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日本鼓虾线粒体基因组:真虾下目内部的基因重排与系统发育 被引量:2

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摘要 在日本鼓虾线粒体基因组完成的基础上,结合现有线粒体基因组数据,全面揭示了真虾类线粒体基因组的基本特征.日本鼓虾线粒体基因组全长16487bp,包含37个基因,与后生动物线粒体基因组的标准基因组成一致.4个已完成的真虾类(罗氏沼虾、日本沼虾、沼虾Macrobrachium lanchesteri和夏威夷红虾)线粒体基因组的基因排列与泛甲壳动物的原始排列完全相同,过去曾经认为在真虾下目线粒体基因组中没有基因重排现象.然而,鼓虾线粒体基因组中存在1个转运RNA基因(trnE)的易位和反转,这种基因排列方式在其他甲壳动物线粒体基因组中未见报道.同时,脊尾白虾线粒体基因组中存在1个转运RNA基因(trnP或trnT)的易位.分别统计了2种鼓虾(日本鼓虾和鲜明鼓虾)和3种沼虾(罗氏沼虾、日本沼虾和沼虾M.lanchesteri)13个蛋白质编码基因(PCGs)非同义替换与同义替换的比值(Ka/Ks),发现鼓虾和沼虾所有线粒体蛋白质编码基因的Ka/Ks均小于1,显示出强烈的纯化选择.基于线粒体基因组的系统发育分析结果,强烈支持长臂虾科和鼓虾科为单系群,并且其在科级的亲缘关系为:(长臂虾科+鼓虾科)+匙指虾科(BPM=100,BPP=100).
出处 《中国科学:生命科学》 CSCD 北大核心 2012年第7期595-602,共8页 Scientia Sinica(Vitae)
基金 国家自然科学基金(批准号:40906067和31172054) 中央财政支持地方高校发展专项基金(CXTD04) 中国博士后科学基金(批准号:2012M510054) 江苏省海洋生物技术重点实验室基金(批准号:2009HS12和2009HS13) 青蓝工程人才基金(批准号:苏教师[2010]27)资助项目
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同被引文献59

  • 1李凤鲁.中国沿海革囊星虫属(星虫动物门)的研究[J].青岛海洋大学学报(自然科学版),1989,19(3):78-90. 被引量:37
  • 2兰国宝,杨素芳,谢体三,石德顺.星虫动物门系统发生研究进展[J].广西科学,2007,14(2):186-192. 被引量:5
  • 3沙忠利,刘瑞玉.中国海鼓虾科角鼓虾属分类研究(甲壳亚门,十足目)(英文)[J].动物分类学报,2007,32(4):749-755. 被引量:1
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