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- 저자 : Geyu Liang (검색결과 2 건)
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Yunhui Li,Minhui Zhang,Xiaobo Li,Juan Zhang,Ran Liu,Geyu Liang,Yuepu Pu,Lihong Yin 대한독성 유전단백체 학회 2015 Molecular & cellular toxicology Vol.11 No.2
Caenorhabditis elegans (C. elegans), with homologous genes and conservative spermiogenesis in mammals, has a series of advantages to illuminate and study many biological processes including reproductive toxicity. So it is a very useful model to assess environmental and ecological toxicity. Here we introduce C. elegans as an animal model and three known mammalian sperm teratogens methyl methanesulfonate, mitomycin C and cyclophosphamide as experimental materials to elucidate the efficient and reliability for the assessment of chemicals altering spermiogenesis. The results showed that, with the aid of the brood size, spermatids activation, trans-activation, sperm competition as the endpoints, the adverse effects of three teratogens on C. elegans were detected. Thus, while the data of chemicals induced spermiogenesis abnormality is incomplete, we speculated that C. elegans could be a useful animal model to explore the effects on spermiogenesis of chemicals. And we propose an increased application of C. elegans that complements other model system in the reproductive toxicity.
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Development and linkage mapping of unigene-derived microsatellite markers in <i>Brassica rapa</i> L.
Ge, Yu,Ramchiary, Nirala,Wang, Tao,Liang, Cui,Wang, Na,Wang, Zhe,Choi, Su-Ryun,Lim, Yong Pyo,Piao, Zhong Yun Japanese Society of Breeding 2011 Breeding science Vol.61 No.2
<P><I>Brassica rapa</I> plants are highly important as vegetables, sources of oilseeds and fodder crop. Here, we developed 450 unigene derived microsatellite (UGMS) markers in <I>B. rapa</I> using unigenes downloaded from the National Center for Biotechnology Information database. Of the 450 UGMS primer pairs, 428 (95.1%) produced repeatable and reliable amplifications of expected size in at least one parental line of <I>B. rapa</I>, and 70 UGMS markers gave 72 polymorphic loci between the two contrasting parental lines. Cross-species transferability analysis of these 70 polymorphic UGMS markers in five other cultivated <I>Brassica</I> species showed varying transferability rates ranging from 82.9% in <I>B. nigra</I> to 97.1% in <I>B. juncea</I> and <I>B. napus</I>, and overall 53 UGMS markers amplified targets in all five species. The <I>B. rapa</I> linkage map was constructed using the 72 UGMS polymorphic loci and 154 previously developed SSRs. The newly developed UGMS markers and linkage map in this study would help in future studies to better understand the organization and evolution of <I>Brassica</I> genomes with respect to unigenes, in addition to mapping, tagging and cloning of economically important trait QTL/gene(s) and marker-assisted breeding in <I>Brassica</I> crops.</P>
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