The LDL1/2-HDA6 Histone Modification Complex Interacts With TOC1 and Regulates the Core Circadian Clock Components in

Overview

Journal Front Plant Sci

Date 2019 Mar 14

PMID 30863422

Citations 15

Authors

Fu-Yu Hung

Fang-Fang Chen

Chenlong Li

Chen Chen

Jian-Hao Chen

Yuhai Cui

Keqiang Wu

Affiliations

Soon will be listed here.

Abstract

In , the circadian rhythm is associated with multiple important biological processes and maintained by multiple interconnected loops that generate robust rhythms. The circadian clock central loop is a negative feedback loop composed of the core circadian clock components. () is highly expressed in the evening and negatively regulates the expression of ()/ (). CCA1/LHY also binds to the promoter of and represses the expression. Our recent research revealed that the histone modification complex comprising of LYSINE-SPECIFIC DEMETHYLASE 1 (LSD1)-LIKE 1/2 (LDL1/2) and HISTONE DEACETYLASE 6 (HDA6) can be recruited by CCA1/LHY to repress expression. In this study, we found that HDA6, LDL1, and LDL2 can interact with TOC1, and the LDL1/2-HDA6 complex is associate with TOC1 to repress the expression. Furthermore, LDL1/2-HDA6 and TOC1 co-target a subset of genes involved in the circadian rhythm. Collectively, our results indicate that the LDL1/2-HDA6 histone modification complex is important for the regulation of the core circadian clock components.

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