中国水稻科学 ›› 2013, Vol. 27 ›› Issue (4): 359-364.DOI: 10.3969/j.issn.1001-7216.2013.04.004

• 研究报告 • 上一篇    下一篇

水稻幼苗叶色温敏感突变体的鉴定及其基因定位

江少华1 ,周华1 ,林冬枝1, * ,董彦君1, * ,叶胜海2 ,张小明2   

  1. 1上海师范大学 生命与环境科学学院 植物遗传与功能基因研究室, 上海 200234; 2浙江省农业科学院,   杭州 310021;
  • 收稿日期:2012-09-25 修回日期:2013-01-16 出版日期:2013-07-10 发布日期:2013-07-10
  • 通讯作者: 林冬枝1, * ,董彦君1, *
  • 基金资助:

    国家自然科学基金资助项目(30971552); 上海市科委项目(09DJ1400505, 0939191200,10DZ2271800, 12ZR1422000);上海市教委项目(J50401)。

Identification and Gene Mapping of a Thermosensitive Leafcolor Mutant at Seedling Stage in Rice

JIANG Shaohua1, ZHOU Hua1, LIN Dongzhi 1 ,* , DONG Yanjun 1, * , YE Shenghai 2 , ZHANG Xiaoming 2   

  1. 1 Laboratory of Plant Genetics and Functional Genes, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China; 2 Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China;
  • Received:2012-09-25 Revised:2013-01-16 Online:2013-07-10 Published:2013-07-10
  • Contact: LIN Dongzhi1 ,*, DONG Yanjun1, *

摘要: 在粳稻嘉花1号水稻品种经60Co γ辐照后代中筛选到一个幼苗叶色温敏感突变体tsl11。与野生型嘉花1号相比,该突变体在20℃下,幼苗叶色呈黄色;叶绿素a、叶绿素b和类胡萝卜素含量分别下降94.6%、88.2%和91.5%;且电镜结果显示叶绿体内部结构不完整。而在高温(32℃)条件下突变体的叶色表型、光合色素含量和叶绿体发育与野生型基本一致,显示出明显的温度敏感性。遗传分析表明,该突变体叶色性状受1对隐性核基因控制,暂命名为tsl11(thermosensitive leafcolor11)。以该突变体与籼稻培矮64S杂交,构建4928株突变型F2,利用SSR和InDel分子标记将tsl11基因定位于水稻第11染色体上的ID14506与ID14653之间的147 kb的区间内。

null

关键词: 温敏感, 叶色突变体, 叶绿素含量, 基因定位

Abstract: A thermosensitive leafcolor mutant, tsl11, was selected from the progeny of the japonica  rice variety Jiahua 1 by 60Co γradiation. Compared with the wildtype parent Jiahua 1 at 20℃, the mutant was characterized yellowseedling,decreased contents of chlorophyll a,chlorophyll b and carotenoid by 94.6%, 88.2% and 91.5%,respectively.Simultaneously, the result of electron microscopic observation revealed that the structure of chloroplasts in the tsl11 was imperfect seriously. However,the mutant was similar to wild type at high temperatures(32℃).These results indicated that the mutant was obviously thermosensitive. Genetic analysis showed that the mutant trait was controlled by a single nuclear recessive gene, tentatively designated as tsl11.  Moreover, the mapping population of 4928 F2 mutant individuals derived from Pei’ai 64S/tsl11 were constructed, then using SSR and InDel markers, the tsl11 gene was finally mapped to a region of 147 kb between ID14506 and ID14653 on chromosome 11.

Key words: thermosensitive, leafcolor mutant, chlorophyll content, gene mapping

中图分类号: