This Item:
There are no files associated with this item.
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse