Academic Exchange

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  Hexapodium (73): Bacillus thuringiensis toxins: Mechanism of action in leps and mosquitoes

  Oct 22, 2009
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  BingZhi Forum: Regulation of Insect Diapause

  Oct 20, 2009
• Ecology Forum: Ecological Approaches to Agroecosystems Management: Integration of Basic and Applied Research

  Oct 16, 2009
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  Academic Report: The Potential of Human Male Germ Line Stem Cells

  Dr. Martin Dym’s main research interest is understanding the factors that regulate the renewal and differentiation of the spermatogonial stem cells. The overall interest of the laboratory is to understand the process of mammalian spermatogenesis with special focus on spermatogonial stem cell regulation, genetic modification, and transplantation. Dr. Dym is pursuing studies of stem cell factor and other ligands, such as leukemia inhibitory factor (LIF) and glial cell line-derived neurotrophic factor (GDNF), which may be important for spermatogonial development. In addition, he is studying gene expression in isolated type A spermatogonia and in seminiferous tubules in culture using serial anaylsis of gene expression (SAGE) and DNA array procedures in response to ligands. He has used telomerase and stem cell factor to immortalize germ cell precursors for in vitro growth.

  Oct 15, 2009
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  Academic Report: Gene regulation in aphid phenotypic plasticity

  AphidBase has been developed as the international aphid genomics database. Here will present some examples of how this genome knowledge and the associated post-genomics tools have progressed our understanding of phenotypic plasticity in aphids. Phenotypic plasticity of reproductive mode in aphids is dependent on re-programming of developmental pathways, including sensing of the input, transduction of the signal, and effect on differentiation. A transcriptomic approach has been developed to identify mRNAs that are regulated during the switch of reproductive mode in the pea aphid. In addition, we identified microRNAs in the pea aphid and showed some of them to be regulated by shortening of the photoperiod.

  Oct 14, 2009
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  BingZhi Forum: The role Anaphase-Promoting Complext in co-ordinating the meiotic divisions of mammalian eggs

  Oct 11, 2009
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  BingZhi Forum: On the origins and development of blood and cardiac stem cells

  Sep 22, 2009
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  Ecology Forum (38): Limits to sustained energy intake – some implications

  Sep 18, 2009
• Ecology Forum (38): Limits to sustained energy intake – some implications

  Sep 18, 2009
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  Hexapodium (72): 1.Concerted evolution of female and male pheromones in corn borers; 2. The nice story of the meloid beetles that mimic the pheromone of their solitary bee hosts

  Title:Concerted evolution of female and male pheromones in corn borers; The nice story of the meloid beetles that mimic the pheromone of their solitary bee hosts

  Sep 15, 2009