RNA-mediated transposition of the tobacco retrotransposon Tnt1 in Arabidopsis thaliana.
The tobacco (Nicotiana tabacum) retrotransposon Tnt1 was introduced into Arabidopsis thaliana. In this heterologous host plant species, Tnt1 undergoes an RNA-mediated transposition and creates a 5 bp duplication at the insertion sites. This is the first report of transposition of a retrotransposon after introduction into a heterologous host species. Tnt1 transposed during in vitro regeneration of transformed A.thaliana, but no transposition event was detected as happening in T2 and T3 generation plants. Newly synthesized copies of Tnt1 can integrate into coding regions of the host DNA. Our results open up the possibility of using Tnt1 as a new tool for insertional mutagenesis and functional analysis of plant genomes, in addition to the strategies of T-DNA and transposon tagging.
Lucas
H
H
INRA, Laboratoire de Biologie Cellulaire, Versailles, France.
Feuerbach
F
F
Kunert
K
K
Grandbastien
M A
MA
Caboche
M
M
D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics*; D001483:Base Sequence; D015152:Blotting, Northern; D015139:Blotting, Southern; D004251:DNA Transposable Elements / Q000235:genetics*; D015321:Gene Rearrangement / Q000235:genetics*; D005819:Genetic Markers; D005822:Genetic Vectors; D018745:Genome, Plant; D008540:Meiosis; D008969:Molecular Sequence Data; D030821:Plants, Genetically Modified; D010947:Plants, Toxic; D016133:Polymerase Chain Reaction; D018749:RNA, Plant / Q000235:genetics*; D011993:Recombinant Fusion Proteins / Q000096:biosynthesis; D017422:Sequence Analysis, DNA; D014018:Tissue Distribution; D014026:Nicotiana / Q000235:genetics*; D014158:Transcription, Genetic; D014170:Transformation, Genetic
D004251:DNA Transposable Elements; D005819:Genetic Markers; D018749:RNA, Plant; D011993:Recombinant Fusion Proteins