哺乳动物系统发育基因组学研究进展

哺乳动物是一类最进化并在地球上占主导地位的动物类群,重建其系统发育关系一直是分子系统学的研究热点。随着越来越多物种全基因组测序的完成,在基因组水平上探讨该类动物的系统发育关系与进化成为研究的热点。本文从全基因组序列,稀有基因组变异及染色体涂染等几个方面简要介绍了当前系统发育基因组学在现生哺乳动物分子系统学中的应用,综合已有的研究归纳整理了胎盘亚纲的总目及目间的系统发育关系,给出了胎盘动物19 个目的系统发育树。本文还分析了哺乳动物系统发育基因组学目前所面临的主要问题及未来的发展前景。

A review on the progress in mammalian phylogenomics

Mammals are a group of highly evolved animals and play a dominant role in global ecology. Mammalian systematics has been a pioneering field in current molecular systematics. With more and more genome sequencing completed, mammalian phylogeny and evolution is now driven by the force from modern comparative genomic analysis. In this paper, we reviewed an inter-ordinal mammalian phylogeny from previous studies,which are vesolved phylogenetic relationships of mammals based on whole genomic sequences,rare genomic changes,and chromosome painting. A phylogenetic tree for 19 orders was presented and some potential problems and future perspectives of phylogenomics were also addressed.