ICE1 and ZOU determine the depth of primary seed dormancy in Arabidopsis independently of their role in endosperm development.
Abscisic Acid
/ metabolism
Arabidopsis
/ genetics
Arabidopsis Proteins
/ genetics
Basic Helix-Loop-Helix Transcription Factors
/ genetics
Endosperm
/ genetics
Gene Expression Regulation, Developmental
Gene Expression Regulation, Plant
Genes, Plant
Germination
/ genetics
Phenotype
Plant Dormancy
/ genetics
Plant Growth Regulators
/ metabolism
Seedlings
/ genetics
Seeds
/ genetics
Signal Transduction
Transcription Factors
/ genetics
ABA
ZOU
ABI3
ICE1
endosperm consumption
primary dormancy
seed development
Journal
The Plant journal : for cell and molecular biology
ISSN: 1365-313X
Titre abrégé: Plant J
Pays: England
ID NLM: 9207397
Informations de publication
Date de publication:
04 2019
04 2019
Historique:
received:
03
09
2018
revised:
20
11
2018
accepted:
12
12
2018
pubmed:
21
12
2018
medline:
28
4
2020
entrez:
21
12
2018
Statut:
ppublish
Résumé
Seed dormancy is a widespread and key adaptive trait that is essential for the establishment of soil seed banks and prevention of pre-harvest sprouting. Herein we demonstrate that the endosperm-expressed transcription factors ZHOUPI (ZOU) and INDUCER OF CBF EXPRESSION1 (ICE1) play a role in determining the depth of primary dormancy in Arabidopsis. We show that ice1 or zou increases seed dormancy and the double mutant has an additive phenotype. This increased dormancy is associated with increased ABA levels, and can be separated genetically from any role in endosperm maturation because loss of ABA biosynthesis or DELAY OF GERMINATION 1 reverses the dormancy phenotype without affecting the aberrant seed morphology. Consistent with these results, ice1 endosperms had an increased capacity for preventing embryo greening, a phenotype previously associated with an increase in endospermic ABA levels. Although ice1 changes the expression of many genes, including some in ABA biosynthesis, catabolism and/or signalling, only ABA INSENSITIVE 3 is significantly misregulated in ice1 mutants. We also demonstrate that ICE1 binds to and inhibits expression of ABA INSENSITIVE 3. Our data demonstrate that Arabidopsis ICE1 and ZOU determine the depth of primary dormancy during maturation independently of their effect on endosperm development.
Identifiants
pubmed: 30570804
doi: 10.1111/tpj.14211
pmc: PMC6900779
doi:
Substances chimiques
ABI3 protein, Arabidopsis
0
Arabidopsis Proteins
0
Basic Helix-Loop-Helix Transcription Factors
0
DOG1 protein, Arabidopsis
0
ICE1 protein, Arabidopsis
0
Plant Growth Regulators
0
RETARDED GROWTH OF EMBRYO1 protein, Arabidopsis
0
Transcription Factors
0
Abscisic Acid
72S9A8J5GW
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
277-290Subventions
Organisme : Swiss National Science Foundation
ID : 31003A_152660
Pays : Switzerland
Organisme : Biotechnology and Biological Sciences Research Council
ID : BB/L003198/2
Pays : United Kingdom
Organisme : Biotechnology and Biological Sciences Research Council
ID : BBS/OS/CP/000001
Pays : United Kingdom
Informations de copyright
© 2018 The Authors. The Plant Journal published by John Wiley & Sons Ltd and Society for Experimental Biology.
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