Abstract
Seed development begins upon double fertilization, producing the embryo and endosperm, which are genetically identical, except for their ploidy level. DEMETER (DME), a member of the DNA glycosylase family, functions as a DNA demethylase via the base excision repair pathway. DME is specifically expressed prior to fertilization in two gamete companion cells, central cell of the female gametophyte and vegetative cell of the male gametophyte, but not in the heritable gamete cells or embryo. Mutations in the DME gene cause hypermethylation in the endosperm, leading to endosperm overproliferation and seed abortion after fertilization. DME-mediated DNA demethylation preferentially targets euchromatic transposable elements (TEs), resulting in TE activation and initiation of de novo methylation through RNA-directed DNA methylation, and provides FERTILIZATION-INDEPENDENT SEED 2 (FIS2)-Polycomb Repressive Complex 2-binding sites, resulting in histone modifications and genomic imprinting during reproduction. The global demethylation of TEs in gamete companion cells and active de novo methylation in the embryo suggest a new role of sexual companion cells in reinforcing the genome integrity of the heritable tissue. In this review, we provide an overview of demethylation in sexual companion cells and the endosperm, and discuss its evolutionary effect on the heritable gamete cells and embryo.
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References
Ashapkin VV, Kutueva LI, Aleksandrushkina NI, Vanyushin BF (2019) Epigenetic regulation of plant gametophyte development. Int J Mol Sci 20(12):3051
Batista RA, Figueiredo DD, Santos-Gonzalez J, Kohler C (2019) Auxin regulates endosperm cellularization in Arabidopsis. Genes Dev 33(7–8):466–476
Borges F, Gomes G, Gardner R, Moreno N, McCormick S, Feijo JA, Becker JD (2008) Comparative transcriptomics of Arabidopsis sperm cells. Plant Physiol 148(2):1168–1181
Borges F, Parent JS, van Ex F, Wolff P, Martinez G, Kohler C, Martienssen RA (2018) Transposon-derived small RNAs triggered by miR845 mediate genome dosage response in Arabidopsis. Nat Genet 50(2):186–192
Calarco JP, Borges F, Donoghue MT, Van Ex F, Jullien PE, Lopes T, Gardner R, Berger F, Feijo JA, Becker JD, Martienssen RA (2012) Reprogramming of DNA methylation in pollen guides epigenetic inheritance via small RNA. Cell 151(1):194–205
Choi Y, Gehring M, Johnson L, Hannon M, Harada JJ, Goldberg RB, Jacobsen SE, Fischer RL (2002) DEMETER, a DNA glycosylase domain protein, is required for endosperm gene imprinting and seed viability in Arabidopsis. Cell 110(1):33–42
Clark SJ, Smallwood SA, Lee HJ, Krueger F, Reik W, Kelsey G (2017) Genome-wide base-resolution mapping of DNA methylation in single cells using single-cell bisulfite sequencing(scBS-seq). Nat Protoc 12(3):534-U159
de Felippes FF, Ott F, Weigel D (2011) Comparative analysis of non-autonomous effects of tasiRNAs and miRNAs in Arabidopsis thaliana. Nucleic Acids Res 39(7):2880–2889
de Mendoza A, Lister R, Bogdanovic O (2019) Evolution of DNA methylome diversity in eukaryotes. J Mol Biol 432(6):1687–1705
Deniz O, Frost JM, Branco MR (2019) Regulation of transposable elements by DNA modifications. Nat Rev Genet 20(7):417–431
Dunoyer P, Melnyk C, Molnar A, Slotkin RK (2013) Plant Mobile Small RNAs. CSH Perspect Biol 5(7):a017897
Erdmann RM, Hoffmann A, Walter HK, Wagenknecht HA, Gross-Hardt R, Gehring M (2017) Molecular movement in the Arabidopsis thaliana female gametophyte. Plant Reprod 30(3):141–146
Frost JM, Kim MY, Park GT, Hsieh PH, Nakamura M, Lin SJH, Yoo H, Choi J, Ikeda Y, Kinoshita T, Choi Y, Zilberman D, Fischer RL (2018) FACT complex is required for DNA demethylation at heterochromatin during reproduction in Arabidopsis. Proc Natl Acad Sci USA 115(20):E4720–E4729
