浙江农业学报 ›› 2018, Vol. 30 ›› Issue (4): 607-613.DOI: 10.3969/j.issn.1004-1524.2018.04.12

• 园艺科学 • 上一篇    下一篇

甜樱桃PacAMR1基因的克隆及表达分析

李京霞1, 夏惠1, 2, 吕秀兰1, 2, 王进1, 2, 梁东1, 2, *   

  1. 1.四川农业大学 园艺学院,四川 成都 611130;
    2.四川农业大学 果蔬研究所,四川 成都 611130
  • 收稿日期:2017-10-07 出版日期:2018-04-20 发布日期:2018-04-19
  • 通讯作者: 梁东,E-mail:liangeast@sina.com.cn
  • 作者简介:李京霞(1995—),女,河南原阳人,本科生,主要从事果树生物技术研究。E-mail:1136024913@qq.com
  • 基金资助:
    四川省教育厅应用基础重点项目(16ZA0024)

Cloning and expression analysis of PacAMR1 gene in sweet cherry

LI Jingxia1, XIA Hui1, 2, LYU Xiulan1, 2, WANG Jin1, 2, LIANG Dong1, 2, *   

  1. 1. College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China;
    2. Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2017-10-07 Online:2018-04-20 Published:2018-04-19

摘要: 以甜樱桃果实为材料,利用反转录聚合酶链式反应(RT-PCR)技术,获得了参与调控甜樱桃AsA生物合成的关键基因——PacAMR1。序列同源性分析发现,该基因编码的氨基酸序列与其他植物AMR1蛋白具有较高的同源性。实时荧光定量RT-PCR的结果表明,随着果实发育成熟,PacAMR1基因的表达量逐渐上升,而果实中的AsA含量则是在果实发育早期较高。PacAMR1基因的表达量在幼叶中最低,而在老叶中表达量最高;但相反的是,AsA含量在幼叶中最高,而在老叶中最低。这些结果表明,PacAMR1基因的表达可能参与了AsA生物合成的负调控。

关键词: 抗坏血酸, AMR1基因, 调控, 甜樱桃

Abstract: Ascorbic acid (AsA) biosynthesis in plants occurs through a complex network. Regulation about this network is largely uncharacterized. PacAMR1, a gene that regulates pathway on AsA biosynthesis was identified from sweet cherry by reverse transcription-polymerase chain reaction (RT-PCR). The results of homology analysis showed that PacAMR1 protein shares high sequence similarity with that of other plants. Real-time PCR analysis showed that the relative expression level of PacAMR1 increased gradually with the development of fruit, however the AsA content was higher in early phage of fruit development. As leaves aged, PacAMR1transcripts accumulated with a concomitant increase. In contrast, the AsA content was highest in young leaves and lowest in old leaves. These results indicated that PacAMR1 appears to play an important role in modulating AsA biosynthesis in sweet cherry by negative regulating.

Key words: ascorbic acid, AMR1 gene, regulation, sweet cherry

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