Expression divergence of chemosensory genes between drosophila sechellia and its sibling species and its implications for host shift

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• dc.contributor.author Shiao, Meng-Shinca
• dc.contributor.author Chang, Jia-Ming, 1978-ca
• dc.contributor.author Fan, Wen-Langca
• dc.contributor.author Jade Lu, Mei-Yehca
• dc.contributor.author Notredame, Cedricca
• dc.contributor.author Fang, Shuca
• dc.contributor.author Kondo, Rumica
• dc.contributor.author Li, Wen-Hsiungca
• dc.date.accessioned 2015-11-12T15:50:20Z
• dc.date.available 2015-11-12T15:50:20Z
• dc.date.issued 2015
• dc.description.abstract Drosophila sechellia relies exclusively on the fruits of Morinda citrifolia, which are toxic to most insects, including its sibling species Drosophila melanogaster and Drosophila simulans. Although several odorant binding protein (Obp) genes and olfactory receptor (Or) genes have been suggested to be associated with the D. sechellia host shift, a broad view of how chemosensory genes have contributed to this shift is still lacking. We therefore studied the transcriptomes of antennae, the main organ responsible for detecting food resource and oviposition, of D. sechellia and its two sibling species. We wanted to know whether gene expression, particularly chemosensory genes, has diverged between D. sechellia and its two sibling species. Using a very stringent definition of differential gene expression, we found a higher percentage of chemosensory genes differentially expressed in the D. sechellia lineage (7.8%) than in the D. simulans lineage (5.4%); for upregulated chemosensory genes, the percentages were 8.8% in D. sechellia and 5.2% in D. simulans. Interestingly, Obp50a exhibited the highest upregulation, an approximately 100-fold increase, and Or85c-previously reported to be a larva-specific gene-showed approximately 20-fold upregulation in D. sechellia. Furthermore, Ir84a (ionotropic receptor 84a), which has been proposed to be associated with male courtship behavior, was significantly upregulated in D. sechellia. We also found expression divergence in most of the chemosensory gene families between D. sechellia and the two sibling species. Our observations suggest that the host shift of D. sechellia was associated with the enrichment of differentially expressed, particularly upregulated, chemosensory genes.ca
• dc.format.mimetype application/pdfca
• dc.identifier.citation Shiao MS, Chang JM, Fan WL, Lu MY, Notredame C, Fang S et al. Expression divergence of chemosensory genes between drosophila sechellia and its sibling species and its implications for host shift. Genome biology and evolution. 2015; 7(10): 2843-2858. DOI 10.1093/gbe/evv183ca
• dc.identifier.doi http://dx.doi.org/10.1093/gbe/evv183
• dc.identifier.issn 1759-6653
• dc.identifier.uri http://hdl.handle.net/10230/25074
• dc.language.iso engca
• dc.publisher Oxford University Pressca
• dc.relation.ispartof Genome biology and evolution. 2015; 7(10): 2843-2858
• dc.rights © The Author(s) 2015. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.ca
• dc.rights.accessRights info:eu-repo/semantics/openAccessca
• dc.rights.uri http://creativecommons.org/licenses/by-nc/4.0/ca
• dc.subject.keyword Drosophila sechellia
• dc.subject.keyword Host shift
• dc.subject.keyword Chemosensory genes
• dc.subject.keyword RNA-seq
• dc.subject.keyword Antennal transcriptome
• dc.subject.other Drosòfila -- Genèticaca
• dc.subject.other RNAca
• dc.title Expression divergence of chemosensory genes between drosophila sechellia and its sibling species and its implications for host shiftca
• dc.type info:eu-repo/semantics/articleca
• dc.type.version info:eu-repo/semantics/publishedVersionca