Distorted genetic segregation of the transposon mPing at the long arm of chromosome 12 in rice
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- Horibata Akira
- Faculty of Biology-Oriented Science and Technology, Kinki University
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- Kakikubo Yoshihiro
- Faculty of Biology-Oriented Science and Technology, Kinki University
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- Kato Tsuneo
- Faculty of Biology-Oriented Science and Technology, Kinki University
書誌事項
- タイトル別名
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- Distorted genetic segregation of the transposon <i>mPing</i> at the long arm of chromosome 12 in rice
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抄録
A class II transposable element, mPing exists in the rice genome ubiquitously and can transpose even in ordinary cultivation conditions. A copy of mPing was identified at the long arm of chromosome 12. In reciprocal backcrossed F1s between a heterozygote and a homozygote without mPing, the male gametes with this mPing from heterozygotes were transmitted to the next generation at a lower frequency than those without mPing, resulting in distorted genetic segregation in self-fertilized progenies, as well as in F1s after backcrossing. Pollens with mPing tended to germinate on stigma less than those without mPing. These results, however, could not explain the lower transmission of male gametes with mPing. In addition, no excision of mPing was observed in a homozygote. Thus, it was suggested that male gametes with mPing were eliminated partly from pollination to fertilization by negative competition against male gametes without mPing. Less formation of microspores with mPing in meiosis could also be a cause for the distorted segregation, although this could not be examined. At least two ORFs, whose functions have not been identified, are located near this mPing. It is plausible that either of these ORFs or both are necessary for the normal functioning of male gametes.
収録刊行物
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- Breeding Science
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Breeding Science 65 (4), 340-344, 2015
日本育種学会
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詳細情報 詳細情報について
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- CRID
- 1390001204721930240
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- NII論文ID
- 130005097104
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- NII書誌ID
- AA11317194
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- ISSN
- 13473735
- 13447610
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- NDL書誌ID
- 026715083
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可