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Transgene-based, female-specific lethality system for genetic sexing of the silkworm, Bombyx mori

文献类型： 外文期刊

作者： Tan, Anjiang 1 ; Fu, Guoliang 2 ; Jin, Li 2 ; Guo, Qiuhong 1 ; Li, Zhiqian 1 ; Niu, Baolong 4 ; Meng, Zhiqi; Morrison, 1 ;

作者机构： 1.Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Key Lab Insect Dev & Evolutionary Biol, Shanghai 200032, Peoples R China

2.Oxitec Ltd, Oxford OX14 4RX, England

3.Univ Oxford, Dept Zool, Oxford OX1 3PS, England

4.Zhejiang Acad Agr Sci, Sericulture Res Inst, Lab Entomomol Biol, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R C

关键词： Doublesex;Lepidoptera

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.205； 五年影响因子：12.291 ）

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收录情况： SCI

摘要： Transgene-based genetic sexing methods are being developed for insects of agricultural and public health importance. Male-only rearing has long been sought in sericulture because males show superior economic characteristics, such as better fitness, lower food consumption, and higher silk yield. Here we report the establishment of a transgene-based genetic sexing system for the silkworm, Bombyx mori. We developed a construct in which a positive feedback loop regulated by sex-specific alternative splicing leads to high-level expression of the tetracycline-repressible transactivator in females only. Transgenic animals show female-specific lethality during embryonic and early larval stages, leading to male-only cocoons. This transgene-based female-specific lethal system not only has wide application in sericulture, but also has great potential in lepidopteran pest control.

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