Gehring M, Huh JH, Hsieh TF, Penterman J, Choi Y, Harada JJ, Goldberg RB, Fischer RL (2006) DEMETER DNA glycosylase establishes MEDEA polycomb gene self-imprinting by allele-specific demethylation. Cell 124(3):495–506
Gehring M, Bubb KL, Henikoff S (2009) Extensive demethylation of repetitive elements during seed development underlies gene imprinting. Science 324(5933):1447–1451
Gehring M, Missirian V, Henikoff S (2011) Genomic analysis of parent-of-origin allelic expression in Arabidopsis thaliana seeds. PLoS One 6(8):e23687
Guo JU, Su YJ, Shin JH, Shin JH, Li HD, Xie B, Zhong C, Hu SH, Le T, Fan GP, Zhu H, Chang Q, Gao Y, Ming GL, Song HJ (2014) Distribution, recognition and regulation of non-CpG methylation in the adult mammalian brain. Nat Neurosci 17(2):215–222
Han Q, Bartels A, Cheng X, Meyer A, An YC, Hsieh TF, Xiao W (2019) Epigenetics regulates reproductive development in plants. Plants (Basel) 8(12):564
Hehenberger E, Kradolfer D, Kohler C (2012) Endosperm cellularization defines an important developmental transition for embryo development. Development 139(11):2031–2039
Hsieh TF, Ibarra CA, Silva P, Zemach A, Eshed-Williams L, Fischer RL, Zilberman D (2009) Genome-wide demethylation of Arabidopsis endosperm. Science 324(5933):1451–1454
Hsieh TF, Shin J, Uzawa R, Silva P, Cohen S, Bauer MJ, Hashimoto M, Kirkbride RC, Harada JJ, Zilberman D, Fischer RL (2011) Regulation of imprinted gene expression in Arabidopsis endosperm. Proc Natl Acad Sci USA 108(5):1755–1762
Ibarra CA, Feng X, Schoft VK, Hsieh TF, 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
Ingouff M, Rademacher S, Holec S, Soljic L, Xin N, Readshaw A, Foo SH, Lahouze B, Sprunck S, Berger F (2010) Zygotic resetting of the HISTONE 3 variant repertoire participates in epigenetic reprogramming in Arabidopsis. Curr Biol 20(23):2137–2143
Jackson JP, Lindroth AM, Cao XF, Jacobsen SE (2002) Control of CpNpG DNA methylation by the KRYPTONITE histone H3 methyltransferase. Nature 416(6880):556–560
Jiang FW, Feng ZH, Liu HL, Zhu J (2015) Involvement of plant stem cells or stem cell-like cells in dedifferentiation. Front Plant Sci 6:1028
Jullien PE, Mosquna A, Ingouff M, Sakata T, Ohad N, Berger F (2008) Retinoblastoma and its binding partner MSI1 control imprinting in Arabidopsis. PLoS Biol 6(8):e194
Jullien PE, Susaki D, Yelagandula R, Higashiyama T, Berger F (2012) DNA methylation dynamics during sexual reproduction in Arabidopsis thaliana. Curr Biol 22(19):1825–1830
Kehr J, Kragler F (2018) Long distance RNA movement. New Phytol 218(1):29–40
Kim MY, Ono A, Scholten S, Kinoshita T, Zilberman D, Okamoto T, Fischer RL (2019) DNA demethylation by ROS1a in rice vegetative cells promotes methylation in sperm. Proc Natl Acad Sci USA 116(19):9652–9657
Kinoshita T, Yadegari R, Harada JJ, Goldberg RB, Fischer RL (1999) Imprinting of the MEDEA polycomb gene in the Arabidopsis endosperm. Plant Cell 11(10):1945–1952
Kinoshita H, Shi Y, Sandefur C, Meisner LF, Chang CS, Choon A, Reznikoff CR, Bova GS, Friedl A, Jarrard DF (2000) Methylation of the androgen receptor minimal promoter silences transcription in human prostate cancer. Cancer Res 60(13):3623–3630
Kinoshita T, Miura A, Choi Y, Kinoshita Y, Cao X, Jacobsen SE, Fischer RL, Kakutani T (2004) One-way control of FWA imprinting in Arabidopsis endosperm by DNA methylation. Science 303(5657):521–523. https://doi.org/10.1126/science.1089835
Kohler C, Hennig L, Spillane C, Pien S, Gruissem W, Grossniklaus U (2003) The Polycomb-group protein MEDEA regulates seed development by controlling expression of the MADS-box gene PHERES1. Genes Dev 17:1540–1553
