生物技术通报 ›› 2016, Vol. 32 ›› Issue (4): 68-73.doi: 10.13560/j.cnki.biotech.bull.1985.2016.04.008

• 技术与方法 • 上一篇    下一篇

普通小麦幼苗叶肉细胞原生质体分离方法的优化

席海秀,艾可筠,佟少明   

  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,大连 116081
  • 收稿日期:2015-06-28 出版日期:2016-04-25 发布日期:2016-04-26
  • 基金资助:
    席海秀,女,硕士研究生,研究方向:植物分子生物学;E-mail:haixiuxi@yeah.net

The Optimization of Isolation Method for Mesophyll Protoplast from Common Wheat(Triticum aestivum)Seedlings

XI Hai-xiu, AI Ke-jun, TONG Shao-ming   

  1. School of Life Sciences,Liaoning Normal University,The Key Laboratory of Plant Biotechnology of Liaoning Province,Dalian 116081
  • Received:2015-06-28 Published:2016-04-25 Online:2016-04-26

摘要: 以7日龄小麦幼苗的叶肉细胞为材料,采用正交试验分析了纤维素酶浓度、离析酶浓度、酶解时间、甘露醇浓度对原生质体分离时的产量和活力的影响;采用瞬时表达技术通过PEG-Ca2+介导法转化小麦的原生质体,分析了PEG浓度对转化效率的影响。结果表明,小麦叶片原生质体分离的最佳条件为纤维素酶1.5%,离析酶 0.75%,甘露醇0.4 mol/L,酶解时间3 h,得到的原生质体的产量可达到7.2×106个/g·FW,活力超过95%;瞬时表达实验结果表明,在25% PEG浓度下,小麦原生质体的转化效率最高。

关键词: 普通小麦, 原生质体, 分离, 瞬时表达

Abstract: By orthogonal test,we analyzed the effects of concentrations of cellulose,macerozyme,and mannitiol as well as the time of enzyme digestion on the productivity and vitality during the isolation of protoplast from 7 days of wheat seedling mesophyll. Further,the transient expression technology was employed to analyze the effects of PEG concentration on the transformation efficiency by PEG-Ca2+-mediated transformation of mesophyll. The results showed that the optimal condition for isolating the mesophyll from wheat leaves was:1.5% of cellulase,0.75% of macerozyme,0.4 mol/L mannitol,and 3 h of enzyme digestion;the protoplast yield was 7.2×106 cells/g·FW,the vitality was more than 95%. The results from the transient expression technology revealed that transformation efficiency was the highest under 25% PEG.

Key words: common wheat, protoplast, isolation, transient expression