Mitochondrial genomes of a bandicoot and a brushtail possum confirm the monophyly of australidelphian marsupials

被引：56

作者：

Phillips, MJ ^{[1
]}

Lin, YH ^{[1
]}

Harrison, GL ^{[1
]}

Penny, D ^{[1
]}

机构：

[1] Massey Univ, Inst Mol BioSci, Palmerston North, New Zealand

来源：

PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES | 2001年 / 268卷 / 1475期

关键词：

Australidelphia; marsupial; bandicoot; Isoodon; Trichosurus; nucleotide composition bias;

D O I：

10.1098/rspb.2001.1677

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Recent molecular analyses suggest that the position of bandicoots is the major difficulty in determining the root of the tree of extant marsupials. To resolve this, we analyse mitochondrial genome sequences of a bandicoot (Isoodon macrourus) and a brushtail possum (trichosurus vulpecula) together with the wallaroo (Macropus robustus). Analyses of mitochondrial protein-coding and RNA genes strongly support the bandicoot as sister to the wallaroo and the brushtail possum. This result, combined with other recent molecular analyses, confirms the monophyly of Australidelphia (Australasian marsupials plus Dromiciops from South America). Further, RY coding was found to nullify AGCT coding nucleotide composition bias.

引用

页码：1533 / 1538

页数：6

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