TITLE

Organisation and expression of a cluster of yolk protein genes in the Australian sheep blowfly, Lucilia cuprina

AUTHOR(S)
Scott, Maxwell; Atapattu, Asela; Schiemann, Anja; Concha, Carolina; Henry, Rebecca; Carey, Brandi-lee; Belikoff, Esther; Heinrich, Jörg; Sarkar, Abhimanyu
PUB. DATE
January 2011
SOURCE
Genetica;Jan2011, Vol. 139 Issue 1, p63
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The Australian sheep blowfly Lucilia cuprina is a major pest for the Australian and New Zealand sheep industries. With the long-term aim of making a strain of L. cuprina suitable for a genetic control program, we previously developed a tetracycline-repressible female lethal genetic system in Drosophila. A key part of this system is a female-specific promoter from a yolk protein ( yp) gene controlling expression of the tetracycline-dependent transactivator (tTA). Here we report the sequence of a 14.2 kb genomic clone from L. cuprina that contains a cluster of three complete yp genes and one partial yp gene. The Lcyp genes are specifically expressed in females that have received a protein meal. A bioinformatic analysis of the promoter of one of the yp genes ( LcypA) identified several putative binding sites for DSX, a known regulator of yp gene expression in other Diptera. A transgenic strain of L. cuprina was made that contained the LcypA promoter driving the expression of the Escherichia coli lacZ reporter gene. Transgenic females express high levels of β-galactosidase after a protein meal. Thus the LcypA promoter could be used to obtain female-specific expression of tTA in transgenic L. cuprina.
ACCESSION #
57639752

 

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