Characterization of the repetitive sequences in a 200-kb region around the rice waxy locus: diversity of transposable elements and presence of veiled repetitive sequences
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概要
- 論文の詳細を見る
Repetitive genomic sequences might have various structural features and properties distinct from those of the known transposable elements (TE). Here, the content and properties of the repetitive sequences present in a 200-kb region around the rice waxy locus were analyzed using the available rice genomic database. In our previous Southern blotting analysis, 70% of the segments in this region showed smeared patterns, but according to the present database analysis, the proportion of repetitive sequences in this region was only 15%. The repetitive segments in this 200-kb region comprised 75 repetitive sequences that we classified into 46 subfamilies: 21 subfamilies were known TEs or repetitive sequences and 25 subfamilies consisted of newly identified TEs or novel types of repetitive sequences. The region contains no long terminal repeat (LTR) retrotransposable elements, but miniature inverted repeat transposable elements (MITEs) constituted a major class among the elements identified. These MITEs showed remarkable structural divergence: 12 elements were found to be new members of known MITE superfamilies, while five elements had novel terminal structures, and did not belong to any known TE families. Interestingly, about 10% of the repetitive sequences, including virus-like sequences did not have any of the usual characteristics of TEs, suggesting that a certain proportion of repetitive sequences that might not share the transpositional mechanisms of known elements are dispersed in the compact rice genome.
- 日本遺伝学会の論文
- 2002-04-01
著者
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Azuma Takayuki
The Institute Of Scientific And Industrial Research Osaka University
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Azuma Takayuki
Laboratory Of Plant Breeding Faculty Of Agriculture Hokkaido University
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Sano Y
Hokkaido Univ. Hokkaido Jpn
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Nagano Hironori
Laboratory of Plant Breeding, Faculty of Agriculture, Hokkaido University
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Kishima Yuji
Laboratory of Plant Breeding, Faculty of Agriculture, Hokkaido University
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Sano Yoshio
Laboratory of Plant Breeding, Faculty of Agriculture, Hokkaido University
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KUNII Motoyuki
Laboratory of Plant Breeding, Faculty of Agriculture, Hokkaido University
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Nagano Hironori
Laboratory Of Plant Breeding Faculty Of Agriculture Hokkaido University
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Sano Yoshio
Laboratory Of Plant Breeding Graduate School Of Agriculture Hokkaido University
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Kishima Y
Hokkaido Univ. Hokkaido Jpn
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Kishima Yuji
Laboratory Of Plant Breeding Graduate School Of Agriculture Hokkaido University
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Kunii Motoyuki
Laboratory Of Plant Breeding Faculty Of Agriculture Hokkaido University
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