Abstract
Three DNA fragments encoding part of a reverse transcriptase similar to that of Ty1-copia retrotransposons were isolated from suspension-cultured cells of the liverwort Marchantia paleacea var. diptera. Digestion of total DNA with methylation-sensitive and -insensitive isoschizomers revealed that, like those of the subtelomeric region, CpG sequences in retrotransposon genes were hypermethylated. The methylation status and expression of these retrotransposons was less affected by 5-azadeoxycytidine treatment compared to the subtelomeric region, which was considerably demethylated.
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Abbreviations
- 5-azadC :
-
5-Azadeoxycytidine
- MS :
-
Murashige and Skoog medium
References
Apt KE, Grossman AR (1993) Characterization and transcript analysis of the major phycobiliprotein subunit genes from Aglaothamnion neglectum (Rhodophyta). Plant Mol Biol 21:27–38
Belanger FC, Hepburn AG (1990) The evolution of CpNpG methylation in plants. J Mol Evol 30:26–35
Finnegan EJ, Genger RK, Peacock WJ, Dennis ES (1998) DNA methylation in plants. Annu Rev Plant Physiol Plant Mol Biol 49:223–247
Foss HM, Roberts CJ, Claeys KM, Selker EU (1993) Abnormal chromosome behavior in Neurospora mutants defective in DNA methylation. Science 262:1737–1741
Gruenbaum Y, Naveh-Many T, Cedar H, Razin A (1981) Sequence specificity of methylation in higher plant DNA. Nature 292:860–862
Hattman S, Kenny C, Berger L, Pratt K (1978) Comparative study of DNA methylation in three unicellular eucaryotes. J Bacteriol 135:1156–1157
Hirochika H, Hirochika R (1993) Ty1-copia group retrotransposons as ubiquitous components of plant genomes. Jpn J Genet 68:35–46
Hirochika H, Okamoto H, Kakutani K (2000) Silencing of retrotransposons in Arabidopsis and reactivation by the ddm1 mutation. Plant Cell 12:357–368
Kakutani T, Munakata K, Richards EJ, Hirochika H (1999) Meiotically and mitotically stable inheritance of DNA hypomethylation induced by ddm1 mutation of Arabidopsis thaliana. Genetics 151:831–838
Kuwano K, Aruga Y, Saga N (1996) Cryopreservation of clonal gametophytic thalli of Porphyra (Rhodohyta). Plant Sci 116:117–124
Murashige T, Skoog F (1962) A revised medium for rapid growth and bioassay with tobacco tissue culture. Physiol Plant 15:473–497
Nakano Y, Steward N, Sekine M, Kusano T, Sano H (2000) A tobacco NtMET1 cDNA encoding a DNA methyltransferase: molecular characterization and abnormal phenotypes of transgenic tobacco plants. Plant Cell Physiol 41:448–457
Nikaido I, Asamizu E, Nakajima M, Nakamura Y, Saga N, Tabata S (2000) Generation of 10,154 expressed sequence tags from a leafy gametophyte of a marine red alga, Porphyra yezoensis. DNA Res 7:223–227
Palmgren G, Mattsson O, Okkels FT (1990) Employment of hydrolytic enzymes in the study of the level of DNA methylation. Biochim Biophys Acta 1049:293–297
Ronemus MJ, Galbiati M, Tichnor C, Chen J, Dellaporta SL (1996) Demethylation-induced developmental pleiotropy in Arabidopsis. Science 273:654–657
Selker EU, Tountas NA, Cross SH, Margolin BS, Murphy JG, Bird AP, Feitag M (2003) The methylated component of the Neurospora crassa genome. Nature 422:893–897
Steward N, Kusano T, Sano H (2000) Expression of ZmMET1, a gene encoding a DNA methyltransferase from maize, is associated not only with DNA replication in actively proliferating cells, but also with altered DNA methylation status in cold-stressed quiescent cells. Nucleic Acids Res 28:3250–3259
Suzuki T, Takio S, Satoh T (1998) Light-dependent expression in liverwort cells of chlL/N and chlB identified as chloroplast genes involved in chlorophyll synthesis in the dark. J Plant Physiol 152:31–37
Takio S, Ikuta K, Satoh Y, Satoh T (1993) Photosynthetic properties of dark-bleached cells of the newly established line from the liverwort, Marchantia paleacea var. diptera. J Plant Physiol 142:6–11
Takio S, Takase N, Satoh T (1999) Hypermethylation of CpNpG and CpG sequences flanking telomeres in the liverwort, Marchantia paleacea var. diptera. J Plant Physiol 154:341–345
Zhou Y, Cambareri EB, Kinsey JA (2001) DNA methylation inhibits expression and transposition of the Neurospora Tad retrotransposon. Mol Genet Genomics 265:748–754
Acknowledgements
The authors would like to thank Dr. M. Yamaguchi at Hiroshima University, Japan, for providing thalli of M. paleacea var. diptera. We also thank to Dr. N. Saga at Hokkaido University, Japan, for providing thalli of P. yezoensis. This work was supported by a grant from the Program for Promotion of Basic Research Activities for Innovative Biosciences (PROBRAIN; to H.T.).
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Communicated by P. Ozias-Akins
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Fukuda, T., Sakai, M., Takano, H. et al. Hypermethylation of retrotransposons in the liverwort Marchantia paleacea var. diptera . Plant Cell Rep 22, 594–598 (2004). https://doi.org/10.1007/s00299-003-0739-x
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DOI: https://doi.org/10.1007/s00299-003-0739-x