@article{long_fulkerson_breese_hernandez_davis_melton_chandran_butler_jiang_estes_2014, title={A comparison of midline and tracheal gene regulation during drosophila development}, volume={9}, number={1}, journal={PLoS One}, author={Long, S. K. R. and Fulkerson, E. and Breese, R. and Hernandez, G. and Davis, C. and Melton, M. A. and Chandran, R. R. and Butler, N. and Jiang, L. and Estes, P.}, year={2014} } @article{vasquez_syed_estes_leal_gould_2013, title={Specificity of the receptor for the major sex pheromone component in Heliothis virescens}, volume={13}, DOI={10.1673/031.013.16001}, abstractNote={Abstract In a previous study, the Drosophila melanogaster OR67dGAL4;UAS system was used to functionally characterize the receptor for the major component of the sex pheromone in the tobacco budworm, Heliothis virescens Fabricius (Lepidoptera: Noctuidae), HvOR13. Electrophysiological and behavioral assays showed that transgenic flies expressing HvOR13 responded to (Z)-11-hexadecenal (Z11-16:Ald). However, tests were not performed to determine whether these flies would also respond to secondary components of the H. virescens sex pheromone. Thus, in this study the response spectrum of HvOR13 expressed in this system was examined by performing single cell recordings from odor receptor neuron in trichoid T1 sensilla on antennae of two Or67dGAL4 [1]; UAS-HvOR13 lines stimulated with Z11-16:Ald and six H. virescens secondary pheromone components. Fly courtship assays were also performed to examine the behavioral response of the Or67dGAL4[1]; UAS-HvOR13 flies to Z11-16:Ald and the secondary component Z9-14:Ald. Our combined electrophysiological and behavioral studies indicated high specificity and sensitivity of HvOR13 to Z11-16:Ald. Interestingly, a mutation leading to truncation in the HvOR13 C-terminal region affected but did not abolish pheromone receptor response to Z11-16:Ald. The findings are assessed in relationship to other HvOR13 heterologous expression studies, and the role of the C-terminal domain in receptor function is discussed. A third line expressing HvOR15 was also tested but did not respond to any of the seven pheromone components.}, journal={Journal of Insect Science (Tucson, AZ)}, author={Vasquez, G. M. and Syed, Z. and Estes, P. A. and Leal, W. S. and Gould, Fred}, year={2013} } @article{fulkerson_estes_2011, title={Common motifs shared by conserved enhancers of Drosophila midline glial genes}, volume={316B}, number={1}, journal={Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution}, author={Fulkerson, E. and Estes, P. A.}, year={2011}, pages={61–75} } @article{zhang_wheatley_fulkerson_tapp_estes_2011, title={Mastermind mutations generate a unique constellation of midline cells within the drosophila CNS}, volume={6}, number={10}, journal={PLoS One}, author={Zhang, Y. and Wheatley, R. and Fulkerson, E. and Tapp, A. and Estes, P. A.}, year={2011} } @article{estes_fulkerson_zhang_2008, title={Identification of motifs that are conserved in 12 Drosophila species and regulate midline glia vs. neuron expression}, volume={178}, ISSN={["0016-6731"]}, DOI={10.1534/genetics.107.080440}, abstractNote={Abstract Functional complexity of the central nervous system (CNS) is reflected by the large number and diversity of genes expressed in its many different cell types. Understanding the control of gene expression within cells of the CNS will help reveal how various neurons and glia develop and function. Midline cells of Drosophila differentiate into glial cells and several types of neurons and also serve as a signaling center for surrounding tissues. Here, we examine regulation of the midline gene, wrapper, required for both neuron–glia interactions and viability of midline glia. We identify a region upstream of wrapper required for midline expression that is highly conserved (87%) between 12 Drosophila species. Site-directed mutagenesis identifies four motifs necessary for midline glial expression: (1) a Single-minded/Tango binding site, (2) a motif resembling a pointed binding site, (3) a motif resembling a Sox binding site, and (4) a novel motif. An additional highly conserved 27 bp are required to restrict expression to midline glia and exclude it from midline neurons. These results suggest short, highly conserved genomic sequences flanking Drosophila midline genes are indicative of functional regulatory regions and that small changes within these sequences can alter the expression pattern of a gene.}, number={2}, journal={GENETICS}, author={Estes, Patricia and Fulkerson, Eric and Zhang, Yi}, year={2008}, month={Feb}, pages={787–799} }