Fine mapping of a pistilloid-stamen (PS) gene on the short arm of chromosome 1 in rice

文献类型： 外文期刊

第一作者： Li, Yunfeng

作者： Li, Yunfeng;Yang, Zhenglin;Zhong, Bingqiang;Xie, Rong;Ren, Maozhi;Luo, Da;He, Guanghua

作者机构：

关键词： rice (Oryza sativa L. subsp indica);pistilloid-stamen mutant (ps mutant);molecular marker;simple sequence repeat (SSR);gene mapping

期刊名称：GENOME （ 影响因子：2.166； 五年影响因子：2.474 ）

ISSN： 0831-2796

年卷期： 2006 年 49 卷 8 期

页码：

收录情况： SCI

摘要： A novel floral organ mutant of rice (Oryza sativa L. subsp. indica), termed pistilloid-stamen (ps) here, has flowers with degenerated lemma and palea, with some stamens transformed into pistils and pistil-stamen chimeras. Genetic analysis confirmed that the ps trait is controlled by a single recessive gene. F-2 and F-3 segregation populations derived from PS ps heterozygote crossed with Oryza sativa subsp. indica 'Luhui-17' (PS PS) were used for molecular mapping of the gene using simple sequence repeat (SSR) markers. With 97 recessive individuals from an F-2 segregation population, the ps locus was preliminarily mapped 6.2 cM distal to marker RM6324 and 3.1 cM proximal to marker RM6340 in the terminal region of the short arm of chromosome 1. With a large F-3 segregation population, the gene was fine-mapped between markers RM6470 and RM1141, at distances of 0.10 and 0.03 cM to each marker, respectively. The position of the ps gene was finally located within a 20 kb physical region containing 3 annotated putative genes. One of them, encoding a protein with a single C2H2 zinc-finger domain, may be the candidate gene for PS.

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