数字农科院2.0

Tudor Knockdown Disrupts Ovary Development I.n Bactrocera Dorsalis

文献类型： 外文期刊

作者： Smagghe, G.;Shang, F.;Xie, Y. -F.;Wu, Y. -B.;Xie, Y. -F.;Wang, J. -J.;Smagghe, G.;Wang, J. -J.;Shang, F.;Smagghe, G.;Wu, Y. -B.;Dou, W.;Christiaens, O.;Niu, J. -Z.;Dou, W.;Niu, J. -Z.;Wei, D.;Wei, D.;Wei, D.;Ding, B. -Y.;Ding, B. -Y.

作者机构：

关键词： oriental fruit fly; Tudor; RNAi; reproduction; ovary growth

期刊名称： INSECT MOLECULAR BIOLOGY

ISSN： 0962-1075

年卷期： 2019 年 28 卷 1 期

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摘要： One of the main functions of the piwi-interacting RNA pathway is the post-transcriptional silencing of transposable elements in the germline of many species. In insects, proteins belonging to the Tudor superfamily proteins belonging to the Tudor superfamily play an important role in to play an important role in this mechanism. In this study, we identified the tudor gene in the oriental fruit fly, Bactrocera dorsalis, investigated the spatiotemporal expressional profile of the gene, and performed a functional analysis using RNA interference. We identified one transcript for a tudor homologue in the B. dorsalis transcriptome, which encodes a protein containing the typical 10 Tudor domains and an Adenosine triphosphate (ATP) synthase delta subunit signature. Phylogenetic analysis confirmed the identity of this transcript as a tudor homologue in this species. The expression profile indicated a much higher expression in the adult and pupal stages compared to the larval stages (up to a 60-fold increase), and that the gene was mostly expressed in the ovaries, Malpighian tubules and fat body. Finally, gene knockdown of tudor in B. dorsalis led to clearly underdeveloped ovaries in the female adult and reductions in copulation rate and amount of oviposition, indicating its important role in reproduction. The results of this study shed more light on the role of tudor in ovary development and reproduction.

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