Oligonucleotide-directed gene repair in wheat using a transient plasmid gene repair assay system

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• 作者：Chongmei Dong ; Peter Beetham ; Kate Vincent and Peter Sharp
• 关键词：Gene repair ; GFP ; Immature embryo ; Plasmid DNA ; Single ; stranded DNA oligonucleotide ; Wheat
• 刊名：Plant Cell Reports
• 出版年：2006
• 出版时间：May 2006
• 年：2006
• 卷：25
• 期：5
• 页码：457-465
• 全文大小：374 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Cell Biology
  Plant Sciences
  Biotechnology
  Plant Biochemistry
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-203X

文摘

Oligonucleotide-directed gene repair is a potential technique for agricultural trait modification in economically important crops. However, large variation in the repair frequencies among the scientific reports indicates that there are many factors influencing the repair process. We report here a transient assay system using GFP as a reporter for testing the efficiency of plasmid DNA repair in cultured wheat cells. This assay showed that osmotic medium supplemented with 2,4-D increased the oligo-targeting frequency, and that the repair of a point mutation was more efficient than repair of a single base deletion mutation in cultured scutellum cells of immature wheat embryos. This study provides the first evidence that oligonucleotide-directed mutagenesis is applicable to regenerable cultured wheat scutellum cells.