Verification at the protein level of the PIF4-mediated external coincidence model for the temperature-adaptive photoperiodic control of plant growth in Arabidopsis thaliana.
Details
Download: BIB_8EABEC2C783F.P001.pdf (1634.88 [Ko])
State: Public
Version: author
State: Public
Version: author
Serval ID
serval:BIB_8EABEC2C783F
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Verification at the protein level of the PIF4-mediated external coincidence model for the temperature-adaptive photoperiodic control of plant growth in Arabidopsis thaliana.
Journal
Plant Signaling and Behavior
ISSN
1559-2324 (Electronic)
ISSN-L
1559-2316
Publication state
Published
Issued date
2013
Volume
8
Number
3
Pages
e23390
Language
english
Abstract
Plant circadian clock controls a wide variety of physiological and developmental events, which include the short-days (SDs)-specific promotion of the elongation of hypocotyls during de-etiolation and also the elongation of petioles during vegetative growth. In A. thaliana, the PIF4 gene encoding a phytochrome-interacting basic helix-loop-helix (bHLH) transcription factor plays crucial roles in this photoperiodic control of plant growth. According to the proposed external coincidence model, the PIF4 gene is transcribed precociously at the end of night specifically in SDs, under which conditions the protein product is stably accumulated, while PIF4 is expressed exclusively during the daytime in long days (LDs), under which conditions the protein product is degraded by the light-activated phyB and also the residual proteins are inactivated by the DELLA family of proteins. A number of previous reports provided solid evidence to support this coincidence model mainly at the transcriptional level of the PIF 4 and PIF4-traget genes. Nevertheless, the diurnal oscillation profiles of PIF4 proteins, which were postulated to be dependent on photoperiod and ambient temperature, have not yet been demonstrated. Here we present such crucial evidence on PIF4 protein level to further support the external coincidence model underlying the temperature-adaptive photoperiodic control of plant growth in A. thaliana.
Pubmed
Open Access
Yes
Create date
06/02/2014 15:22
Last modification date
20/08/2019 15:52