Genetic differences within the japonica rice variety, Koshihikari, indicated by transposons
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- Kishima Yuji
- Laboratory of Plant Breeding, Research Faculty of Agriculture, Hokkaido University
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- Hotta Yuka
- Laboratory of Plant Breeding, Research Faculty of Agriculture, Hokkaido University
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- Ishiguro Seiya
- Laboratory of Plant Breeding, Research Faculty of Agriculture, Hokkaido University
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- Yamamura Kazuteru
- Laboratory of Plant Breeding, Research Faculty of Agriculture, Hokkaido University
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- Hanawa Akira
- Japan Isotope Analysis Laboratory, Inc.
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- Naito Satoshi
- The Consumer Economics Research Institute, Inc.
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- Sano Yoshio
- Laboratory of Plant Breeding, Research Faculty of Agriculture, Hokkaido University
Bibliographic Information
- Other Title
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- トランスポゾンを指標にしたコシヒカリ品種内の遺伝的差異
- トランスポゾン オ シヒョウ ニ シタ コシヒカリ ヒンシュ ナイ ノ イデンテキ サイ
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Abstract
Little is known about genetic variation, which follows the establishment of plant variety, and its accumulation process. Here, we collected samples from a total of 86 populations of a popular japonica rice variety, Koshihikari, from 15 prefectures in Japan and investigated genetic variation among these samples. In plants, insertion sites of transposable elements are of strong indications of genetic polymorphisms among different strains of the same species. Particularly, rice genomes contain at least seven potentially active transposable elements that could give rise to de novo insertions and mutations. In this study, transposon display (TD) experiments were performed with four transposable elements, which showed different banding profiles between the parents of Koshihikari, Norin 1 and Norin 22. In TDs involving three elements, 82 samples from the 86 populations examined showed common patterns, implying that these populations share an identity as Koshihikari. In contrast, TD involving the transposon mPing exhibited a number of polymorphisms among the 82 populations. These polymorphisms include population specific bands, which may result from recent de novo transpositions of mPing, indicating the activity of mPing in Koshihikari. Interestingly, the other polymorphisms due to two bands, A1 and A23, are able to classify Koshihikari populations into two types; the two bands distinguish Niigata or non-Niigata (Fukui) types where the samples originated. The A1 and A23 bands are derived from the Koshihikari parents, Norin 1 or Norin 22, respectively. The results suggest that the Koshihikari variety consists of two major populations (Niigata and Fukui types) with partially different genome structures that might be established during the breeding processes.<br>
Journal
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- Breeding Research
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Breeding Research 12 (3), 81-86, 2010
Japanese Society of Breeding
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Details
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- CRID
- 1390282679446078848
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- NII Article ID
- 10030690483
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- NII Book ID
- AA11317194
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- ISSN
- 13481290
- 13447629
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- NDL BIB ID
- 10834454
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed