Transposition of the maize controlling element “Activator” in tobacco
- 1 July 1986
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 83 (13), 4844-4848
- https://doi.org/10.1073/pnas.83.13.4844
Abstract
Transposition of the maize autonomous controlling element Activator (Ac) and a nonautonomous derivative, Dissociation (Ds), was investigated in tobacco cells. Tobacco protoplasts were transformed with Ti-plasmid vectors that contained Ac or Ds flanked by short maize wx gene sequences. The structures of the elements and surrounding wx and T-DNA sequences were investigated in nine Ac and five Ds tobacco transformants by digestion with restriction enzymes, Southern blotting, and hybridization using specific probes. In four of the nine Ac transformed lines, Ac had excised from its original position in the T-DNA and inserted at new sites in the tobacco genome. Ds did not excise from its original T-DNA position in any of the transformants examined. Two Ac fragments and cellular flanking sequences were cloned from a line of tobacco in which Ac had transposed. Fragments, comprised of sequences flanking the newly integrated Ac elements, were used as hybridization probes to normal tobacco DNA and to the tobacco DNA from which they were isolated. The Ac copies were integrated into repetitive tobacco DNA sequences. Two tobacco fragments containing empty Wx donor sites were cloned from the DNA of the same Ac transformant and sequenced. Both sequences are among the types of excision products observed to result from Ac-catalyzed excision events in maize. Our results indicate that the maize controlling element Ac is capable of self-catalyzed transposition in tobacco.This publication has 13 references indexed in Scilit:
- DNA modification of a maize transposable element correlates with loss of activity.Proceedings of the National Academy of Sciences, 1986
- Cloning of the bronze locus in maize by a simple and generalizable procedure using the transposable controlling element Activator ( Ac )Proceedings of the National Academy of Sciences of the United States of America, 1984
- The nucleotide sequence of the maize controlling element ActivatorCell, 1984
- Molecular Analysis of Ds Controlling Element Mutations at the Adh1 Locus of MaizeScience, 1984
- Molecular identification and isolation of the Waxy locus in maizeCell, 1983
- Isolation of the transposable maize controlling elements Ac and DsCell, 1983
- A new pair of M13 vectors for selecting either DNA strand of double-digest restriction fragmentsGene, 1982
- CHROMOSOME ORGANIZATION AND GENIC EXPRESSIONPublished by Cold Spring Harbor Laboratory ,1951