Adjustment of the PIF7-HFR1 transcriptional module activity controls plant shade adaptation.
Acclimatization
/ genetics
Arabidopsis
/ genetics
Arabidopsis Proteins
/ genetics
Base Sequence
Basic Helix-Loop-Helix Transcription Factors
/ genetics
DNA-Binding Proteins
/ genetics
Gene Expression Regulation, Plant
/ genetics
Hypocotyl
/ genetics
Phytochrome
/ genetics
Transcription, Genetic
/ genetics
Cardamine hirsuta
HFR1
PIFs
shade avoidance
shade tolerance
Journal
The EMBO journal
ISSN: 1460-2075
Titre abrégé: EMBO J
Pays: England
ID NLM: 8208664
Informations de publication
Date de publication:
04 01 2021
04 01 2021
Historique:
received:
15
12
2019
revised:
01
10
2020
accepted:
16
10
2020
pubmed:
3
12
2020
medline:
21
4
2021
entrez:
2
12
2020
Statut:
ppublish
Résumé
Shade caused by the proximity of neighboring vegetation triggers a set of acclimation responses to either avoid or tolerate shade. Comparative analyses between the shade-avoider Arabidopsis thaliana and the shade-tolerant Cardamine hirsuta revealed a role for the atypical basic-helix-loop-helix LONG HYPOCOTYL IN FR 1 (HFR1) in maintaining the shade tolerance in C. hirsuta, inhibiting hypocotyl elongation in shade and constraining expression profile of shade-induced genes. We showed that C. hirsuta HFR1 protein is more stable than its A. thaliana counterpart, likely due to its lower binding affinity to CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1), contributing to enhance its biological activity. The enhanced HFR1 total activity is accompanied by an attenuated PHYTOCHROME INTERACTING FACTOR (PIF) activity in C. hirsuta. As a result, the PIF-HFR1 module is differently balanced, causing a reduced PIF activity and attenuating other PIF-mediated responses such as warm temperature-induced hypocotyl elongation (thermomorphogenesis) and dark-induced senescence. By this mechanism and that of the already-known of phytochrome A photoreceptor, plants might ensure to properly adapt and thrive in habitats with disparate light amounts.
Identifiants
pubmed: 33264441
doi: 10.15252/embj.2019104273
pmc: PMC7780144
doi:
Substances chimiques
Arabidopsis Proteins
0
Basic Helix-Loop-Helix Transcription Factors
0
DNA-Binding Proteins
0
HFR1 protein, Arabidopsis
0
PIF7 protein, Arabidopsis
0
Phytochrome
11121-56-5
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e104273Subventions
Organisme : Max Planck Society
Organisme : Generalitat de Catalunya (Government of Catalonia)
Organisme : Ministerio de Economía, Industria y Competitividad, Gobierno de España (MINECO)
ID : BIO2017-85316-R
Organisme : CERCA Programme
Organisme : Biotechnology and Biological Sciences Research Council
ID : BB/H006974/1
Pays : United Kingdom
Organisme : Laboratoire Systèmes et Ingénierie de Paris-Saclay (Labex LaSIPS)
ID : ANR-10-LABX-0040-SPS
Organisme : Xarba
Organisme : Chinese Government Scholarship
Organisme : Government of Catalonia | Agència de Gestió d'Ajuts Universitaris i de Recerca (AGAUR)
ID : 2017-SGR1211
Organisme : Howard Hughes Medical Institute (HHMI)
Organisme : European Commission (EC)
Organisme : Centro de Excelencia Severo Ochoa 2016-2019
ID : SEV-2015-0533
Informations de copyright
© 2020 The Authors.
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