Borges, F., Calarco, J. P., Martienssen, R. A. (2013) Reprogramming the Epigenome in Arabidopsis Pollen. Cold Spring Harbor Symposia on Quantitative Biology, 77. pp. 1-5. ISSN 00917451 (ISSN)
Abstract
Epigenetic reprogramming in Arabidopsis thaliana occurs in developing pollen. The male gametophyte is derived from haploid microspores via two postmeiotic cell divisions to give rise to the gametes (sperm cells, SC) and the vegetative cell (VC). The purification of individual cell types during pollen development coupled with genome-wide DNA methylation analysis and small RNA sequencing has revealed a dynamic regulation of the epigenome during gametogenesis. Interestingly, imprinted loci and previously identified variable epialleles are hypermethylated in the germline; however, their stability after fertilization appears to require targeted demethylation in the neighboring vegetative cell nucleus, possibly by releasing mobile small RNAs that reinforce transcriptional gene silencing and DNA methylation in the gametes. These results have led to a new model for the establishment and transgenerational maintenance of epigenetic marks in flowering plants.
| Item Type: | Paper |
|---|---|
| Subjects: | organism description > plant > Arabidopsis bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > DNA methylation bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification bioinformatics > genomics and proteomics > genetics & nucleic acid processing organism description > plant |
| CSHL Authors: | |
| Communities: | CSHL labs > Martienssen lab School of Biological Sciences > Publications |
| Depositing User: | Matt Covey |
| Date: | 2013 |
| Date Deposited: | 22 May 2013 20:07 |
| Last Modified: | 19 Jul 2021 13:25 |
| PMCID: | PMC5556929 |
| Related URLs: | |
| URI: | https://repository.cshl.edu/id/eprint/28315 |
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