title: Oligonucleotide-directed gene repair in wheat using a transient plasmid gene repair assay system.
abstract: 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.
authors.affiliation: Plant Breeding Institute, University of Sydney, PMB 11, Camden, NSW, 2570, Australia. chongd@camden.usyd.edu.au
authors.forename: Chongmei
authors.initials: C
authors.lastname: Dong
authors.forename: Peter
authors.initials: P
authors.lastname: Beetham
authors.forename: Kate
authors.initials: K
authors.lastname: Vincent
authors.forename: Peter
authors.initials: P
authors.lastname: Sharp
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000494:pharmacology; D000595:Amino Acid Sequence; D020137:Base Pair Mismatch; D002478:Cells, Cultured; D003470:Culture Media; D004260:DNA Repair; D017930:Genes, Reporter; D049452:Green Fluorescent Proteins / Q000235:genetics / Q000378:metabolism; D008969:Molecular Sequence Data; D016297:Mutagenesis, Site-Directed; D009841:Oligonucleotides / Q000235:genetics*; D009995:Osmosis; D010957:Plasmids; D017354:Point Mutation; D012639:Seeds / Q000235:genetics; D017384:Sequence Deletion; D014908:Triticum / Q000196:embryology / Q000235:genetics* / Q000378:metabolism
chemical_list: D003470:Culture Media; D009841:Oligonucleotides; D049452:Green Fluorescent Proteins; D015084:2,4-Dichlorophenoxyacetic Acid