สืบค้นงานวิจัย
Expression divergence of chemosensory genes between Drosophila sechellia and its sibling species and its implications for host shift
Shiao M.-S. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Expression divergence of chemosensory genes between Drosophila sechellia and its sibling species and its implications for host shift
ผู้แต่ง / หัวหน้าโครงการ (EN): Shiao M.-S.
บทคัดย่อ (EN): 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. © The Author(s) 2015.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019462280&doi=10.1093%2fgbe%2fevv183&partnerID=40&md5=307d9a69d3e0ecd3217950f5ee259151
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Morinda
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Shiao M.-S.. "Expression divergence of chemosensory genes between Drosophila sechellia and its sibling species and its implications for host shift". ไม่ระบุหน่วยงาน. ม.ป.ป.

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Expression divergence of chemosensory genes between Drosophila sechellia and its sibling species and its implications for host shift
Shiao M.-S.
มหาวิทยาลัยมหิดล
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