生物技术通报 ›› 2013, Vol. 0 ›› Issue (1): 116-122.

• 研究报告 • 上一篇    下一篇

四倍体刺槐枝条韧皮部总蛋白质双向电泳体系建立及应用

张胜1 ,赵忠1,2,刘昭军1 ,张博勇1,2,宗建伟1 ,张玲玲 1   

  1. 1. 西北农林科技大学林学院,杨陵 712100 ;2. 西北农林科技大学 西部环境与生态教育部重点实验室,杨凌 712100
  • 收稿日期:2013-01-31 修回日期:2013-01-31 出版日期:2013-01-30 发布日期:2013-01-30
  • 作者简介:张胜, 男, 硕士研究生, 研究方向: 苗木快繁技术及植物不定根形成过程中的差异蛋白组学研究; E-mail: zhangsheng8630@sina.com
  • 基金资助:
    国家自然科学基金项目(30972352)

Establishment and Application of Two-dimensional Gel Electrophoresis for Proteome from the Phloem of Tetraploid Robinia pseudoacacia

Zhang Sheng1, Zhao Zhong1,2,Liu Zhaojun1,Zhang Boyong1,2Zong Jianwei1, Zhang Lingling1,   

  1. 1. College of Forestry,Northwest A & F University,Yangling 712100;
    2. Ministry of Education Key Laboratory of Environment and Ecology in Western China,Northwest A & F University,Yangling 712100
  • Received:2013-01-31 Revised:2013-01-31 Published:2013-01-30 Online:2013-01-30

摘要: 采用TCA/ 丙酮法对四倍体刺槐枝段韧皮部全蛋白质进行提取,通过对IPG 胶条pH 梯度、分离胶浓度的选择,上样量、等电聚焦条件的优化,建立起四倍体刺槐枝段韧皮部蛋白质双向电泳体系。研究结果表明:采用TCA/ 丙酮法提取四倍体刺槐枝段韧皮部全蛋白质,选用pH4-7 的17 cm IPG 胶条,考马斯亮蓝染色上样量550 μg,等电聚焦IEF 聚焦总伏小时数从60 000 Vh 提高到80 000 Vh,并采用12% 的分离胶对四倍体刺槐枝段韧皮部全蛋白进行双向电泳,能得到背景清晰、蛋白质点数相对较多,分离度高且重复性好的电泳图谱。利用建立的体系进行双向电泳分离蛋白质,能直接挖点送质谱分析。采用该体系分析四倍体刺槐硬枝扦插生根愈伤组织阶段蛋白质表达差异,共筛选出83 个差异蛋白质点,其中上调蛋白15 个,新产生蛋白22 个,下调蛋白22 个,缺失表达24 个。

关键词: 四倍体刺槐 , 韧皮部 , 双向电泳 , 优化方法 , 差异蛋白质分析

Abstract: This paper used the method of TCA/acetone to extract all proteins of phloem in tetraploid Robinia pseudoacacia. A twodimensionalelectrophoresis system for proteomic analysis of tetraploid Robinia pseudoacacia was established by optimizing the parametersincluding the pH gradient of IPG strip, the gel concentration, the loading quantity of sample and isoelectric focusing conditions. The resultsshowed that :Use the TCA/acetone method to extract all phloem protein of tetraploid Robinia pseudoacacia, choose 17 cm IPG strip withpH4-7, load protein samples of 550 μg, followed staining with colloidal Coomassie Brilliant Blue and use 12% SDS-PAGE for tetraploid Robiniapseudoacacia phloem total proteins in two-dimensional electrophoresis while isoelectric focusing IEF hours increased from 60 000 Vh to 80 000Vh can get a clear background with more protein points, high resolution and good repeatability. Using the established system of two-dimensionalelectrophoresis can dug protein points from the gel directly and send them to mass spectrometry. Use this system to analysis differences ofhardwood cuttings rooting callus phase protein expression in tetraploid Robinia pseudoacacia. Filter out 83 differential protein spots, amongwhich, 15 were higher, 22 were novel, 22 were lower and 24 were lack of expression.