{"citation":{"apa":"Ibarra, C. A., Feng, X., Schoft, V. K., Hsieh, T.-F., Uzawa, R., Rodrigues, J. A., … Zilberman, D. (2012). Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes. <i>Science</i>. American Association for the Advancement of Science. <a href=\"https://doi.org/10.1126/science.1224839\">https://doi.org/10.1126/science.1224839</a>","mla":"Ibarra, Christian A., et al. “Active DNA Demethylation in Plant Companion Cells Reinforces Transposon Methylation in Gametes.” <i>Science</i>, vol. 337, no. 6100, American Association for the Advancement of Science, 2012, pp. 1360–64, doi:<a href=\"https://doi.org/10.1126/science.1224839\">10.1126/science.1224839</a>.","ieee":"C. A. Ibarra <i>et al.</i>, “Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes,” <i>Science</i>, vol. 337, no. 6100. American Association for the Advancement of Science, pp. 1360–1364, 2012.","chicago":"Ibarra, Christian A., Xiaoqi Feng, Vera K. Schoft, Tzung-Fu Hsieh, Rie Uzawa, Jessica A. Rodrigues, Assaf Zemach, et al. “Active DNA Demethylation in Plant Companion Cells Reinforces Transposon Methylation in Gametes.” <i>Science</i>. American Association for the Advancement of Science, 2012. <a href=\"https://doi.org/10.1126/science.1224839\">https://doi.org/10.1126/science.1224839</a>.","ama":"Ibarra CA, Feng X, Schoft VK, et al. Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes. <i>Science</i>. 2012;337(6100):1360-1364. doi:<a href=\"https://doi.org/10.1126/science.1224839\">10.1126/science.1224839</a>","short":"C.A. Ibarra, X. Feng, V.K. Schoft, T.-F. Hsieh, R. Uzawa, J.A. Rodrigues, A. Zemach, N. Chumak, A. Machlicova, T. Nishimura, D. Rojas, R.L. Fischer, H. Tamaru, D. Zilberman, Science 337 (2012) 1360–1364.","ista":"Ibarra CA, Feng X, Schoft VK, Hsieh T-F, Uzawa R, Rodrigues JA, Zemach A, Chumak N, Machlicova A, Nishimura T, Rojas D, Fischer RL, Tamaru H, Zilberman D. 2012. Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes. Science. 337(6100), 1360–1364."},"intvolume":"       337","author":[{"first_name":"Christian A.","full_name":"Ibarra, Christian A.","last_name":"Ibarra"},{"last_name":"Feng","full_name":"Feng, Xiaoqi","id":"e0164712-22ee-11ed-b12a-d80fcdf35958","orcid":"0000-0002-4008-1234","first_name":"Xiaoqi"},{"first_name":"Vera K.","last_name":"Schoft","full_name":"Schoft, Vera K."},{"full_name":"Hsieh, Tzung-Fu","last_name":"Hsieh","first_name":"Tzung-Fu"},{"full_name":"Uzawa, Rie","last_name":"Uzawa","first_name":"Rie"},{"full_name":"Rodrigues, Jessica A.","last_name":"Rodrigues","first_name":"Jessica A."},{"last_name":"Zemach","full_name":"Zemach, Assaf","first_name":"Assaf"},{"first_name":"Nina","full_name":"Chumak, Nina","last_name":"Chumak"},{"first_name":"Adriana","full_name":"Machlicova, Adriana","last_name":"Machlicova"},{"full_name":"Nishimura, Toshiro","last_name":"Nishimura","first_name":"Toshiro"},{"first_name":"Denisse","full_name":"Rojas, Denisse","last_name":"Rojas"},{"full_name":"Fischer, Robert L.","last_name":"Fischer","first_name":"Robert L."},{"first_name":"Hisashi","full_name":"Tamaru, Hisashi","last_name":"Tamaru"},{"full_name":"Zilberman, Daniel","last_name":"Zilberman","first_name":"Daniel"}],"department":[{"_id":"XiFe"}],"quality_controlled":"1","scopus_import":"1","pmid":1,"abstract":[{"text":"The Arabidopsis thaliana central cell, the companion cell of the egg, undergoes DNA demethylation before fertilization, but the targeting preferences, mechanism, and biological significance of this process remain unclear. Here, we show that active DNA demethylation mediated by the DEMETER DNA glycosylase accounts for all of the demethylation in the central cell and preferentially targets small, AT-rich, and nucleosome-depleted euchromatic transposable elements. The vegetative cell, the companion cell of sperm, also undergoes DEMETER-dependent demethylation of similar sequences, and lack of DEMETER in vegetative cells causes reduced small RNA–directed DNA methylation of transposons in sperm. Our results demonstrate that demethylation in companion cells reinforces transposon methylation in plant gametes and likely contributes to stable silencing of transposable elements across generations.","lang":"eng"}],"month":"09","publication_identifier":{"issn":["0036-8075"],"eissn":["1095-9203"]},"type":"journal_article","article_type":"original","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","date_published":"2012-09-14T00:00:00Z","keyword":["Multidisciplinary"],"date_created":"2023-01-16T09:21:24Z","oa_version":"Published Version","title":"Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes","status":"public","doi":"10.1126/science.1224839","issue":"6100","acknowledgement":"We thank S. Harmer for assistance with the analysis of histone modifications, the BioOptics team at the Vienna Biocenter Campus for sorting sperm and vegetative cell nuclei, K. Slotkin for the LAT52p-amiRNA=GFP plasmid, and G. Drews for the DD45p-GFP transgenic line. This work was partially funded by an NIH grant (GM69415) to R.L.F., NSF grants (MCB-0918821 and IOS-1025890) to R.L.F. and D.Z., a Young Investigator Grant from the Arnold and Mabel Beckman Foundation to D.Z., an Austrian Science Fund (FWF) grant P21389-B03 to H.T., a Ruth L. Kirschstein NIH Predoctoral Fellowship (GM093633) to C.A.I., a Fulbright Scholarship to J.A.R., a fellowship from the Jane Coffin Childs Memorial Fund to A.Z., and a Robert and Colleen Haas Scholarship to D.R. Sequencing data are deposited in GEO (GSE38935).","page":"1360-1364","main_file_link":[{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4034762/","open_access":"1"}],"date_updated":"2023-10-16T09:27:26Z","_id":"12198","publication":"Science","day":"14","publisher":"American Association for the Advancement of Science","year":"2012","volume":337,"oa":1,"language":[{"iso":"eng"}],"publication_status":"published","external_id":{"pmid":["22984074"]}}