PMID- 27989670
OWN - NLM
STAT- MEDLINE
DCOM- 20180716
LR  - 20220317
IS  - 1879-0445 (Electronic)
IS  - 0960-9822 (Print)
IS  - 0960-9822 (Linking)
VI  - 27
IP  - 1
DP  - 2017 Jan 9
TI  - UV-B Perceived by the UVR8 Photoreceptor Inhibits Plant Thermomorphogenesis.
PG  - 120-127
LID - S0960-9822(16)31329-X [pii]
LID - 10.1016/j.cub.2016.11.004 [doi]
AB  - Small increases in ambient temperature can elicit striking effects on plant 
      architecture, collectively termed thermomorphogenesis [1]. In Arabidopsis 
      thaliana, these include marked stem elongation and leaf elevation, responses that 
      have been predicted to enhance leaf cooling [2-5]. Thermomorphogenesis requires 
      increased auxin biosynthesis, mediated by the bHLH transcription factor 
      PHYTOCHROME-INTERACTING FACTOR 4 (PIF4) [6-8], and enhanced stability of the 
      auxin co-receptor TIR1, involving HEAT SHOCK PROTEIN 90 (HSP90) [9]. 
      High-temperature-mediated hypocotyl elongation additionally involves localized 
      changes in auxin metabolism, mediated by the indole-3-acetic acid (IAA)-amido 
      synthetase Gretchen Hagen 3 (GH3).17 [10]. Here we show that ultraviolet-B light 
      (UV-B) perceived by the photoreceptor UV RESISTANCE LOCUS 8 (UVR8) [11] strongly 
      attenuates thermomorphogenesis via multiple mechanisms inhibiting PIF4 
      activity. Suppression of thermomorphogenesis involves UVR8 and CONSTITUTIVELY 
      PHOTOMORPHOGENIC 1 (COP1)-mediated repression of PIF4 transcript accumulation, 
      reducing PIF4 abundance. UV-B also stabilizes the bHLH protein LONG HYPOCOTYL IN 
      FAR RED (HFR1), which can bind to and inhibit PIF4 function. Collectively, our 
      results demonstrate complex crosstalk between UV-B and high-temperature 
      signaling. As plants grown in sunlight would most likely experience concomitant 
      elevations in UV-B and ambient temperature, elucidating how these pathways are 
      integrated is of key importance to the understanding of plant development in 
      natural environments.
CI  - Copyright (c) 2017 The Authors. Published by Elsevier Ltd.. All rights reserved.
FAU - Hayes, Scott
AU  - Hayes S
AD  - School of Biological Sciences, Life Sciences Building, University of Bristol, 
      Bristol BS8 1TQ, UK; Plant Ecophysiology, Institute of Environmental Biology 
      (IEB), Utrecht University, Padualaan 8, 3584 Utrecht, the Netherlands.
FAU - Sharma, Ashutosh
AU  - Sharma A
AD  - School of Biological Sciences, Life Sciences Building, University of Bristol, 
      Bristol BS8 1TQ, UK.
FAU - Fraser, Donald P
AU  - Fraser DP
AD  - School of Biological Sciences, Life Sciences Building, University of Bristol, 
      Bristol BS8 1TQ, UK.
FAU - Trevisan, Martine
AU  - Trevisan M
AD  - Centre for Integrative Genomics, Faculty of Biology and Medicine, University of 
      Lausanne, 1015 Lausanne, Switzerland.
FAU - Cragg-Barber, C Kester
AU  - Cragg-Barber CK
AD  - School of Biological Sciences, Life Sciences Building, University of Bristol, 
      Bristol BS8 1TQ, UK.
FAU - Tavridou, Eleni
AU  - Tavridou E
AD  - Department of Botany and Plant Biology, University of Geneva, Sciences III, 30 
      Quai E. Ansermet, 1211 Geneva 4, Switzerland.
FAU - Fankhauser, Christian
AU  - Fankhauser C
AD  - Centre for Integrative Genomics, Faculty of Biology and Medicine, University of 
      Lausanne, 1015 Lausanne, Switzerland.
FAU - Jenkins, Gareth I
AU  - Jenkins GI
AD  - Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary 
      and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK.
FAU - Franklin, Keara A
AU  - Franklin KA
AD  - School of Biological Sciences, Life Sciences Building, University of Bristol, 
      Bristol BS8 1TQ, UK. Electronic address: kerry.franklin@bristol.ac.uk.
LA  - eng
PT  - Journal Article
DEP - 20161215
PL  - England
TA  - Curr Biol
JT  - Current biology : CB
JID - 9107782
RN  - 0 (Arabidopsis Proteins)
RN  - 0 (Basic Helix-Loop-Helix Transcription Factors)
RN  - 0 (Chromosomal Proteins, Non-Histone)
RN  - 0 (PIF4 protein, Arabidopsis)
RN  - 0 (Uvr8 protein, Arabidopsis)
RN  - EC 2.3.2.27 (AT2G32950 protein, Arabidopsis)
RN  - EC 2.3.2.27 (Ubiquitin-Protein Ligases)
SB  - IM
CIN - Curr Biol. 2017 Jan 9;27(1):R28-R30. PMID: 28073019
MH  - Arabidopsis/*growth & development/metabolism/radiation effects
MH  - Arabidopsis Proteins/genetics/*metabolism
MH  - Basic Helix-Loop-Helix Transcription Factors/genetics/metabolism
MH  - Chromosomal Proteins, Non-Histone/genetics/*metabolism
MH  - Gene Expression Regulation, Plant/*radiation effects
MH  - Hot Temperature
MH  - Plant Stems/*growth & development/metabolism/radiation effects
MH  - Ubiquitin-Protein Ligases/genetics/metabolism
MH  - Ultraviolet Rays/*adverse effects
PMC - PMC5226890
OTO - NOTNLM
OT  - Arabidopsis
OT  - HFR1
OT  - PIF4
OT  - UV-B
OT  - UVR8
OT  - auxin
OT  - high temperature
OT  - hypocotyl
EDAT- 2016/12/19 06:00
MHDA- 2018/07/17 06:00
PMCR- 2017/01/09
CRDT- 2016/12/20 06:00
PHST- 2016/05/19 00:00 [received]
PHST- 2016/10/07 00:00 [revised]
PHST- 2016/11/01 00:00 [accepted]
PHST- 2016/12/19 06:00 [pubmed]
PHST- 2018/07/17 06:00 [medline]
PHST- 2016/12/20 06:00 [entrez]
PHST- 2017/01/09 00:00 [pmc-release]
AID - S0960-9822(16)31329-X [pii]
AID - 10.1016/j.cub.2016.11.004 [doi]
PST - ppublish
SO  - Curr Biol. 2017 Jan 9;27(1):120-127. doi: 10.1016/j.cub.2016.11.004. Epub 2016 
      Dec 15.