中国水稻科学 ›› 2011, Vol. 25 ›› Issue (6): 575-579.DOI: 10.3969/j.issn.10017216.2011.06.002

• 研究报告 • 上一篇    下一篇

抑制水稻隐花色素基因OsCRY1a表达对水稻农艺性状的影响

李毓1,2庄伟建1,3, * 王乃元2洪国琴1戴飞3   

  1. 1福建农林大学 作物科学学院, 福建 福州 350002; 2 福建农林大学 作物遗传育种与综合利用教育部重点实验室,  福建 福州  350002; 3 福建省分子与细胞生物学重点实验室,    福建 福州 350002;
  • 收稿日期:2011-01-03 修回日期:2011-01-27 出版日期:2011-11-10 发布日期:2011-11-10
  • 通讯作者: 庄伟建1,3, *
  • 基金资助:

    福建省科技计划重点资助项目(2008I01021117);国家863计划资助项目(2007AA10Z181)。

Effects of Suppressing  OsCRY1a Gene Expression on Rice Agronomic Traits

LI  Yu 1,2,ZHUANG  Weijian 1,3,* ,WANG Naiyuan 2,HONG Guoqin 1,DAI Fei 3   

  1. 1 College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China;2 Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China;3 Key Laboratory of Molecular and Cellular Biology,  Fuzhou 350002, China;
  • Received:2011-01-03 Revised:2011-01-27 Online:2011-11-10 Published:2011-11-10
  • Contact: ZHUANG Weijian1,3,*

摘要: 利用已公布的OsCRY1a基因的序列设计引物,扩增部分基因片段,构建RNAi植物表达载体并转化水稻,导致该基因表达水平下降和功能缺失。根据转基因植株重要农艺性状的表现,分析该基因的功能。结果表明,抑制OsCRY1a基因的表达,水稻开花期推迟16 d,株高和粒长明显增加,而其他重要农艺性状如剑叶长、宽和穗长等无明显变化。

关键词: 水稻, 隐花色素基因, OsCRY1a, 农艺性状, 基因表达

Abstract: Using primers designed according to the published sequence of   OsCRY1a gene,  part of the gene fragment  was obtained by PCR and  a RNAi expression vector  was constructed. The vector was then introduced into rice,  leading to the downregulation  of the expression level and lossoffunction of the gene. Based on the performance of the transgenic plants, the functions of OsCRY1a was analyzed and deduced. The results indicated that suppressing the expression of OsCRY1a    retarded  flowering for 16 d  with    the plant height and grain length significantly increased   while  other important agronomic traits    remained unchanged  apparently.

Key words: rice, cryptochrome gene;OsCRY1a;agronomic trait, gene expression

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