华北农学报 ›› 2014, Vol. 29 ›› Issue (3): 11-15. doi: 10.7668/hbnxb.2014.03.003

所属专题: 玉米 生物技术

• 论文 • 上一篇    下一篇

玉米CMS-C不育系及保持系差异基因的克隆与表达分析

王继玥, 易洪杨, 汪生庆, 曹墨菊   

  1. 四川农业大学 玉米研究所, 教育部作物基因资源与遗传改良重点实验室, 农业部西南玉米生物学及遗传育种重点实验室, 四川 成都 611130
  • 收稿日期:2014-03-13 出版日期:2014-06-28
  • 通讯作者: 曹墨菊(1965-),女,河北魏县人,教授,博士,主要从事玉米雄性不育研究。
  • 作者简介:王继玥(1984-),男,四川南充人,在读博士,主要从事玉米雄性不育研究。王继玥、易洪杨为同等贡献作者。
  • 基金资助:
    国家自然科学基金项目(30971794)

Cloning and Expression Analysis of Differential Genes Between C-Type Cytoplasmic Sterile Line and Its Maintainer Line in Maize

WANG Ji-yue, YI Hong-yang, WANG Sheng-qing, CAO Mo-ju   

  1. Maize Research Institute, Sichuan Agricultural University, Key Laboratory of Crop Genetic Resource and Improvement, Ministry of Education, Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, Chengdu 611130, China
  • Received:2014-03-13 Published:2014-06-28

摘要: 以玉米不育系C48-2及保持系N48-2为材料,利用PCR和RT-PCR技术克隆了嵌合orf118-b 并研究了 cox2 转录本的结构变化。orf118-b 是玉米C48-2线粒体基因组特有的嵌合 orf,并能在单核期花药中特异表达。cox2* 仅在N48-2单核期花药中特异表达,cox2* cox2 基因转录本GRM ZM5G862955_T01的新注释,其5'UTR区域被延长。利用Real-Time qPCR检测了 cdpk 在不育系及保持系雄穗发育的花粉母细胞时期、四分体时期、单核期和双核期的基因表达水平。结果表明,cdpk 在C48-2的母细胞时期、四分体时期、双核期上调表达,在C48-2的单核期下调表达。这些发现为进一步探索玉米CMS-C核质互作导致花粉败育的分子机制提供参考。

关键词: 玉米, CMS-C, 嵌合ORF, 差异表达

Abstract: orf118-b and cox2* were cloned from sterile line C48-2 and it maintainer line N48-2 in maize by PCR and RT-PCR.orf118-b is a specific chimeric open reading frame in mitochondria genome of CMS-C line. cox2* was special transcript of cox2 only in N48-2, based on the maize genomic database, 5'UTR region of the transcript was extended comparison to the existed annotation.Expression of cdpk between C-Type cytoplasmic male sterility line and maintainer line at the pollen mother cells(PMCs) stage, the tetrad stage, the uninucleate stage and the binuclear stage were determined using Real-Time PCR.The results showed that cdpk was up-regulated in C48-2 at mother cell stage, tetrad stage, the binuclear stage, but was down-regulated in C48-2 at binuclear uninucleate stage.This results provide foundation for further explaining molecular mechanism of CMS-C in maize.

Key words: Maize, CMS-C, Chimeric ORF, Differential expression

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引用本文

王继玥, 易洪杨, 汪生庆, 曹墨菊. 玉米CMS-C不育系及保持系差异基因的克隆与表达分析[J]. 华北农学报, 2014, 29(3): 11-15. doi: 10.7668/hbnxb.2014.03.003.

WANG Ji-yue, YI Hong-yang, WANG Sheng-qing, CAO Mo-ju. Cloning and Expression Analysis of Differential Genes Between C-Type Cytoplasmic Sterile Line and Its Maintainer Line in Maize[J]. journal1, 2014, 29(3): 11-15. doi: 10.7668/hbnxb.2014.03.003.

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