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High-resolution mapping revealed a 1.3-Mbp genomic inversion in Ssi1, a dominant semidwarf gene in rice (Oryza sativa)

文献类型: 外文期刊

作者: Miura, K. 1 ; Wu, J. 2 ; Sunohara, H. 1 ; Wu, X. 3 ; Matsumoto, T. 2 ; Matsuoka, M. 1 ; Ashikari, M. 1 ; Kitano, H. 1 ;

作者机构: 1.Nagoya Univ, Biosci & Biotechnol Ctr, Nagoya, Aichi 4648601, Japan

2.Natl Inst Agrobiol Sci, Tsukuba, Ibaraki 3058602, Japan

3.Shandong Acad Agr Sci, Vegetable Res Inst, Jinan 250100, Peoples R China

4.Japan Soc Promot Sci, Chiyoda Ku, Tokyo 1028471, Japan

关键词: Oryza sativa; semidwarf; dm-type; dominant gene

期刊名称:PLANT BREEDING ( 影响因子:1.832; 五年影响因子:1.956 )

ISSN: 0179-9541

年卷期: 2009 年 128 卷 1 期

页码:

收录情况: SCI

摘要: Dwarf or semidwarf characters are an important trait for crop breeding as they provide lodging resistance. The rice mutant line DMF-1 has a dm-type semidwarf phenotype and high-lodging resistance controlled by the dominant gene, Short second internode 1 (Ssi1). To elucidate the mechanism of reducing culm length in DMF-1, we sought to identify the Ssi1 gene by positional cloning using the chromosome segment substitution line as a crossing parent. As a result of high-resolution mapping, we found a 1.3-Mbp genomic inversion and a newly arranged gene in the Ssi1 locus. In this study, we report the high-resolution mapping and physical mapping of Ssi1. We also discuss the possible function of a novel rearranged Ssi1 gene for the dominant dm-type semidwarf phenotype.

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