Kohler C, Page DR, Gagliardini V, Grossniklaus U (2005) The Arabidopsis thaliana MEDEA Polycomb group protein controls expression of PHERES1 by parental imprinting. Nat Genet 37(1):28–30
Lafon-Placette C, Kohler C (2014) Embryo and endosperm, partners in seed development. Curr Opin Plant Biol 17:64–69
Lafon-Placette C, Kohler C (2016) Endosperm-based postzygotic hybridization barriers: developmental mechanisms and evolutionary drivers. Mol Ecol 25(11):2620–2629
Laurent L, Wong E, Li G, Huynh T, Tsirigos A, Ong CT, Low HM, Sung KWK, Rigoutsos I, Loring J, Wei CL (2010) Dynamic changes in the human methylome during differentiation. Genome Res 20(3):320–331
Lin JY, Le BH, Chen M, Henry KF, Hur J, Hsieh TF, Chen PY, Pelletier JM, Pellegrini M, Fischer RL, Harada JJ, Goldberg RB (2017) Similarity between soybean and Arabidopsis seed methylomes and loss of non-CG methylation does not affect seed development. P Natl Acad Sci USA 114(45):E9730–E9739
Lister R, Mukamel EA, Nery JR, Urich M, Puddifoot CA, Johnson ND, Lucero J, Huang Y, Dwork AJ, Schultz MD, Yu M, Tonti-Filippini J, Heyn H, Hu SJ, Wu JC, Rao A, Esteller M, He C, Haghighi FG, Sejnowski TJ, Behrens MM, Ecker JR (2013) Global epigenomic reconfiguration during mammalian brain development. Science 341(6146):629
Makarevich G, Villar CB, Erilova A, Kohler C (2008) Mechanism of PHERES1 imprinting in Arabidopsis. J Cell Sci 121(Pt 6):906–912
Malagnac F, Bartee L, Bender J (2002) An Arabidopsis SET domain protein required for maintenance but not establishment of DNA methylation. EMBO J 21:6842–6852
Martinez G, Panda K, Kohler C, Slotkin RK (2016) Silencing in sperm cells is directed by RNA movement from the surrounding nurse cell. Nat Plants 2(4):1–8
Martinez G, Wolff P, Wang ZX, Moreno-Romero J, Santos-Gonzalez J, Conze LL, DeFraia C, Slotkin RK, Kohler C (2018) Paternal easiRNAs regulate parental genome dosage in Arabidopsis. Nat Genet 50(2):193
Miki D, Zhang WX, Zeng WJ, Feng ZY, Zhu JK (2018) CRISPR/Cas9-mediated gene targeting in Arabidopsis using sequential transformation. Nat Commun 9:1967
Moreno-Romero J, Jiang H, Santos-Gonzalez J, Kohler C (2016) Parental epigenetic asymmetry of PRC2-mediated histone modifications in the Arabidopsis endosperm. EMBO J 35(12):1298–1311
Moreno-Romero J, Del Toro-De Leon G, Yadav VK, Santos-Gonzalez J, Köhler C (2019) Epigenetic signatures associated with imprinted paternally expressed genes in the Arabidopsis endosperm. Genome Biol 20:41
Palovaara J, Saiga S, Wendrich JR, Hofland NV, van Schayck JP, Hater F, Mutte S, Sjollema J, Boekschoten M, Hooiveld GJ, Weijers D (2017) Transcriptome dynamics revealed by a gene expression atlas of the early Arabidopsis embryo. Nat Plants 3(11):894–904
Park K, Frost JM, Adair AJ, Kim DM, Yun H, Brooks JS, Fischer RL, Choi Y (2016a) Optimized methods for the isolation of Arabidopsis female central cells and their nuclei. Mol Cells 39(10):768–775
Park K, Kim MY, Vickers M, Park JS, Hyun Y, Okamoto T, Zilberman D, Fischer RL, Feng X, Choi Y, Scholten S (2016b) DNA demethylation is initiated in the central cells of Arabidopsis and rice. Proc Natl Acad Sci USA 113(52):15138–15143
Park JS, Frost JM, Park K, Ohr H, Park GT, Kim S, Eom H, Lee I, Brooks JS, Fischer RL, Choi Y (2017) Control of DEMETER DNA demethylase gene transcription in male and female gamete companion cells in Arabidopsis thaliana. Proc Natl Acad Sci USA 114(8):2078–2083
Patil V, Ward RL, Hesson LB (2014) The evidence for functional non-CpG methylation in mammalian cells. Epigenetics 9(6):823–828
