DNA methylation and histone modification in onion chromosomes
スポンサーリンク
概要
- 論文の詳細を見る
Onion, Allium cepa, is a model plant for experimental observation of somatic cell division, whose mitotic chromosome is extremely large, and contains the characteristic terminal heterochromatin. Epigenetic status of the onion chromosome is a matter of deep interest from a molecular cytogenetic point of view, because epigenetic marks regulate chromatin structure and gene expression. Here we examined chromosomal distribution of DNA methylation and histone modification in A. cepa in order to reveal the chromatin structure in detail. Immunodetection of 5-methylcytosine (5mC) and in situ nick-translation analysis showed that onion genomic DNA was highly methylated, and the methylated CG dinucleotides were distributed in entire chromosomes. In addition, distributions of histone methylation codes, which occur in close association with DNA methylation, were similar to those of other large genome species. From these results, a highly heterochromatic and less euchromatic state of large onion chromosomes were demonstrated at an epigenetic level.
- 日本遺伝学会の論文
著者
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Suzuki Go
Division of Natural Science, Osaka Kyoiku University
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Suzuki G
Div. Of Natural Sci. Osaka Kyoiku Univ.
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Suzuki Go
Division Of Natural Science Osaka Kyoiku University
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Suzuki G
Division Of Natural Science Osaka Kyoiku University
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Yamamoto Maki
Faculty Of Health Sciences For Welfare Kansai University Of Welfare Sciences
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Mukai Yasuhiko
Division Of Natural Sciences Department Of Arts And Sciences Osaka Kyoiku University
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Shiomi Maho
Division of Natural Science, Osaka Kyoiku University
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Morihana Sayuri
Division of Natural Science, Osaka Kyoiku University
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Shiomi Maho
Division Of Natural Science Osaka Kyoiku University
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Morihana Sayuri
Division Of Natural Science Osaka Kyoiku University
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