Subtropical Plant Science ›› 2018, Vol. 47 ›› Issue (04): 305-311.DOI: 10.3969/j.issn.1009-7791.2018.04.001

• Plant physiology, biochemistry and molecular biology •     Next Articles

Expression of PP2C Related Genes in Dormancy Process of Pyrus pyrifolia

WANG Hui-quan, LI Liang, YU Zhi-xiong, YUAN Ya-fang, WU Shao-hua   

  1. (1.Fujian Vocational College of Agriculture, Fuzhou 350119, Fujian China; 2.Institute of Natural Products of Horticultural Plants, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian China)
  • Received:2018-08-20 Revised:2018-09-05 Online:2018-12-30 Published:2018-12-30
  • Contact: WU Shao-hua

PP2C相关基因在砂梨休眠进程中的表达分析

王会全,李亮,余志雄,袁亚芳,吴少华   

  1. (1.福建农业职业技术学院,福建 福州 350119;2.福建农林大学园艺植物天然产物研究所,福建 福州 350002)
  • 通讯作者: 吴少华
  • 作者简介:王会全,博士,讲师,从事果树生理及分子生物学研究。
  • 基金资助:
    高等学校博士学科点专项科研基金(20113515110011);福建省科技计划重点项目(2012N005);福建农业职业技术学院青年项目(2016JS0004)

Abstract: Plant Protein Phosphatase 2C (PP2C), as a widespread protein phosphatase in plants, plays an important role in plant signal transduction pathway. Expression of PP2C related genes in dormancy process of Pyrus pyrifolia was analyzed. PP2C-related genes of P. pyrifolia were highly homologous to PP2C genes of Prunus. Different PP2C genes played different roles in dormancy of pear bud. PP2C-37-1、PP2C-37-2、PP2C-51-1 and PP2C-24 might regulate endodormancy, PP2C-78 gene might has a significant regulatory effect on release of endodormancy. ABA signal transduction complex was formed by ABA receptor PYR/PYL protein, PP2C protein and SnRK2 (protein kinase) protein, and then acted on transcription factor ABF, which resulted in regulating dormancy of pear flower bud.

Key words: Pyrus pyrifolia, PP2C, dormancy, expression analysis

摘要: 对植物蛋白磷酸酶2C(PP2C)相关基因在砂梨Pyrus pyrifolia品系休眠进程中的表达进行分析。结果表明,砂梨PP2C相关基因与李属PP2C基因高度同源。在梨花芽休眠过程中不同PP2C基因调控的作用不同, PP2C-37-1、PP2C-37-2、PP2C-51-1、PP2C-24四个基因与内休眠调控有关,而PP2C-78对于内休眠的解除则有明显作用。PP2C蛋白磷酸酶相关基因注释到植物激素信号转导途径显示,ABA受体PYR/PYL蛋白与PP2C蛋白以及SnRK2(蛋白激酶)蛋白形成ABA信号转导的复合物可以作用于转录因子ABF从而调控梨花芽的休眠。

关键词: 砂梨, PP2C, 休眠, 表达分析

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