کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2821028 1160916 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sequence divergence and expression of a transformer gene in the branchiopod crustacean, Daphnia magna
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی ژنتیک
پیش نمایش صفحه اول مقاله
Sequence divergence and expression of a transformer gene in the branchiopod crustacean, Daphnia magna
چکیده انگلیسی

Environmental decline triggers a switch in reproductive strategy of Daphnia magna from asexual to sexual reproduction; however, the molecular basis of such environmental sex determination remains largely unknown. In insects most closely related to branchiopod crustaceans, orthologs of the Drosophila transformer gene such as dipteran transformer (tra), honeybee feminizer (fem) and complementary sex determiner (csd) function as sex determining factors. Therefore, we cloned a D. magna transformer gene (dmagtra) and analyzed its expression. The predicted amino acid sequence has 380 amino acids including an arginine–serine-rich region, which is characteristic of insect orthologs of Tra. Residues 180 to 205 are highly conserved with known Tra orthologs. The domain organization of DmagTra is distinct from known Tra orthologs; moreover, dmagtra does not display any detectable sexual dimorphic differences in expression or splicing patterns. We infer from these results that dmagtra may not be responsible for sex determination in D. magna.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Genomics - Volume 95, Issue 3, March 2010, Pages 160–165
نویسندگان
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