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Expression and functional analysis of transformer-2 in Phytoseiulus persimilis and other genes potentially participating in reproductive regulation

文献类型： 外文期刊

作者： Cai, Qi;Wang, Zhenghui;Yang, Fan;Zhang, Bo;Wang, Endong;Lv, Jiale;Xu, Xuenong

作者机构：

关键词： Phytoseiidae;RNA interference;Hatching rate;Offspring sex ratio;Transcriptome analyses

期刊名称： EXPERIMENTAL AND APPLIED ACAROLOGY

ISSN： 0168-8162

年卷期： 2023 年

页码：

收录情况： SCIE（2023版）

摘要： Transformer-2 (tra-2) is an important sex-determining gene in insects. It also plays a role in the reproduction of phytoseiid mites. We performed bioinformatic analyses for the tra-2 ortholog in Phytoseiulus persimilis (termed Pptra-2), measured its expression at different stages and quantitatively identified its function in reproduction. This gene encodes 288 amino acids with a conserved RRM domain. The peak of its expression was observed in adult females, especially ca. 5 days after mating. In addition, expression is also higher in eggs than in other stages and adult males. When Pptra-2 was silenced through RNA interference with oral delivery of dsRNA, 56% of the females had their egg hatching rates decreased in the first 5 days, from ca. 100% to ca. 20%, and maintained at low levels during the rest of the oviposition period. To detect other genes functionally related to Pptra-2, transcriptome analyses were performed on day 5 after mating. We compared mRNA expressions among interfered females with significantly reduced egg hatching rate, interfered females without significant hatching rate and CK. In total 403 differential genes were identified, of which 42 functional genes involved in the regulation of female reproduction and embryonic development were screened and discussed.

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