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    National Tsing Hua University Institutional Repository > 生命科學院  > 生命科學系 > 期刊論文 >  Reduction of germ cells in the Odysseus null mutant causes male fertility defect in Drosophila melanogaster


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81430


    Title: Reduction of germ cells in the Odysseus null mutant causes male fertility defect in Drosophila melanogaster
    Authors: Ya-Jen Cheng;Shu Fang;Shun-Chern Tsaur;Yi-Ling Chen;Hua-Wen Fu;Nipam H. Patel;Chau-Ti Ting
    教師: 傅化文
    Date: 2012
    Publisher: The Genetics Society of Japan
    Relation: Genes and Genetic Systems, The Genetics Society of Japan, Volume 87, Issue 4, AUG 2012, Pages 273-276
    Keywords: speciation
    hybrid sterility gene
    male-specific transcript
    spermatogenesis
    Abstract: Odysseus (OdsH) has been identified as a hybrid male sterility gene between Drosophila mauritiana and D. simulans with accelerated evolutionary rate in both expression and DNA sequence. Loss of a testis-specific expression of OdsH causes male fertility defect in D. melanogaster. Yet, the underlying mechanisms at the cellular level are unknown. In an attempt to identify the possible mechanisms and functional roles of OdsH in spermatogenesis, the cell numbers at different developmental stages during spermatogenesis between the OdsH null mutant and wild-type flies were compared. The results showed that the early developing germ cells, including spermatogonia and spermatocytes, were reduced in the OdsH mutant males. In addition, the number of germline stem cells in aged males was also reduced, presumably due to the disruption of germline stem cell maintenance, which resulted in more severe fertility defect. These results suggest that the function of the enhancement of sperm production by OdsH acted across males of all ages.
    Relation Link: http://gsj3.jp/eng/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81430
    Appears in Collections:[分子與細胞生物研究所] 期刊論文
    [生命科學系] 期刊論文

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