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Circadian expression profiles of chromatin remodeling factor genes in Arabidopsis

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Abstract

The circadian clock is a biological time keeper mechanism that regulates biological rhythms to a period of approximately 24 h. The circadian clock enables organisms to anticipate environmental cycles and coordinates internal cellular physiology with external environmental cues. In plants, correct matching of the clock with the environment confers fitness advantages to plant survival and reproduction. Therefore, circadian clock components are regulated at multiple layers to fine-tune the circadian oscillation. Epigenetic regulation provides an additional layer of circadian control. However, little is known about which chromatin remodeling factors are responsible for circadian control. In this work, we analyzed circadian expression of 109 chromatin remodeling factor genes and identified 17 genes that display circadian oscillation. In addition, we also found that a candidate interacts with a core clock component, supporting that clock activity is regulated in part by chromatin modification. As an initial attempt to elucidate the relationship between chromatin modification and circadian oscillation, we identified novel regulatory candidates that provide a platform for future investigations of chromatin regulation of the circadian clock.

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Abbreviations

HAT:

Histone acetyltransferase

HDAC:

Histone deacetylase

HDM:

Histone demethylase

HKMT:

Histone lysine methyltransferase

HMT:

Histone methyltransferase

HRMT:

Histone arginine methyltransferase

JMJ:

Jumonji C domain-containing protein

LSD:

Lysine demethylase

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Acknowledgments

This research was supported by the Basic Science Research Program (NRF-2013R1A1A1004831) and Global Research Laboratory Program (2012K1A1A2055546) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education. H.G.L., K.L., and K.J. were supported by the BK21 Plus program in the Department of Bioactive Material Sciences.

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  1. Department of Bioactive Material Sciences and Research Center of Bioactive Materials, Chonbuk National University, Jeonju, 561-756, Korea

    Hong Gil Lee, Kyounghee Lee, Kiyoung Jang & Pil Joon Seo

  2. Department of Chemistry and Research Institute of Physics and Chemistry, Chonbuk National University, Jeonju, 561-756, Korea

    Pil Joon Seo

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  1. Hong Gil Lee
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Lee, H.G., Lee, K., Jang, K. et al. Circadian expression profiles of chromatin remodeling factor genes in Arabidopsis . J Plant Res 128, 187–199 (2015). https://doi.org/10.1007/s10265-014-0665-8

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