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Impact of "Biological Nitrification Inhibition"on N recovery efficiency, N leaching and N2O emissions using the example of brachiaria humidicola
Authors
Jacobo Arango
Georg Cadisch
+5 more
Konrad Egenolf
Hannes Karwat
Danilo Moreta
Idupulapati M. Rao
Frank Rasche
Publication date
16 March 2015
Publisher
Abstract
以线粒体Cyt b基因为分子标记,对雅鲁藏布江下游墨脱江段及察隅河的墨脱裂腹鱼进行遗传多样性及种群历史动态分析。结果显示,167尾墨脱裂腹鱼样本共检测到21个单倍型,呈现较高的单倍型多样性(h=0.768)和较低的核苷酸多样性(π=0.00167)。基于单倍型构建的分子系统发育树及Network网络关系图表明,所有来自墨脱江段及察隅河的单倍型不能按照地理分布各自聚类,而是相互混杂聚在一起。不同地理种群间的遗传分化指数(F_(ST))为-0.014—0.771,其中金珠藏布(JZZB)与其他种群呈现出高度分化(F_(ST): 0.372—0.771)。分子方差分析(AMOVA)显示当JZZB种群为一组,剩余6个种群为一组时,组间遗传差异最大,表明JZZB种群与其他种群具有显著分化。相反,虽然察隅河与墨脱江段的地理距离较远,但是察隅河与墨脱江段其他种群之间(除了JZZB)的F_(ST)为0.093—0.169,仅显示中等分化水平,表明察隅河种群与雅鲁藏布江种群尚有少量的基因交流。中性检验、错配分析及BSP(Bayesian skyline plot)分析显示,雅鲁藏布江下游墨脱江段及察隅河的墨脱裂腹鱼种群在末次间冰期(0—0.137 Ma)发生过种群扩张现象。</p
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:342005/39983
Last time updated on 23/01/2021