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园艺学报 ›› 2016, Vol. 43 ›› Issue (12): 2315-2324.doi: 10.16420/j.issn.0513-353x.2015-0569

• 果树 • 上一篇    下一篇

葡萄VvACO1的表达及在拟南芥和番茄中的遗传转化

佟少明,席海秀,艾可筠,侯和胜*   

  1. (辽宁师范大学生命科学学院,辽宁省植物生物工程重点实验室,辽宁大连 116081)
  • 出版日期:2016-12-25 发布日期:2016-12-25

Expression of VvACO1 Gene in Grape and Genetic Transformation in Arabidopsis and Tomato

TONG Shao-ming,XI Hai-xiu,AI Ke-jun,and HOU He-sheng*   

  1. (College of Life Sciences,Liaoning Normal University,Key Laboratory of Plant Biotechnology of Liaoning Province,Dalian,Liaoning 116081,China)
  • Online:2016-12-25 Published:2016-12-25

摘要:

采用RT-PCR方法从葡萄(Vitis vinifera)叶片中克隆到1个ACC氧化酶(ACC Oxidase,ACO)基因,命名为VvACO1。序列分析表明,VvACO1的开放阅读框长度为957 bp,编码318个氨基酸,具有亮氨酸拉链、Fe2+结合基序和抗坏血酸结合位点等ACO蛋白的典型结构域;与烟草和番茄的ACO蛋白的相似度分别为87%和84%。组织特异性及乙烯诱导表达结果表明,VvACO1在葡萄叶片、卷须、幼茎、果实、花序、须根以及腋芽等组织中差异表达,并受到乙烯利的诱导上调表达。过表达VvACO1的番茄开花期及果实成熟期提前,过表达VvACO1的拟南芥叶片光合效率和叶绿素a的荧光强度明显下降。

关键词: 葡萄, VvACO1, 表达分析, 番茄, 拟南芥

Abstract:

ACC oxidase is one of the key rate-limiting enzymes which functioned in the biosynthesis of ethylene. An ACO gene designated as VvACO1 was cloned from leaves in grape by RT-PCR. The open reading frame of VvACO1 was 957 bp encoding 318 amino acids. The VvACO1 protein contained typical conserved domain with leucine zipper,Fe2+ and ascorbate binding motif. The sequences of VvACO1 shared similarity of 87% and 84% with the ACOs from tobacco and tomato respectively. The transcriptional level of VvACO1 was different in different tissues or organs of grape and up-regulated by ethephon. Over-expression of VvACO1 in tomato showed earlier flowering and fruit ripening. Meanwhile,transgenic Arabidopsis showed that over-expression of VvACO1 caused decreased photosynthetic efficiency and Chl. a fluorescence intensity.

Key words: Vitis vinifera, VvACO1, expression analysis, tomato;Arabidopsis

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