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The Arabidopsis Nucleosome Remodeler DDM1 Allows DNA Methyltransferases to Access H1-Containing Heterochromatin
Open accessAbstract
Summary Nucleosome remodelers of the DDM1/Lsh family are required for DNA methylation of transposable elements, but the reason for this is unknown. How DDM1 interacts with other methylation pathways, such as small RNA-directed DNA methylation (RdDM), which is thought to mediate asymmetric methylation through DRM enzymes, is also unclear. Here, we show that most asymmetric methylation is facilitated by DDM1 and mediated by the methyltransferase CMT2 separately from RdDM. We find that heterochromatic sequences preferentially require DDM1 for DNA methylation, and that this preference depends on linker histone H1. RdDM is instead inhibited by heterochromatin and absolutely requires the nucleosome remodeler DRD1. Together, DDM1 and RdDM mediate nearly all transposon methylation, and collaborate to repress transposition and regulate the methylation and expression of genes. Our results indicate that DDM1 provides DNA methyltransferases access to H1-containing heterochromatin to allow stable silencing of transposable elements in cooperation with the RdDM pathway.
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Histone H2A.Z and DNA methylation are mutually antagonistic chromatin marks
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Self-citationA Role for RNAi in the Selective Correction of DNA Methylation Defects
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Cited by
Transgenerational epigenetic inheritance: myths and mechanisms
Heard, E., & Martienssen, R. A. (2014) · Cell · doi:10.1016/j.cell.2014.02.045 · Cited by 1,864
DNA methylation pathways and their crosstalk with histone methylation
Du, J., Johnson, L. M., Jacobsen, S. E., & Patel, D. J. (2015) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm4043 · Cited by 1,000
A CRISPR/Cas9 Toolbox for Multiplexed Plant Genome Editing and Transcriptional Regulation
Lowder, L. G., Zhang, D., Baltes, N. J., Paul, J. W., Tang, X., Zheng, X., Voytas, D. F., Hsieh, T.-F., Zhang, Y., & Qi, Y. (2015) · Plant Physiology · doi:10.1104/pp.15.00636 · Cited by 707
Regulation of transposable elements by DNA modifications
Deniz, Ö., Frost, J. M., & Branco, M. R. (2019) · Nature Reviews Genetics · doi:10.1038/s41576-019-0106-6 · Cited by 486
Epigenetic Regulation in Plants
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Metadata
- Authors
- Zemach, A., Kim, M. Y., Hsieh, P.-H., Coleman-Derr, D., Eshed-Williams, L., Thao, K., Harmer, S. L., & Zilberman, D.
- Venue
- Cell
- Publisher
- Elsevier BV
- Published
- 2013-03
- Volume
- 153
- Issue
- 1
- Pages
- 193-205
- ISSN
- 0092-8674 (ISSN-L)
- OpenAlex
- W2020173141
- Cited by
- 1,180
- References
- 4
- FWCI
- 33.49
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Zemach, A., Kim, M. Y., Hsieh, P.-H., Coleman-Derr, D., Eshed-Williams, L., Thao, K., Harmer, S. L., & Zilberman, D. (2013). The Arabidopsis Nucleosome Remodeler DDM1 Allows DNA Methyltransferases to Access H1-Containing Heterochromatin. Cell. https://doi.org/10.1016/j.cell.2013.02.033
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