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林业科学 ›› 2008, Vol. 44 ›› Issue (9): 48-53.doi: 10.11707/j.1001-7488.20080909

• 论文 • 上一篇    下一篇

平邑甜茶谷氨酸受体同源基因的克隆、表达及转化 *

主春福1,2彭福田1 1,2 姜远茂1 李光杰1

  

  1. (1. 山东农业大学园艺科学与工程学院 国家作物生物学重点实验室 泰安271018;2. 山东省沂水县果茶服务中心 沂水276400)
  • 收稿日期:2007-11-02 修回日期:1900-01-01 出版日期:2008-09-25 发布日期:2008-09-25
  • 通讯作者: 彭福田

Cloning, Expression and Transformation of hGLR Gene in Malus hupehensis var. pingyiensis

Zhu Chunfu 1,2,png Futian1,png Jing1,2,jang Yuanmao1,liGuangjie 1

  

  1. (1. State Key Laboratory of Crop Biology College of Horticulture Science and Engineering, Shandong Agricultural University Tai'an 271018;2. Yishui Fruit and Tea Service Center of Shandong Province Yishui 276400)
  • Received:2007-11-02 Revised:1900-01-01 Online:2008-09-25 Published:2008-09-25

摘要:

根据GenBank中检索到的苹果谷氨酸受体基因的EST序列,采用RACE方法克隆平邑甜茶谷氨酸受体同源基因MhGLR。该基因全长3 600 bp,编码946个氨基酸,推测分子质量为107.09 ku。将MhGLR编码氨基酸与其他已知的谷氨酸受体氨基酸进行同源性比较,发现MhGLR属于谷氨酸受体第三亚家族 (GLR3),且与拟南芥AtGLR36的同源关系最近,故将其命名为MhGLR (GenBank 注册号: EF432572)。亲水性分析表明,MhGLR包含有动物离子型谷氨酸受体(iGLuRs)的6个具有重要功能的保守结构域。荧光定量PCR结果显示,MhGLR36在根、茎、叶中均有所表达,且在叶中的表达量最高;L-谷氨酸和IBA处理能够诱导根中MhGLR的表达。成功构建了35S hGLR反义表达载体,并对‘皇家嘎拉' 苹果进行农杆菌介导的遗传转化。

关键词: 平邑甜茶, MhGLR, 因克隆, 表达分析, 转化

Abstract:

MhGLR gene was identified from Malus hupehensis var. pingyiensisby RACE on the basis of apple expressed sequence tag (EST) database. MhGLR cDNA was 3 600 bp in length and encoded a protein molecule with 946 amino acids, whose molecular mass was estimated of 107.09 ku. Sequence alignment of MhGLR with other members of the GLR (glutamate receptor) family showed that MhGLR was closely related to clade Ⅲ Arabidopsis GLRs and was closest to AtGLR36. Therefore, we named it MhGLR(GenBank accession No.(EF432572). Hydropathy analysis indicated that MhGLR36 contained six signature domains of animal ionotropic GluRs. Quantitative realtime PCR analysis demonstrated that MhGLR as expressed in roots,stems and leaves.The expression level in leaves was higher than that in roots and stems. Lglutamate and IBA treatments were ableto induce the expression of MhGLR36 in roots. To study the function of [MhGLR we introduced the antisense MhGLRunder the control of 35S promoter of Cauliflower mosaic virus into Malus domestica cv. Royal Gala plants.

Key words: Malus hupehensis var. pingyiensis, [MhGLR ene, gene cloning, expression, transformation