Journalartikel

Jahr der Veröffentlichung: 2012

Seiten: 9348-9353

Zeitschrift: Proceedings of the National Academy of Sciences

Bandnummer: 109

Heftnummer: 24

DOI Link: https://doi.org/10.1073/pnas.1203352109

URL: http://europepmc.org/abstract/med/22647610

Verlag: National Academy of Sciences

Abstract: 

Here the first reproductive sterility system for the tephritid fruit fly pest, Anastrepha suspensa, is presented, based on lethality primarily limited to embryos heterozygous for a conditional lethal transgene combination. This tetracycline (Tet)-suppressible system uses a driver construct having the promoter from the newly isolated embryo-specific A. suspensa serendipity alpha gene linked to the Tet-transactivator. This was used to drive expression of a phosphomutated variant of the pro-apoptotic cell death gene, hid, from A. ludens, that was isolated, based on its identity to A. suspensa hid. The Alhid(Ala2) variant was shown to have the highest cell death activity in an in vitro A. suspensa cell death assay compared to the orthologous genes Ashid, Dmhid, and the variant Dmhid(Ala5). These cell death assays also allowed a determination of the most-efficient driver-effector cassette combinations for use in A. suspensa transformants, resulting in two hybrid strains exhibiting 100% lethality. One strain was 96% lethal in embryos in the absence of tetracycline, with none surviving past the first larval instar, which is critical for pests that are most damaging in late-larval stages. We demonstrate that the isolation and in vitro validation of species-specific promoters and lethal effector genes can greatly improve the efficiency of creating high-performance conditional lethality strains that may be extended to other insect pest species.

Harvard-Zitierstil: Schetelig, M. and Handler, A. (2012) Strategy for enhanced transgenic strain development for embryonic conditional lethality in Anastrepha suspensa, Proceedings of the National Academy of Sciences, 109(24), pp. 9348-9353. https://doi.org/10.1073/pnas.1203352109

APA-Zitierstil: Schetelig, M., & Handler, A. (2012). Strategy for enhanced transgenic strain development for embryonic conditional lethality in Anastrepha suspensa. Proceedings of the National Academy of Sciences. 109(24), 9348-9353. https://doi.org/10.1073/pnas.1203352109