Genetics, Vol 142, 907-914, Copyright © 1996


INVESTIGATIONS

Hermes, a Functional Non-Drosophilid Insect Gene Vector From Musca domestica

D. A. O'Brochta, W. D. Warren, K. J. Saville and P. W. Atkinson
Center for Agricultural Biotechnology, University of Maryland Biotechnology Institute, College Park, Maryland 20742

Hermes is a short inverted repeat-type transposable element from the house fly, Musca domestica. Using an extra-chromosomal transpositional recombination assay, we show that Hermes elements can accurately transpose in M. domestica embryos. To test the ability of Hermes to function in species distantly related to M. domestica we used a nonautonomous Hermes element containing the Drosophila melanogaster white (w(+)) gene and created D. melanogaster germline transformants. Transgenic G(1) insects were recovered from 34.6% of the fertile G(0) adults developing from microinjected w(-) embryos. This transformation rate is comparable with that observed using P or hobo vectors in D. melanogaster, however, many instances of multiple-element insertions and large clusters were observed. Genetic mapping, Southern blotting, polytene chromosome in situ hybridization and DNA sequence analyses confirmed that Hermes elements were chromosomally integrated in transgenic insects. Our data demonstrate that Hermes elements transpose at high rates in D. melanogaster and may be an effective gene vector and gene-tagging agent in this species and distantly related species of medical and agricultural importance.


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