Degradation of phytochrome interacting factor 3 in phytochrome-mediated light signaling

Eunae Park, Jonghyun Kim, Yeon Lee, Jieun Shin, Eunkyoo Oh, Won Il Chung, Ryul Liu Jang, Giltsu Choi

Research output: Contribution to journalArticle

137 Citations (Scopus)

Abstract

Plant photoreceptors regulate various developmental processes. Among the photoreceptors, phytochromes, red and far-red light receptors, regulate light responses through many signaling components, including phytochrome-interacting proteins. The functional relationships among phytochromes and their interacting proteins, however, have not been clearly established. Here, we sought to identify a functional relationship between phytochromes and phytochrome interacting factor 3 (PIF3). We demonstrate that PIF3 is polyubiquitinated rapidly and subsequently degraded in PHYA and PHYB-mediated light signaling. We also show that the degradation of PIF3 is mediated by the 26S proteasome. Our data indicate that light-stimulated phytochromes cause the degradation of their interacting protein, PIF3, by the 26S proteasome.

Original languageEnglish
Pages (from-to)968-975
Number of pages8
JournalPlant and Cell Physiology
Volume45
Issue number8
DOIs
Publication statusPublished - 2004 Jan 1
Externally publishedYes

Fingerprint

Phytochrome
phytochrome
Light
degradation
proteasome endopeptidase complex
photoreceptors
Plant Photoreceptors
Proteins
proteins
far-red light

Keywords

  • Arabidopsis
  • Degradation
  • Phytochrome
  • PIF3
  • Ubiquitination

ASJC Scopus subject areas

  • Physiology
  • Plant Science
  • Cell Biology

Cite this

Degradation of phytochrome interacting factor 3 in phytochrome-mediated light signaling. / Park, Eunae; Kim, Jonghyun; Lee, Yeon; Shin, Jieun; Oh, Eunkyoo; Chung, Won Il; Jang, Ryul Liu; Choi, Giltsu.

In: Plant and Cell Physiology, Vol. 45, No. 8, 01.01.2004, p. 968-975.

Research output: Contribution to journalArticle

Park, E, Kim, J, Lee, Y, Shin, J, Oh, E, Chung, WI, Jang, RL & Choi, G 2004, 'Degradation of phytochrome interacting factor 3 in phytochrome-mediated light signaling', Plant and Cell Physiology, vol. 45, no. 8, pp. 968-975. https://doi.org/10.1093/pcp/pch125
Park, Eunae ; Kim, Jonghyun ; Lee, Yeon ; Shin, Jieun ; Oh, Eunkyoo ; Chung, Won Il ; Jang, Ryul Liu ; Choi, Giltsu. / Degradation of phytochrome interacting factor 3 in phytochrome-mediated light signaling. In: Plant and Cell Physiology. 2004 ; Vol. 45, No. 8. pp. 968-975.
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