基于线粒体细胞色素b和12S核糖体RNA基因的完整序列对猛犸象（Mammuthus primigenius）进行的分子系统发育推断。

Molecular phylogenetic inference of the woolly mammoth Mammuthus primigenius, based on complete sequences of mitochondrial cytochrome b and 12S ribosomal RNA genes.

作者信息

Noro M, Masuda R, Dubrovo I A, Yoshida M C, Kato M

机构信息

Division of Biological Science, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan.

出版信息

J Mol Evol. 1998 Mar;46(3):314-26. doi: 10.1007/pl00006308.

DOI:10.1007/pl00006308

PMID:9493356

Abstract

Complete sequences of cytochrome b (1,137 bases) and 12S ribosomal RNA (961 bases) genes in mitochondrial DNA were successfully determined from the woolly mammoth (Mammuthus primigenius), African elephant (Loxodonta africana), and Asian elephant (Elephas maximus). From these sequence data, phylogenetic relationships among three genera were examined. Molecular phylogenetic trees reconstructed by the neighbor-joining and the maximum parsimony methods provided an identical topology both for cytochrome b and 12S rRNA genes. These results support the "Mammuthus-Loxodonta" clade, which is contrary to some previous morphological reports that Mammuthus is more closely related to Elephas than to Loxodonta.

摘要

已成功测定了猛犸象（Mammuthus primigenius）、非洲象（Loxodonta africana）和亚洲象（Elephas maximus）线粒体DNA中细胞色素b（1137个碱基）和12S核糖体RNA（961个碱基）基因的完整序列。根据这些序列数据，研究了三个属之间的系统发育关系。通过邻接法和最大简约法重建的分子系统发育树，对于细胞色素b和12S rRNA基因均提供了相同的拓扑结构。这些结果支持了“猛犸象 - 非洲象”分支，这与之前一些形态学报告相反，那些报告认为猛犸象与亚洲象的关系比与非洲象的关系更为密切。