中文版 | English
Title

COP1 SUPPRESSOR 6 represses the PIF4 and PIF5 action to promote light-inhibited hypocotyl growth

Author
Corresponding AuthorXu,Dongqing; Deng,Xing Wang
Joint first authorLan,Hongxia; Heng,Yueqin; Li,Jian
Publication Years
2022
DOI
Source Title
ISSN
1672-9072
EISSN
1744-7909
Abstract

Light signaling precisely controls photomorphogenic development in plants. PHYTOCHROME INTERACTING FACTOR 4 and 5 (PIF4 and PIF5) play critical roles in the regulation of this developmental process. In this study, we report CONSTITUTIVELY PHOTOMORPHOGENIC 1 SUPPRESSOR 6 (CSU6) functions as a key regulator of light signaling. Loss of CSU6 function largely rescues the cop1-6 constitutively photomorphogenic phenotype. CSU6 promotes hypocotyl growth in the dark, but inhibits hypocotyl elongation in the light. CSU6 not only associates with the promoter regions of PIF4 and PIF5 to inhibit their expression in the morning, but also directly interacts with both PIF4 and PIF5 to repress their transcriptional activation activity. CSU6 negatively controls a group of PIF4- and PIF5-regulated gene expressions. Mutations in PIF4 and/or PIF5 are epistatic to the loss of CSU6, suggesting that CSU6 acts upstream of PIF4 and PIF5. Taken together, CSU6 promotes light-inhibited hypocotyl elongation by negatively regulating PIF4 and PIF5 transcription and biochemical activity.

Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
First ; 共同第一 ; Corresponding
Funding Project
National Natural Science Foundation of China[
WOS Research Area
Biochemistry & Molecular Biology ; Plant Sciences
WOS Subject
Biochemistry & Molecular Biology ; Plant Sciences
WOS Accession No
WOS:000859045200001
Publisher
Scopus EID
2-s2.0-85138655307
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/402763
DepartmentSUSTech-Peking University National Institute of Plants and Food
生命科学学院
生命科学学院_生物系
Affiliation
1.Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes,Department of Biology,Institute of Plant and Food Sciences,School of Life Sciences,Southern University of Science and Technology,Shenzhen,518055,China
2.State Key Laboratory of Crop Genetics and Germplasm Enhancement,National Center for Soybean Improvement,College of Agriculture,Nanjing Agricultural University,Nanjing,210095,China
3.Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China,Institute of Plant and Environment Protection,Beijing Academy of Agriculture and Forestry Sciences,Beijing,100097,China
4.State Key Laboratory of Protein and Plant Gene Research,Peking-Tsinghua Center for Life Sciences,School of Advanced Agriculture Sciences and School of Life Sciences,Peking University,Beijing,100871,China
First Author AffilicationSUSTech-Peking University National Institute of Plants and Food;  Department of Biology;  School of Life Sciences
Corresponding Author AffilicationSUSTech-Peking University National Institute of Plants and Food;  Department of Biology;  School of Life Sciences
First Author's First AffilicationSUSTech-Peking University National Institute of Plants and Food;  Department of Biology;  School of Life Sciences
Recommended Citation
GB/T 7714
Lan,Hongxia,Heng,Yueqin,Li,Jian,et al. COP1 SUPPRESSOR 6 represses the PIF4 and PIF5 action to promote light-inhibited hypocotyl growth[J]. Journal of Integrative Plant Biology,2022.
APA
Lan,Hongxia.,Heng,Yueqin.,Li,Jian.,Zhang,Mengdi.,Bian,Yeting.,...&Deng,Xing Wang.(2022).COP1 SUPPRESSOR 6 represses the PIF4 and PIF5 action to promote light-inhibited hypocotyl growth.Journal of Integrative Plant Biology.
MLA
Lan,Hongxia,et al."COP1 SUPPRESSOR 6 represses the PIF4 and PIF5 action to promote light-inhibited hypocotyl growth".Journal of Integrative Plant Biology (2022).
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