Inhibition of abscission layer formation by an interaction of two seed-shattering loci, sh4 and qSH3, in rice
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- Inoue Chizuru
- Laboratory of Plant Breeding, Graduate School of Agricultural Science, Kobe University
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- Htun Than Myint
- Laboratory of Plant Breeding, Graduate School of Agricultural Science, Kobe University
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- Inoue Kanako
- Laboratory of Cell Function and Structure, Graduate School of Agricultural Science, Kobe University
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- Ikeda Ken-ichi
- Laboratory of Cell Function and Structure, Graduate School of Agricultural Science, Kobe University
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- Ishii Takashige
- Laboratory of Plant Breeding, Graduate School of Agricultural Science, Kobe University
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- Ishikawa Ryo
- Laboratory of Plant Breeding, Graduate School of Agricultural Science, Kobe University
書誌事項
- タイトル別名
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- Inhibition of abscission layer formation by an interaction of two seed-shattering loci, <i>sh4</i> and <i>qSH3</i>, in rice
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Loss of seed shattering was one of the key phenotypic changes selected for in the domestication of many crop species. Asian cultivated rice, Oryza sativa L., was domesticated from its wild ancestor, O. rufipogon, and three seed-shattering loci, qSH1, sh4 and qSH3, have been reported to be involved in the loss of seed shattering in cultivated rice. Here, we analysed the seed-shattering behaviour of wild rice using introgression lines carrying the cultivated alleles from O. sativa Nipponbare in the genetic background of wild rice, O. rufipogon W630. We first carried out fine mapping of the qSH3 region and found that the qSH3 locus is localized in an 850-kb region on chromosome 3. We then analysed the effects of the Nipponbare alleles at sh4 and qSH3 on seed-shattering behaviour in wild rice, as a mutation at qSH1 was not commonly found in rice cultivars. Seed-shattering behaviour did not change in the two types of introgression line independently carrying the Nipponbare-homozygous alleles at sh4 or qSH3 in the genetic background of wild rice. However, the introgression lines having the Nipponbare-homozygous alleles at both sh4 and qSH3 showed a reduction in the degree of seed shattering. Histological and scanning electron microscopy analyses revealed that abscission layer formation was inhibited around the vascular bundles in these lines. Since the qSH3 region, as well as sh4, has been shown to be under artificial selection, the interaction of mutations at these two loci may have played a role in the initial loss of seed shattering during rice domestication.
収録刊行物
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- Genes & Genetic Systems
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Genes & Genetic Systems 90 (1), 1-9, 2015
日本遺伝学会
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詳細情報 詳細情報について
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- CRID
- 1390001205474133632
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- NII論文ID
- 130005083380
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- NII書誌ID
- AA11077421
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- DOI
- 10.1266/ggs.90.1
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- ISSN
- 18805779
- 13417568
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- NDL書誌ID
- 026498638
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- PubMed
- 26119661
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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
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可