Veniaminova N A, Vasetskiĭ N S, Lavrechenko L A, Popov S V, Kramerov D A
Genetika. 2007 Jul;43(7):916-29.
A large-scale study of short retroposon (SINE) B1 has been conducted in the genome of rodents from most of the known families of this mammalian order. The B1 nucleotide sequences of rodents from different families exhibited a number of characteristic features including substitutions, deletions, and tandem duplications. Comparing the distribution of these features among the rodent families, the currently discussed phylogenetic relationships were tested. The results of analysis indicated (1) an early divergence of Sciuridae and related families (Aplodontidae and Gliridae) from the other rodents; (2) a possible subsequent divergence of beavers (Castoridae); (3) a monophyletic origin of the group Hystricognathi, which includes several families, such as porcupines (Hystricidae) and guinea pigs (Caviidae); (4) a possible monophyletic origin of the group formed by the remaining families, including six families of mouselike rodents (Myodonta). Various approaches to the use of short retroposons for phylogenetic studies are discussed.
对短散在重复元件（SINE）B1进行了一项大规模研究，研究对象是来自该哺乳纲中大多数已知科的啮齿动物基因组。不同科的啮齿动物的B1核苷酸序列表现出许多特征，包括替换、缺失和串联重复。通过比较这些特征在啮齿动物科之间的分布，对当前讨论的系统发育关系进行了检验。分析结果表明：（1）松鼠科及相关科（河狸科和睡鼠科）与其他啮齿动物早期分化；（2）海狸（河狸科）可能随后分化；（3）豪猪亚目（Hystricognathi）这一类群具有单系起源，该类群包括几个科，如豪猪（豪猪科）和豚鼠（豚鼠科）；（4）其余科组成的类群可能具有单系起源，其中包括六个鼠形啮齿动物科（Myodonta）。文中还讨论了使用短散在重复元件进行系统发育研究的各种方法。
