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Identification and functional verification of Y-chromosome-specific gene typo-gyf in Bactrocera dorsalis

Insect Science 2024年第4期31卷 1270-1284页

作者： Peipei Liu Shuning Yu Wenping Zheng Qiuyuan Zhang Jiao Qiao Ziniu Li Zhurong Deng Hongyu Zhang National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops Hubei Hongshan LaboratoryChina-Australia Joint Research Centre for Horticultural and Urban PestsInstitute of Urban and Horticultural EntomologyCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina

genes on the Y chromosome play important roles in male sex determination and *** identification of Y-chromosome-specific genes not only provides a theoretical basis for the study of male reproductive development,but also offers genetic control targets for agricultural ***,Y-chromosome genes are rarely characterized due to their high repeatability and high heterochromatinization,especially in the oriental fruit *** this study,1011 Y-chromosome-specific candidate sequences were screened from 2 to 4 h Bactrocera dorsalis embryo datasets with the chromosome quotient method,6 of which were identified as Y-chromosome-specific sequences by polymerase chain reaction,including typo-gyf,a 19126-bp DNA sequence containing a 575-amino acid open reading *** deformation and a significant reduction in sperm number were observed after typo-gyf knockdown with RNA interference in *** typo-gyf knockout with clustered regularly interspaced palindromic repeats(CRISPR)/CRISPR-associated protein 9 in the embryonic stage,the sex ratio of the emergent adults was unbalanced,with far more females than males.A genotype analysis of these females with the Y-chromosome gene MoY revealed no sex ***-gyf knockout led to the death of XY individuals in the embryonic *** conclude that typo-gyf is an essential gene for male survival,and is also involved in testicular development and *** identification of typo-gyf and its functional verification provide insight into the roles of Y-chromosome genes in male development.

关键词： Bactrocera dorsalis spermatogenesis testis typo-gyf gene Y-specific gene

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