Abstract
Overexpression of the Activator (Ac) transposase gene in Arabidopsis thaliana resulted in a minimal germinal transposition frequency of 27% in which independent Dissociation (Ds) transposition events were observed. Molecular analysis of 45 F1 generation Ac/Ds plants indicated that high rates of somatic excision had occurred, and independent germinal insertions were identified in F2 generation progeny plants. A tandem cauliflower mosaic virus (CaMV) promoter fused to two different Ac coding sequences significantly increased the rate of Ds transposition. The CaMV-Ac fusions activated single and multiple copies of two different Ds elements, DsDHFR and Ds35S-1, and reciprocal crosses resulted in similar transposition frequencies. The improved rate of independent germinal transposition observed makes Arabidopsis an ideal system for insertional mutagenesis.
MeSH Terms
Base Sequence
Blotting, Southern
Cloning, Molecular
DNA Transposable Elements
Gene Expression
Genetic Vectors
Molecular Sequence Data
Mutagenesis, Insertional
Nucleotidyltransferases/metabolism
Oligodeoxyribonucleotides/chemistry
Plants/genetics
RNA, Messenger/genetics
Rhizobium/genetics
Transposases
Zea mays/genetics
Chemicals
DNA Transposable Elements
Oligodeoxyribonucleotides
RNA, Messenger
Nucleotidyltransferases
Transposases
Authors & Affiliations
7 authors, click to expand affiliations / ORCID
Grevelding C
Max-Planck-Institut für Züchtungsforschung, Cologne, Federal Republic of Germany.
Becker D
Kunze R
von Menges A
Fantes V
Schell J
Masterson R
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