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The Transcriptional Network in the Arabidopsis Circadian Clock System

The circadian clock is the biological timekeeping system that governs the approximately 24-h rhythms of genetic, metabolic, physiological and behavioral processes in most organisms. This oscillation allows organisms to anticipate and adapt to day–night changes in the environment. Molecular studies h...

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Autor principal: Nakamichi, Norihito
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7692566/
https://www.ncbi.nlm.nih.gov/pubmed/33138078
http://dx.doi.org/10.3390/genes11111284
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author Nakamichi, Norihito
author_facet Nakamichi, Norihito
author_sort Nakamichi, Norihito
collection PubMed
description The circadian clock is the biological timekeeping system that governs the approximately 24-h rhythms of genetic, metabolic, physiological and behavioral processes in most organisms. This oscillation allows organisms to anticipate and adapt to day–night changes in the environment. Molecular studies have indicated that a transcription–translation feedback loop (TTFL), consisting of transcriptional repressors and activators, is essential for clock function in Arabidopsis thaliana (Arabidopsis). Omics studies using next-generation sequencers have further revealed that transcription factors in the TTFL directly regulate key genes implicated in clock-output pathways. In this review, the target genes of the Arabidopsis clock-associated transcription factors are summarized. The Arabidopsis clock transcriptional network is partly conserved among angiosperms. In addition, the clock-dependent transcriptional network structure is discussed in the context of plant behaviors for adapting to day–night cycles.
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spelling pubmed-76925662020-11-28 The Transcriptional Network in the Arabidopsis Circadian Clock System Nakamichi, Norihito Genes (Basel) Review The circadian clock is the biological timekeeping system that governs the approximately 24-h rhythms of genetic, metabolic, physiological and behavioral processes in most organisms. This oscillation allows organisms to anticipate and adapt to day–night changes in the environment. Molecular studies have indicated that a transcription–translation feedback loop (TTFL), consisting of transcriptional repressors and activators, is essential for clock function in Arabidopsis thaliana (Arabidopsis). Omics studies using next-generation sequencers have further revealed that transcription factors in the TTFL directly regulate key genes implicated in clock-output pathways. In this review, the target genes of the Arabidopsis clock-associated transcription factors are summarized. The Arabidopsis clock transcriptional network is partly conserved among angiosperms. In addition, the clock-dependent transcriptional network structure is discussed in the context of plant behaviors for adapting to day–night cycles. MDPI 2020-10-29 /pmc/articles/PMC7692566/ /pubmed/33138078 http://dx.doi.org/10.3390/genes11111284 Text en © 2020 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Nakamichi, Norihito
The Transcriptional Network in the Arabidopsis Circadian Clock System
title The Transcriptional Network in the Arabidopsis Circadian Clock System
title_full The Transcriptional Network in the Arabidopsis Circadian Clock System
title_fullStr The Transcriptional Network in the Arabidopsis Circadian Clock System
title_full_unstemmed The Transcriptional Network in the Arabidopsis Circadian Clock System
title_short The Transcriptional Network in the Arabidopsis Circadian Clock System
title_sort transcriptional network in the arabidopsis circadian clock system
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7692566/
https://www.ncbi.nlm.nih.gov/pubmed/33138078
http://dx.doi.org/10.3390/genes11111284
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