Pillot M, Baroux C, Vazquez MA, Autran D, Leblanc O, Vielle-Calzada JP, Grossniklaus U, Grimanelli D (2010) Embryo and endosperm inherit distinct chromatin and transcriptional states from the female gametes in Arabidopsis. Plant Cell 22(2):307–320
Shirane K, Toh H, Kobayashi H, Miura F, Chiba H, Ito T, Kono T, Sasaki H (2013) Mouse oocyte methylomes at base resolution reveal genome-wide accumulation of non-CpG methylation and role of DNA methyltransferases. Plos Genet 9(4):e1003439
Shulse CN, Cole BJ, Ciobanu D, Lin JY, Yoshinaga Y, Gouran M, Turco GM, Zhu YW, O’Malley RC, Brady SM, Dickel DE (2019) High-throughput single-cell transcriptome profiling of plant cell types. Cell Rep 27(7):2241
Slotkin RK, Vaughn M, Borges F, Tanurdzic M, Becker JD, Feijo JA, Martienssen RA (2009) Epigenetic reprogramming and small RNA silencing of transposable elements in pollen. Cell 136(3):461–472
Stroud H, Do T, Du J, Zhong X, Feng S, Johnson L, Patel DJ, Jacobsen SE (2014) Non-CG methylation patterns shape the epigenetic landscape in Arabidopsis. Nat Struct Mol Biol 21(1):64–72
Tsukahara S, Kobayashi A, Kawabe A, Mathieu O, Miura A, Kakutani T (2009) Bursts of retrotransposition reproduced in Arabidopsis. Nature 461(7262):423–426
Villar CBR, Erilova A, Makarevich G, Trosch R, Kohler C (2009) Control of PHERES1 imprinting in Arabidopsis by direct tandem repeats. Mol Plant 2(4):654–660
Yelagandula R, Stroud H, Holec S, Zhou K, Feng S, Zhong X, Muthurajan UM, Nie X, Kawashima T, Groth M, Luger K, Jacobsen SE, Berger F (2014) The histone variant H2A.W defines heterochromatin and promotes chromatin condensation in Arabidopsis. Cell 158(1):98–109
Yu B, Dong X, Gravina S, Kartal O, Schimmel T, Cohen J, Tortoriello D, Zody R, Hawkins RD, Vijg J (2017) Genome-wide, single-cell DNA methylomics reveals increased non-CpG methylation during human oocyte maturation. Stem Cell Rep 9(1):397–407
Zemach A, Zilberman D (2010) Evolution of eukaryotic DNA methylation and the pursuit of safer sex. Curr Biol 20(17):R780–R785
Zemach A, McDaniel IE, Silva P, Zilberman D (2010) Genome-wide evolutionary analysis of eukaryotic DNA methylation. Science 328(5980):916–919
Zhang H, Lang Z, Zhu JK (2018a) Dynamics and function of DNA methylation in plants. Nat Rev Mol Cell Biol 19(8):489–506
Zhang SS, Wang DF, Zhang HJ, Skaggs MI, Lloyd A, Ran D, An LL, Schumaker KS, Drews GN, Yadegari R (2018b) FERTILIZATION-INDEPENDENT SEED-polycomb repressive complex 2 plays a dual role in regulating type I MADS-Box genes in early endosperm development. Plant Physiol 177(1):285–299
Zhang CQ, Hung YH, Rim HJ, Zhang DP, Frost JM, Shin H, Jang HS, Liu F, Xiao WY, Iyer LM, Aravind L, Zhang XQ, Fischer RL, Huh JH, Hsieh TF (2019) The catalytic core of DEMETER guides active DNA demethylation in Arabidopsis. Proc Natl Acad Sci USA 116(35):17563–17571
Zhu JK (2009) Active DNA demethylation mediated by DNA glycosylases. Annu Rev Genet 43:143–166
Acknowledgements
The work was supported by the National Research Foundation (NRF) of Korea (2020R1A2C2009382) and the Next Generation BioGreen 21 Program Grant (PJ013127).
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KP conceived and designed the review paper, and wrote the first draft; SL designed the review paper and added a new idea; HY collected the relevant literature; YC critically evaluated the manuscript.
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Park, K., Lee, S., Yoo, H. et al. DEMETER-mediated DNA Demethylation in Gamete Companion Cells and the Endosperm, and its Possible Role in Embryo Development in Arabidopsis. J. Plant Biol. 63, 321–329 (2020). https://doi.org/10.1007/s12374-020-09258-2
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DOI: https://doi.org/10.1007/s12374-020-09258-2