线粒体全基因组测序探寻高原环境对Artemia tibetiana和A.urmiana卤虫种线粒体基因的影响
查看参考文献80篇
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文摘
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卤虫(Artemia)属甲壳纲无背甲目,生活于高盐环境中,低海拔和高海拔地区均有分布,在适应不同环境需求的过程中形成了遗传的多样性.为研究卤虫表型的可塑性,本研究对2个来自青藏高原的A.tibetiana和1个来自伊朗乌尔米耶湖的A.urmiana的线粒体进行了全基因组测序,将获得的3个序列信息与另一低海拔平原上的卤虫种A.franciscana进行比较分析.在线粒体蛋白编码基因的序列比对中发现:A.franciscana和A.tibetiana/A.urmiana组间atp8基因的Ka/Ks值最高,而A.tibetiana和A.urmiana组间,atp6基因的Ka/Ks值最高.鉴于A.tibetiana和A.urmiana遗传距离较近,但分别分布于高海拔和低海拔,环境差异显著,提示在高原环境适应过程中atp6基因可能受到强的选择压力.在D-loop区鉴别到2个延长终止相关的序列(ETASs)和3个保守序列块(CSBs),猜测D-loop或者呼吸链亚基的序列变化,可单独或共作用促进卤虫适应不同海拔环境。 |
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来源
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中国科学. 生命科学
,2013,43(4):319-331 【核心库】
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关键词
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线粒体基因组
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Artemia tibetiana
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序列变化
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高原物种
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地址
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1.
中国科学院北京基因组研究所, 中国科学院基因组学及信息重点实验室, 北京, 101300
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Department of Genome Oriented Bioinformatics, Technische Universitat Munchen, Wissenschaftszentrum Weihenstephan, Germany, Freising, 85350
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1674-7232 |
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学科
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动物学 |
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基金
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国家自然科学基金
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国家973计划
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文献收藏号
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CSCD:4818563
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